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Adams County Allegheny County Armstrong County Beaver County Bedford County Berks County Blair County Bradford County Bucks County Butler County Cameron County Cambria County Carbon County Centre County Clarion County Chester County Clearfield County Clinton County Columbia County Crawford County Cumberland County Dauphin County Delaware County Elk County Erie County Fayette County Forest County Franklin County Fulton County Greene County Huntingdon County Indiana County Jefferson County Juniata County Lackawanna County Lancaster County Lawrence County Lebanon County Lehigh County Luzerne County Lycoming County McKean County Mercer County Mifflin County Monroe County Montgomery County Montour County Northamton County Northumberland County Perry County Philadelphia County Pike County Potter County Schuylkill County Synder County Somerset County Sullivan County Susquehanna County Tioga County Union County Venango County Warren County Washington County Wayne County Westmoreland County Wyoming County York County
Pennsylvania counties (clickable map)

The following is a list of the sixty-seven counties of the Commonwealth of Pennsylvania in the United States of America. The city of Philadelphia is coterminous with Philadelphia County, and governmental functions have been consolidated since 1854.

Alphabetical list

County
FIPS Code
[1]
County seat
[2]
Established
[2]
Origin
Etymology
[3]
Population
[2]
Area
[2]
Map
Adams County 001 Gettysburg 1800 Parts of York County. John Adams &0000000000091292.00000091,292 &0000000000000522.000000522 sq mi
(&0000000000001352.0000001,352 km 2)
State map highlighting Adams County
Allegheny County 003 Pittsburgh 1788 Parts of Washington and Westmoreland Counties. Lenape word, of uncertain meaning, for the Allegheny River &0000000001281666.0000001,281,666 &0000000000000745.000000745 sq mi
(&0000000000001930.0000001,930 km 2)
State map highlighting Allegheny County
Armstrong County 005 Kittanning 1800 Parts of Allegheny, Lycoming, and Westmoreland Counties. John Armstrong &0000000000072392.00000072,392 &0000000000000664.000000664 sq mi
(&0000000000001720.0000001,720 km 2)
State map highlighting Armstrong County
Beaver County 007 Beaver 1800 Parts of Allegheny and Washington Counties. Beaver River &0000000000181412.000000181,412 &0000000000000444.000000444 sq mi
(&0000000000001150.0000001,150 km 2)
State map highlighting Beaver County
Bedford County 009 Bedford 1771 Parts of Cumberland County. Fort Bedford, which is named for the Duke of Bedford &0000000000049984.00000049,984 &0000000000001015.0000001,015 sq mi
(&0000000000002629.0000002,629 km 2)
State map highlighting Bedford County
Berks County 011 Reading 1752 Parts of Chester, Lancaster and Philadelphia Counties. The English county of Berkshire &0000000000373638.000000373,638 &0000000000000866.000000866 sq mi
(&0000000000002243.0000002,243 km 2)
State map highlighting Berks County
Blair County 013 Hollidaysburg 1846 Parts of Huntingdon and Bedford Counties. John Blair &0000000000129144.000000129,144 &0000000000000527.000000527 sq mi
(&0000000000001365.0000001,365 km 2)
State map highlighting Blair County
Bradford County 015 Towanda 1810 Parts of Luzerne and Lycoming Counties; originally called Ontario County, renamed as Bradford County in 1812. William Bradford &0000000000062761.00000062,761 &0000000000001161.0000001,161 sq mi
(&0000000000003007.0000003,007 km 2)
State map highlighting Bradford County
Bucks County 017 Doylestown 1682 One of the original counties at the formation of Pennsylvania The English county of Buckinghamshire &0000000000597635.000000597,635 &0000000000000622.000000622 sq mi
(&0000000000001611.0000001,611 km 2)
State map highlighting Bucks County
Butler County 019 Butler 1800 Parts of Allegheny County. General Richard Butler &0000000000174083.000000174,083 &0000000000000795.000000795 sq mi
(&0000000000002059.0000002,059 km 2)
State map highlighting Butler County
Cambria County 021 Ebensburg 1804 Parts of Somerset and Huntingdon Counties. Wales &0000000000152593.000000152,593 &0000000000000693.000000693 sq mi
(&0000000000001795.0000001,795 km 2)
State map highlighting Cambria County
Cameron County 023 Emporium 1860 Parts of Clinton, Elk, McKean, and Potter Counties. Simon Cameron &0000000000005974.0000005,974 &0000000000000399.000000399 sq mi
(&0000000000001033.0000001,033 km 2)
State map highlighting Cameron County
Carbon County 025 Jim Thorpe 1843 Parts of Monroe and Northampton Counties. Coal &0000000000058802.00000058,802 &0000000000000387.000000387 sq mi
(&0000000000001002.0000001,002 km 2)
State map highlighting Carbon County
Centre County 027 Bellefonte 1800 Parts of Lycoming, Mifflin, Northumberland, and Huntingdon Counties. Centre Furnance, owned by Samuel Miles and John Patton &0000000000135758.000000135,758 &0000000000001112.0000001,112 sq mi
(&0000000000002880.0000002,880 km 2)
State map highlighting Centre County
Chester County 029 West Chester 1682 One of the original counties at the formation of Pennsylvania. The English city of Chester in the county of Cheshire &0000000000433501.000000433,501 &0000000000000760.000000760 sq mi
(&0000000000001968.0000001,968 km 2)
State map highlighting Chester County
Clarion County 031 Clarion 1839 Parts of Venango and Armstrong Counties. Clarion River &0000000000041765.00000041,765 &0000000000000609.000000609 sq mi
(&0000000000001577.0000001,577 km 2)
State map highlighting Clarion County
Clearfield County 033 Clearfield 1804 Parts of Lycoming and Huntingdon Counties; Clearfield functioned as a part of Centre County for judiciary purposes until 1822. The cleared fields from logging in the area &0000000000083382.00000083,382 &0000000000001154.0000001,154 sq mi
(&0000000000002989.0000002,989 km 2)
State map highlighting Clearfield County
Clinton County 035 Lock Haven 1839 Parts of Lycoming and Centre Counties. DeWitt Clinton &0000000000037914.00000037,914 &0000000000000898.000000898 sq mi
(&0000000000002326.0000002,326 km 2)
State map highlighting Clinton County
Columbia County 037 Bloomsburg 1813 Parts of Northumberland and Luzerne Counties. Columbia, the first popular and poetic name for the United States &0000000000064151.00000064,151 &0000000000000490.000000490 sq mi
(&0000000000001269.0000001,269 km 2)
State map highlighting Columbia County
Crawford County 039 Meadville 1800 Parts of Allegheny County. William Crawford &0000000000090366.00000090,366 &0000000000001038.0000001,038 sq mi
(&0000000000002688.0000002,688 km 2)
State map highlighting Crawford County
Cumberland County 041 Carlisle 1750 Parts of Lancaster County. The historic English county of Cumberland &0000000000213674.000000213,674 &0000000000000551.000000551 sq mi
(&0000000000001427.0000001,427 km 2)
State map highlighting Cumberland County
Dauphin County 043 Harrisburg 1785 Parts of Lancaster County. The Dauphin &0000000000251798.000000251,798 &0000000000000558.000000558 sq mi
(&0000000000001445.0000001,445 km 2)
State map highlighting Dauphin County
Delaware County 045 Media 1789 Parts of Chester County. Delaware River &0000000000550864.000000550,864 &0000000000000191.000000191 sq mi
(&0000000000000495.000000495 km 2)
State map highlighting Delaware County
Elk County 047 Ridgway 1843 Parts of Jefferson, McKean, and Clearfield Counties. Elk &0000000000035112.00000035,112 &0000000000000832.000000832 sq mi
(&0000000000002155.0000002,155 km 2)
State map highlighting Elk County
Erie County 049 Erie 1800 Parts of Allegheny County; attached to Crawford County until 1803. Lake Erie &0000000000280843.000000280,843 &0000000000000802.000000802 sq mi
(&0000000000002077.0000002,077 km 2)
State map highlighting Erie County
Fayette County 051 Uniontown 1783 Parts of Westmoreland County. The Marquis de Lafayette &0000000000148644.000000148,644 &0000000000000798.000000798 sq mi
(&0000000000002067.0000002,067 km 2)
State map highlighting Fayette County
Forest County 053 Tionesta 1848 Parts of Jefferson County; attached to Jefferson County until 1857. Chief natural feature &0000000000004946.0000004,946 &0000000000000431.000000431 sq mi
(&0000000000001116.0000001,116 km 2)
State map highlighting Forest County
Franklin County 055 Chambersburg 1784 Parts of Cumberland County. Benjamin Franklin &0000000000129313.000000129,313 &0000000000000771.000000771 sq mi
(&0000000000001997.0000001,997 km 2)
State map highlighting Franklin County
Fulton County 057 McConnellsburg 1850 Parts of Bedford County. Robert Fulton &0000000000014261.00000014,261 &0000000000000438.000000438 sq mi
(&0000000000001134.0000001,134 km 2)
State map highlighting Fulton County
Greene County 059 Waynesburg 1796 Parts of Washington County. General Nathanael Greene &0000000000040672.00000040,672 &0000000000000578.000000578 sq mi
(&0000000000001497.0000001,497 km 2)
State map highlighting Greene County
Huntingdon County 061 Huntingdon 1787 Parts of Bedford County. Possibly the historic English county of Huntingdonshire &0000000000045586.00000045,586 &0000000000000889.000000889 sq mi
(&0000000000002302.0000002,302 km 2)
State map highlighting Huntingdon County
Indiana County 063 Indiana 1803 Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806. Native Americans &0000000000089605.00000089,605 &0000000000000834.000000834 sq mi
(&0000000000002160.0000002,160 km 2)
State map highlighting Indiana County
Jefferson County 065 Brookville 1804 Parts of Lycoming County. Attached to Westmoreland County until 1806 and to Indiana County until 1830. Thomas Jefferson &0000000000045932.00000045,932 &0000000000000657.000000657 sq mi
(&0000000000001702.0000001,702 km 2)
State map highlighting Jefferson County
Juniata County 067 Mifflintown 1831 Parts of Mifflin County. Juniata River &0000000000022821.00000022,821 &0000000000000394.000000394 sq mi
(&0000000000001020.0000001,020 km 2)
State map highlighting Juniata County
Lackawanna County 069 Scranton 1878 Parts of Luzerne County. Lackawanna River &0000000000213295.000000213,295 &0000000000000465.000000465 sq mi
(&0000000000001204.0000001,204 km 2)
State map highlighting Lackawanna County
Lancaster County 071 Lancaster 1729 Parts of Chester County. The English city of Lancaster &0000000000470658.000000470,658 &0000000000000984.000000984 sq mi
(&0000000000002549.0000002,549 km 2)
State map highlighting Lancaster County
Lawrence County 073 New Castle 1849 Parts of Beaver and Mercer Counties. The USS Lawrence &0000000000094643.00000094,643 &0000000000000363.000000363 sq mi
(&0000000000000940.000000940 km 2)
State map highlighting Lawrence County
Lebanon County 075 Lebanon 1813 Parts of Dauphin and Lancaster Counties. Lebanon Township; Lebanon is a Biblical term meaning White Mountain &0000000000120327.000000120,327 &0000000000000363.000000363 sq mi
(&0000000000000940.000000940 km 2)
State map highlighting Lebanon County
Lehigh County 077 Allentown 1812 Parts of Northampton County. Lehigh River &0000000000312090.000000312,090 &0000000000000349.000000349 sq mi
(&0000000000000904.000000904 km 2)
State map highlighting Lehigh County
Luzerne County 079 Wilkes-Barre 1786 Parts of Northumberland County. The Chevalier de Luzerne &0000000000319250.000000319,250 &0000000000000907.000000907 sq mi
(&0000000000002349.0000002,349 km 2)
State map highlighting Luzerne County
Lycoming County 081 Williamsport 1795 Parts of Northumberland County. Lycoming Creek &0000000000120044.000000120,044 &0000000000001244.0000001,244 sq mi
(&0000000000003222.0000003,222 km 2)
State map highlighting Lycoming County
McKean County 083 Smethport 1804 Parts of Lycoming County; Attached to Centre County until 1814 and to Lycoming County until 1826 for judicial and elective purposes. McKean was fully organized only in 1826. Thomas McKean &0000000000045936.00000045,936 &0000000000000984.000000984 sq mi
(&0000000000002549.0000002,549 km 2)
State map highlighting McKean County
Mercer County 085 Mercer 1800 Parts of Allegheny County. Hugh Mercer &0000000000120293.000000120,293 &0000000000000683.000000683 sq mi
(&0000000000001769.0000001,769 km 2)
State map highlighting Mercer County
Mifflin County 087 Lewistown 1789 Parts of Cumberland and Northumberland Counties. Thomas Mifflin &0000000000046486.00000046,486 &0000000000000415.000000415 sq mi
(&0000000000001075.0000001,075 km 2)
State map highlighting Mifflin County
Monroe County 089 Stroudsburg 1836 Parts of Pike and Northampton Counties. James Monroe &0000000000138687.000000138,687 &0000000000000617.000000617 sq mi
(&0000000000001598.0000001,598 km 2)
State map highlighting Monroe County
Montgomery County 091 Norristown 1784 Parts of Philadelphia County. Uncertain; possibly either Richard Montgomery or the historic Welsh county of Montgomeryshire &0000000000750097.000000750,097 &0000000000000487.000000487 sq mi
(&0000000000001261.0000001,261 km 2)
State map highlighting Montgomery County
Montour County 093 Danville 1850 Parts of Columbia County. Madame Montour &0000000000018236.00000018,236 &0000000000000132.000000132 sq mi
(&0000000000000342.000000342 km 2)
State map highlighting Montour County
Northampton County 095 Easton 1752 Parts of Bucks County. The English city of Northampton &0000000000267066.000000267,066 &0000000000000377.000000377 sq mi
(&0000000000000976.000000976 km 2)
State map highlighting Northampton County
Northumberland County 097 Sunbury 1772 Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties. The English county of Northumberland &0000000000094556.00000094,556 &0000000000000477.000000477 sq mi
(&0000000000001235.0000001,235 km 2)
State map highlighting Northumberland County
Perry County 099 New Bloomfield 1820 Parts of Cumberland County. Oliver Hazard Perry &0000000000043602.00000043,602 &0000000000000556.000000556 sq mi
(&0000000000001440.0000001,440 km 2)
State map highlighting Perry County
Philadelphia County 101 Philadelphia 1682 One of the original counties at the formation of Pennsylvania. The city and county of Philadelphia were combined in 1854 and city and county offices merged in 1952. "Brotherly love" from Greek philos ("love") and adelphos ("brother") &0000000001517550.0000001,517,550 &0000000000000143.000000143 sq mi
(&0000000000000370.000000370 km 2)
State map highlighting Philadelphia County
Pike County 103 Milford 1814 Parts of Wayne County. Zebulon Pike &0000000000046302.00000046,302 &0000000000000567.000000567 sq mi
(&0000000000001469.0000001,469 km 2)
State map highlighting Pike County
Potter County 105 Coudersport 1804 From Lycoming county. Attached to Lycoming County until 1826 and to McKean County until 1835 for judicial purposes, Potter was not fully organized until 1835. James Potter &0000000000018080.00000018,080 &0000000000001081.0000001,081 sq mi
(&0000000000002800.0000002,800 km 2)
State map highlighting Potter County
Schuylkill County 107 Pottsville 1811 Parts of Berks and Northampton Counties. Schuylkill River &0000000000150336.000000150,336 &0000000000000778.000000778 sq mi
(&0000000000002015.0000002,015 km 2)
State map highlighting Schuylkill County
Snyder County 109 Middleburg 1855 Parts of Union County. Simon Snyder &0000000000037546.00000037,546 &0000000000000332.000000332 sq mi
(&0000000000000860.000000860 km 2)
State map highlighting Snyder County
Somerset County 111 Somerset 1795 Parts of Bedford County. The English county of Somerset &0000000000080023.00000080,023 &0000000000001081.0000001,081 sq mi
(&0000000000002800.0000002,800 km 2)
State map highlighting Somerset County
Sullivan County 113 Laporte 1847 Parts of Lycoming County; attached to Lycoming until 1848. John Sullivan &0000000000006556.0000006,556 &0000000000000452.000000452 sq mi
(&0000000000001171.0000001,171 km 2)
State map highlighting Sullivan County
Susquehanna County 115 Montrose 1810 Parts of Luzerne County ; attached to Luzerne County until 1812. Susquehanna River &0000000000042238.00000042,238 &0000000000000832.000000832 sq mi
(&0000000000002155.0000002,155 km 2)
State map highlighting Susquehanna County
Tioga County 117 Wellsboro 1804 Parts of Lycoming County; attached to Lycoming until 1812. Tioga River &0000000000041373.00000041,373 &0000000000001137.0000001,137 sq mi
(&0000000000002945.0000002,945 km 2)
State map highlighting Tioga County
Union County 119 Lewisburg 1813 Parts of Northumberland County. The Federal union of the United States &0000000000041624.00000041,624 &0000000000000317.000000317 sq mi
(&0000000000000821.000000821 km 2)
State map highlighting Union County
Venango County 121 Franklin 1800 Parts of Allegheny and Lycoming Counties; attached to until 1805. A corruption of the Native word "onenge", meaning "otter" &0000000000057565.00000057,565 &0000000000000683.000000683 sq mi
(&0000000000001769.0000001,769 km 2)
State map highlighting Venango County
Warren County 123 Warren 1800 Parts of Allegheny and Lycoming counties; attached to Crawford County until 1805 and then to Venango until Warren was formally organized in 1819. General Joseph Warren &0000000000043863.00000043,863 &0000000000000898.000000898 sq mi
(&0000000000002326.0000002,326 km 2)
State map highlighting Warren County
Washington County 125 Washington 1781 Parts of Westmoreland County. George Washington &0000000000202897.000000202,897 &0000000000000861.000000861 sq mi
(&0000000000002230.0000002,230 km 2)
State map highlighting Washington County
Wayne County 127 Honesdale 1798 Parts of Northampton County. Anthony Wayne &0000000000047722.00000047,722 &0000000000000751.000000751 sq mi
(&0000000000001945.0000001,945 km 2)
State map highlighting Wayne County
Westmoreland County 129 Greensburg 1773 Parts of Bedford County. Possibly the historic English county of Westmorland &0000000000369993.000000369,993 &0000000000001036.0000001,036 sq mi
(&0000000000002683.0000002,683 km 2)
State map highlighting Westmoreland County
Wyoming County 131 Tunkhannock 1842 Parts of Luzerne County. The Delaware word xwé:wamənk, meaning "at the big river flat" &0000000000028080.00000028,080 &0000000000000405.000000405 sq mi
(&0000000000001049.0000001,049 km 2)
State map highlighting Wyoming County
York County 133 York 1749 Parts of Lancaster County. The English city of York &0000000000381751.000000381,751 &0000000000000910.000000910 sq mi
(&0000000000002357.0000002,357 km 2)
State map highlighting York County

See also

Pennsylvania counties by per capita income arranged in order from richest to poorest

References

  1. ^ "EPA County FIPS Code Listing". EPA.gov. http://www.epa.gov/enviro/html/codes/pa.html. Retrieved 2008-02-23.  
  2. ^ a b c d National Association of Counties. "NACo - Find a county". http://www.naco.org/Template.cfm?Section=Find_a_County&Template=/cffiles/counties/state.cfm&state.cfm&statecode=PA. Retrieved 2008-04-30.  
  3. ^ "Pennsylvania Counties". Pennsylvania State Archives. http://www.phmc.state.pa.us/bah/dam/counties/county.asp?secid=31. Retrieved September 14, 2009.  
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Pennsylvania counties

The following is a list of the sixty-seven counties of the Commonwealth of Pennsylvania in the United States of America. The city of Philadelphia is coterminous with Philadelphia County, and governmental functions have been consolidated since 1854.

Alphabetical list

County
FIPS Code[1] County Seat
Created
Origin
Etymology
Population
Area
Map
 
Adams County 001 Gettysburg 1800 Parts of York County. John Adams &&&&&&&&&&091292.&&&&&091,292 &&&&&&&&&&&&0522.&&&&&0522 sq mi
(&&&&&&&&&&&01352.&&&&&01,352 km²)
State map highlighting Adams County
Allegheny County 003 Pittsburgh 1788 Parts of Washington and Westmoreland Counties. &&&&&&&&01281666.&&&&&01,281,666 &&&&&&&&&&&&0745.&&&&&0745 sq mi
(&&&&&&&&&&&01930.&&&&&01,930 km²)
State map highlighting Allegheny County
Armstrong County 005 Kittanning 1800 Parts of Allegheny, Lycoming, and Westmoreland Counties. John Armstrong &&&&&&&&&&072392.&&&&&072,392 &&&&&&&&&&&&0664.&&&&&0664 sq mi
(&&&&&&&&&&&01720.&&&&&01,720 km²)
State map highlighting Armstrong County
Beaver County 007 Beaver 1800 Parts of Allegheny and Washington Counties. &&&&&&&&&0181412.&&&&&0181,412 &&&&&&&&&&&&0444.&&&&&0444 sq mi
(&&&&&&&&&&&01150.&&&&&01,150 km²)
State map highlighting Beaver County
Bedford County 009 Bedford 1771 Parts of Cumberland County. Fort Bedford, which is named for the Duke of Bedford &&&&&&&&&&049984.&&&&&049,984 &&&&&&&&&&&01015.&&&&&01,015 sq mi
(&&&&&&&&&&&02629.&&&&&02,629 km²)
State map highlighting Bedford County
Berks County 011 Reading 1752 Parts of Chester, Lancaster and Philadelphia Counties. The English county of Berkshire &&&&&&&&&0373638.&&&&&0373,638 &&&&&&&&&&&&0866.&&&&&0866 sq mi
(&&&&&&&&&&&02243.&&&&&02,243 km²)
State map highlighting Berks County
Blair County 013 Hollidaysburg 1846 Parts of Huntingdon and Bedford Counties. &&&&&&&&&0129144.&&&&&0129,144 &&&&&&&&&&&&0527.&&&&&0527 sq mi
(&&&&&&&&&&&01365.&&&&&01,365 km²)
State map highlighting Blair County
Bradford County 015 Towanda 1810 Parts of Luzerne and Lycoming Counties; originally called Ontario County, renamed as Bradford County in 1812. William Bradford &&&&&&&&&&062761.&&&&&062,761 &&&&&&&&&&&01161.&&&&&01,161 sq mi
(&&&&&&&&&&&03007.&&&&&03,007 km²)
State map highlighting Bradford County
Bucks County 017 Doylestown 1682 One of the original counties at the formation of Pennsylvania The English county of Buckinghamshire &&&&&&&&&0597635.&&&&&0597,635 &&&&&&&&&&&&0622.&&&&&0622 sq mi
(&&&&&&&&&&&01611.&&&&&01,611 km²)
State map highlighting Bucks County
Butler County 019 Butler 1800 Parts of Allegheny County. General Richard Butler &&&&&&&&&0174083.&&&&&0174,083 &&&&&&&&&&&&0795.&&&&&0795 sq mi
(&&&&&&&&&&&02059.&&&&&02,059 km²)
State map highlighting Butler County
Cambria County 021 Ebensburg 1804 Parts of Somerset and Huntingdon Counties. Wales &&&&&&&&&0152593.&&&&&0152,593 &&&&&&&&&&&&0693.&&&&&0693 sq mi
(&&&&&&&&&&&01795.&&&&&01,795 km²)
State map highlighting Cambria County
Cameron County 023 Emporium 1860 Parts of Clinton, Elk, McKean, and Potter Counties. Simon Cameron &&&&&&&&&&&05974.&&&&&05,974 &&&&&&&&&&&&0399.&&&&&0399 sq mi
(&&&&&&&&&&&01033.&&&&&01,033 km²)
State map highlighting Cameron County
Carbon County 025 Jim Thorpe 1843 Parts of Monroe and Northampton Counties. Coal &&&&&&&&&&058802.&&&&&058,802 &&&&&&&&&&&&0387.&&&&&0387 sq mi
(&&&&&&&&&&&01002.&&&&&01,002 km²)
State map highlighting Carbon County
Centre County 027 Bellefonte 1800 Parts of Lycoming, Mifflin, Northumberland, and Huntingdon Counties. &&&&&&&&&0135758.&&&&&0135,758 &&&&&&&&&&&01112.&&&&&01,112 sq mi
(&&&&&&&&&&&02880.&&&&&02,880 km²)
State map highlighting Centre County
Chester County 029 West Chester 1682 One of the original counties at the formation of Pennsylvania. The English county of Cheshire &&&&&&&&&0433501.&&&&&0433,501 &&&&&&&&&&&&0760.&&&&&0760 sq mi
(&&&&&&&&&&&01968.&&&&&01,968 km²)
State map highlighting Chester County
Clarion County 031 Clarion 1839 Parts of Venango and Armstrong Counties. &&&&&&&&&&041765.&&&&&041,765 &&&&&&&&&&&&0609.&&&&&0609 sq mi
(&&&&&&&&&&&01577.&&&&&01,577 km²)
State map highlighting Clarion County
Clearfield County 033 Clearfield 1804 Parts of Lycoming and Huntingdon Counties; Clearfield functioned as a part of Centre County for judiciary purposes until 1822. The cleared fields from logging in the area &&&&&&&&&&083382.&&&&&083,382 &&&&&&&&&&&01154.&&&&&01,154 sq mi
(&&&&&&&&&&&02989.&&&&&02,989 km²)
State map highlighting Clearfield County
Clinton County 035 Lock Haven 1839 Parts of Lycoming and Centre Counties. DeWitt Clinton &&&&&&&&&&037914.&&&&&037,914 &&&&&&&&&&&&0898.&&&&&0898 sq mi
(&&&&&&&&&&&02326.&&&&&02,326 km²)
State map highlighting Clinton County
Columbia County 037 Bloomsburg 1813 Parts of Northumberland and Luzerne Counties. Columbia, the first popular and poetic name for the United States &&&&&&&&&&064151.&&&&&064,151 &&&&&&&&&&&&0490.&&&&&0490 sq mi
(&&&&&&&&&&&01269.&&&&&01,269 km²)
State map highlighting Columbia County
Crawford County 039 Meadville 1800 Parts of Allegheny County. William Crawford &&&&&&&&&&090366.&&&&&090,366 &&&&&&&&&&&01038.&&&&&01,038 sq mi
(&&&&&&&&&&&02688.&&&&&02,688 km²)
State map highlighting Crawford County
Cumberland County 041 Carlisle 1750 Parts of Lancaster County. &&&&&&&&&0213674.&&&&&0213,674 &&&&&&&&&&&&0551.&&&&&0551 sq mi
(&&&&&&&&&&&01427.&&&&&01,427 km²)
State map highlighting Cumberland County
Dauphin County 043 Harrisburg 1785 Parts of Lancaster County. The Dauphin &&&&&&&&&0251798.&&&&&0251,798 &&&&&&&&&&&&0558.&&&&&0558 sq mi
(&&&&&&&&&&&01445.&&&&&01,445 km²)
State map highlighting Dauphin County
Delaware County 045 Media 1789 Parts of Chester County. The Delaware River &&&&&&&&&0550864.&&&&&0550,864 &&&&&&&&&&&&0191.&&&&&0191 sq mi
(&&&&&&&&&&&&0495.&&&&&0495 km²)
State map highlighting Delaware County
Elk County 047 Ridgway 1843 Parts of Jefferson, McKean, and Clearfield Counties. Elk &&&&&&&&&&035112.&&&&&035,112 &&&&&&&&&&&&0832.&&&&&0832 sq mi
(&&&&&&&&&&&02155.&&&&&02,155 km²)
State map highlighting Elk County
Erie County 049 Erie 1800 Parts of Allegheny County; attached to Crawford County until 1803. Lake Erie &&&&&&&&&0280843.&&&&&0280,843 &&&&&&&&&&&01558.&&&&&01,558 sq mi
(&&&&&&&&&&&04035.&&&&&04,035 km²)
State map highlighting Erie County
Fayette County 051 Uniontown 1783 Parts of Westmoreland County. The Marquis de Lafayette &&&&&&&&&0148644.&&&&&0148,644 &&&&&&&&&&&&0798.&&&&&0798 sq mi
(&&&&&&&&&&&02067.&&&&&02,067 km²)
State map highlighting Fayette County
Forest County 053 Tionesta 1848 Parts of Jefferson County; attached to Jefferson County until 1857. &&&&&&&&&&&04946.&&&&&04,946 &&&&&&&&&&&&0431.&&&&&0431 sq mi
(&&&&&&&&&&&01116.&&&&&01,116 km²)
State map highlighting Forest County
Franklin County 055 Chambersburg 1784 Parts of Cumberland County. Benjamin Franklin &&&&&&&&&0129313.&&&&&0129,313 &&&&&&&&&&&&0771.&&&&&0771 sq mi
(&&&&&&&&&&&01997.&&&&&01,997 km²)
State map highlighting Franklin County
Fulton County 057 McConnellsburg 1850 Parts of Bedford County. Robert Fulton &&&&&&&&&&014261.&&&&&014,261 &&&&&&&&&&&&0438.&&&&&0438 sq mi
(&&&&&&&&&&&01134.&&&&&01,134 km²)
State map highlighting Fulton County
Greene County 059 Waynesburg 1796 Parts of Washington County. General Nathanael Greene &&&&&&&&&&040672.&&&&&040,672 &&&&&&&&&&&&0578.&&&&&0578 sq mi
(&&&&&&&&&&&01497.&&&&&01,497 km²)
State map highlighting Greene County
Huntingdon County 061 Huntingdon 1787 Parts of Bedford County. &&&&&&&&&&045586.&&&&&045,586 &&&&&&&&&&&&0889.&&&&&0889 sq mi
(&&&&&&&&&&&02302.&&&&&02,302 km²)
State map highlighting Huntingdon County
Indiana County 063 Indiana 1803 Parts of Lycoming and Westmoreland Counties; it was attached to Westmoreland County until 1806. &&&&&&&&&&089605.&&&&&089,605 &&&&&&&&&&&&0834.&&&&&0834 sq mi
(&&&&&&&&&&&02160.&&&&&02,160 km²)
State map highlighting Indiana County
Jefferson County 065 Brookville 1804 Parts of Lycoming County. Attached to Westmoreland County until 1806 and to Indiana County until 1830. Thomas Jefferson &&&&&&&&&&045932.&&&&&045,932 &&&&&&&&&&&&0657.&&&&&0657 sq mi
(&&&&&&&&&&&01702.&&&&&01,702 km²)
State map highlighting Jefferson County
Juniata County 067 Mifflintown 1831 Parts of Mifflin County. The Juniata River &&&&&&&&&&022821.&&&&&022,821 &&&&&&&&&&&&0394.&&&&&0394 sq mi
(&&&&&&&&&&&01020.&&&&&01,020 km²)
State map highlighting Juniata County
Lackawanna County 069 Scranton 1878 Parts of Luzerne County. The Lackawanna River &&&&&&&&&0213295.&&&&&0213,295 &&&&&&&&&&&&0465.&&&&&0465 sq mi
(&&&&&&&&&&&01204.&&&&&01,204 km²)
State map highlighting Lackawanna County
Lancaster County 071 Lancaster 1729 Parts of Chester County. The English city of Lancaster &&&&&&&&&0470658.&&&&&0470,658 &&&&&&&&&&&&0984.&&&&&0984 sq mi
(&&&&&&&&&&&02549.&&&&&02,549 km²)
State map highlighting Lancaster County
Lawrence County 073 New Castle 1849 Parts of Beaver and Mercer Counties. The USS Lawrence &&&&&&&&&0213295.&&&&&0213,295 &&&&&&&&&&&&0363.&&&&&0363 sq mi
(&&&&&&&&&&&&0940.&&&&&0940 km²)
State map highlighting Lawrence County
Lebanon County 075 Lebanon 1813 Parts of Dauphin and Lancaster Counties. &&&&&&&&&0120327.&&&&&0120,327 &&&&&&&&&&&&0363.&&&&&0363 sq mi
(&&&&&&&&&&&&0940.&&&&&0940 km²)
State map highlighting Lebanon County
Lehigh County 077 Allentown 1812 Parts of Northampton County. The Lehigh River &&&&&&&&&0312090.&&&&&0312,090 &&&&&&&&&&&&0349.&&&&&0349 sq mi
(&&&&&&&&&&&&0904.&&&&&0904 km²)
State map highlighting Lehigh County
Luzerne County 079 Wilkes-Barre 1786 Parts of Northumberland County. The Chevalier de Luzerne &&&&&&&&&0319250.&&&&&0319,250 &&&&&&&&&&&&0907.&&&&&0907 sq mi
(&&&&&&&&&&&02349.&&&&&02,349 km²)
State map highlighting Luzerne County
Lycoming County 081 Williamsport 1795 Parts of Northumberland County. Lycoming Creek &&&&&&&&&0120044.&&&&&0120,044 &&&&&&&&&&&01244.&&&&&01,244 sq mi
(&&&&&&&&&&&03222.&&&&&03,222 km²)
State map highlighting Lycoming County
McKean County 083 Smethport 1804 Parts of Lycoming County; Attached to Centre County until 1814 and to Lycoming County until 1826 for judicial and elective purposes. McKean was fully organized only in 1826. Michael McKean &&&&&&&&&&045936.&&&&&045,936 &&&&&&&&&&&&0984.&&&&&0984 sq mi
(&&&&&&&&&&&02549.&&&&&02,549 km²)
State map highlighting McKean County
Mercer County 085 Mercer 1800 Parts of Allegheny County. Hugh Mercer &&&&&&&&&0120293.&&&&&0120,293 &&&&&&&&&&&&0683.&&&&&0683 sq mi
(&&&&&&&&&&&01769.&&&&&01,769 km²)
State map highlighting Mercer County
Mifflin County 087 Lewistown 1789 Parts of Cumberland and Northumberland Counties. Thomas Mifflin &&&&&&&&&&046486.&&&&&046,486 &&&&&&&&&&&&0415.&&&&&0415 sq mi
(&&&&&&&&&&&01075.&&&&&01,075 km²)
State map highlighting Mifflin County
Monroe County 089 Stroudsburg 1836 Parts of Pike and Northampton Counties. James Monroe &&&&&&&&&0138687.&&&&&0138,687 &&&&&&&&&&&&0617.&&&&&0617 sq mi
(&&&&&&&&&&&01598.&&&&&01,598 km²)
State map highlighting Monroe County
Montgomery County 091 Norristown 1784 Parts of Philadelphia County. Uncertain; possibly either Richard Montgomery or the Welsh county of Montgomeryshire &&&&&&&&&0750097.&&&&&0750,097 &&&&&&&&&&&&0487.&&&&&0487 sq mi
(&&&&&&&&&&&01261.&&&&&01,261 km²)
State map highlighting Montgomery County
Montour County 093 Danville 1850 Parts of Columbia County. Madame Montour &&&&&&&&&&018236.&&&&&018,236 &&&&&&&&&&&&0132.&&&&&0132 sq mi
(&&&&&&&&&&&&0342.&&&&&0342 km²)
State map highlighting Montour County
Northampton County 095 Easton 1752 Parts of Bucks County. The English city of Northampton &&&&&&&&&0267066.&&&&&0267,066 &&&&&&&&&&&&0377.&&&&&0377 sq mi
(&&&&&&&&&&&&0976.&&&&&0976 km²)
State map highlighting Northampton County
Northumberland County 097 Sunbury 1772 Parts of Lancaster, Berks, Bedford, Cumberland, and Northampton Counties. The English county of Northumberland &&&&&&&&&&094556.&&&&&094,556 &&&&&&&&&&&&0477.&&&&&0477 sq mi
(&&&&&&&&&&&01235.&&&&&01,235 km²)
State map highlighting Northumberland County
Perry County 099 New Bloomfield 1820 Parts of Cumberland County. Oliver Hazard Perry &&&&&&&&&&043602.&&&&&043,602 &&&&&&&&&&&&0556.&&&&&0556 sq mi
(&&&&&&&&&&&01440.&&&&&01,440 km²)
State map highlighting Perry County
Philadelphia County 101 Philadelphia 1682 One of the original counties at the formation of Pennsylvania. The city and county of Philadelphia were combined in 1854 and city and county offices merged in 1952. "Brotherly love" from Greek philos ("love") and adelphos ("brother") &&&&&&&&01517550.&&&&&01,517,550 &&&&&&&&&&&&0143.&&&&&0143 sq mi
(&&&&&&&&&&&&0370.&&&&&0370 km²)
State map highlighting Philadelphia County
Pike County 103 Milford 1814 Parts of Wayne County. Zebulon Pike &&&&&&&&&&046302.&&&&&046,302 &&&&&&&&&&&&0567.&&&&&0567 sq mi
(&&&&&&&&&&&01469.&&&&&01,469 km²)
State map highlighting Pike County
Potter County 105 Coudersport 1804 From Lycoming county. Attached to Lycoming County until 1826 and to McKean County until 1835 for judicial purposes, Potter was not fully organized until 1835. James Potter &&&&&&&&&&018080.&&&&&018,080 &&&&&&&&&&&01081.&&&&&01,081 sq mi
(&&&&&&&&&&&02800.&&&&&02,800 km²)
State map highlighting Potter County
Schuylkill County 107 Pottsville 1811 Parts of Berks and Northampton Counties. The Schuylkill River &&&&&&&&&0150336.&&&&&0150,336 &&&&&&&&&&&&0778.&&&&&0778 sq mi
(&&&&&&&&&&&02015.&&&&&02,015 km²)
State map highlighting Schuylkill County
Snyder County 109 Middleburg 1855 Parts of Union County. Simon Snyder &&&&&&&&&&037546.&&&&&037,546 &&&&&&&&&&&&0332.&&&&&0332 sq mi
(&&&&&&&&&&&&0860.&&&&&0860 km²)
State map highlighting Snyder County
Somerset County 111 Somerset 1795 Parts of Bedford County. The English county of Somerset &&&&&&&&&&080023.&&&&&080,023 &&&&&&&&&&&01081.&&&&&01,081 sq mi
(&&&&&&&&&&&02800.&&&&&02,800 km²)
State map highlighting Somerset County
Sullivan County 113 Laporte 1847 Parts of Lycoming County; attached to Lycoming until 1848. John Sullivan &&&&&&&&&&&06556.&&&&&06,556 &&&&&&&&&&&&0452.&&&&&0452 sq mi
(&&&&&&&&&&&01171.&&&&&01,171 km²)
State map highlighting Sullivan County
Susquehanna County 115 Montrose 1810 Parts of Luzerne County ; attached to Luzerne County until 1812. The Susquehanna River &&&&&&&&&&042238.&&&&&042,238 &&&&&&&&&&&&0832.&&&&&0832 sq mi
(&&&&&&&&&&&02155.&&&&&02,155 km²)
State map highlighting Susquehanna County
Tioga County 117 Wellsboro 1804 Parts of Lycoming County; attached to Lycoming until 1812. The Tioga River &&&&&&&&&&041373.&&&&&041,373 &&&&&&&&&&&01137.&&&&&01,137 sq mi
(&&&&&&&&&&&02945.&&&&&02,945 km²)
State map highlighting Tioga County
Union County 119 Lewisburg 1813 Parts of Northumberland County. The Federal union of the United States &&&&&&&&&&041624.&&&&&041,624 &&&&&&&&&&&&0317.&&&&&0317 sq mi
(&&&&&&&&&&&&0821.&&&&&0821 km²)
State map highlighting Union County
Venango County 121 Franklin 1800 Parts of Allegheny and Lycoming Counties; attached to until 1805. A corruption of the Native word "onange", meaning "otter" &&&&&&&&&&057565.&&&&&057,565 &&&&&&&&&&&&0683.&&&&&0683 sq mi
(&&&&&&&&&&&01769.&&&&&01,769 km²)
State map highlighting Venango County
Warren County 123 Warren 1800 Parts of Allegheny and Lycoming counties; attached to Crawford County until 1805 and then to Venango until Warren was formally organized in 1819. General Joseph Warren &&&&&&&&&&043863.&&&&&043,863 &&&&&&&&&&&&0898.&&&&&0898 sq mi
(&&&&&&&&&&&02326.&&&&&02,326 km²)
State map highlighting Warren County
Washington County 125 Washington 1781 Parts of Westmoreland County. George Washington &&&&&&&&&0202897.&&&&&0202,897 &&&&&&&&&&&&0861.&&&&&0861 sq mi
(&&&&&&&&&&&02230.&&&&&02,230 km²)
State map highlighting Washington County
Wayne County 127 Honesdale 1798 Parts of Northampton County. Anthony Wayne &&&&&&&&&&047722.&&&&&047,722 &&&&&&&&&&&&0751.&&&&&0751 sq mi
(&&&&&&&&&&&01945.&&&&&01,945 km²)
State map highlighting Wayne County
Westmoreland County 129 Greensburg 1773 Parts of Bedford County. Possibly the English county of Westmorland &&&&&&&&&0369993.&&&&&0369,993 &&&&&&&&&&&01036.&&&&&01,036 sq mi
(&&&&&&&&&&&02683.&&&&&02,683 km²)
State map highlighting Westmoreland County
Wyoming County 131 Tunkhannock 1842 Parts of Luzerne County. The Delaware word xwé:wamənk, meaning "at the big river flat" &&&&&&&&&&028080.&&&&&028,080 &&&&&&&&&&&&0405.&&&&&0405 sq mi
(&&&&&&&&&&&01049.&&&&&01,049 km²)
State map highlighting Wyoming County
York County 133 York 1749 Parts of Lancaster County. The English city of York &&&&&&&&&0381751.&&&&&0381,751 &&&&&&&&&&&&0910.&&&&&0910 sq mi
(&&&&&&&&&&&02357.&&&&&02,357 km²)
State map highlighting York County

See also

Pennsylvania counties by per capita income arranged in order from richest to poorest

Lists of counties in the United States
(parishes in Louisiana; boroughs and census areas in Alaska)

Alabama | Alaska | Arizona | Arkansas | California | Colorado | Connecticut | Delaware | Florida | Georgia | Hawaii | Idaho | Illinois | Indiana | Iowa | Kansas | Kentucky | Louisiana | Maine | Maryland | Massachusetts | Michigan | Minnesota | Mississippi | Missouri | Montana | Nebraska | Nevada | New Hampshire | New Jersey | New Mexico | New York | North Carolina | North Dakota | Ohio | Oklahoma | Oregon | Pennsylvania | Rhode Island | South Carolina | South Dakota | Tennessee | Texas | Utah | Vermont | Virginia | Washington | West Virginia | Wisconsin | Wyoming

References

  1. ^ EPA County FIPS Code Listing. EPA. Retrieved on 2007-04-09.
This page uses content from the English language Wikipedia. The original content was at List of counties in Pennsylvania. The list of authors can be seen in the page history. As with this Familypedia wiki, the content of Wikipedia is available under the Creative Commons License.

This article uses material from the "List of counties in Pennsylvania" article on the Genealogy wiki at Wikia and is licensed under the Creative Commons Attribution-Share Alike License.

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