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Mid Michigan
Lower Peninsula of Michigan
Country  United States
State  Michigan
The Flint/Tri-Cities Region is highlighted in red.

The Flint/Tri-Cities Region is a region in the Lower Peninsula of the U.S. state of Michigan. Flint/Tri-Cities has two subregions, The Thumb and the Greater Tri Cities. Flint's population is 124,943, the fifth largest city in Michigan, the combined population of the Greater Tri-Cities (Saginaw, Midland, and Bay City) is 398,482. Genesee, St. Clair and Lapeer counties are located in Detroit–Ann Arbor–Flint Combined Statistical Area.



Straw Bales in an area field

The Flint and Tri-Cities area, as well as most of Michigan is dependent on manufacturing. Automobile manufacturing is most prevalent in Saginaw and Flint, whereas Midland is the headquarters of the Dow Chemical Company, the world's second largest chemical producer. Rural areas grow crops such as sugar beets, navy beans, corn, fruits, and fish from the Saginaw Bay and Lake Huron.



Several large corporations have operations in the Tri-Cities. The Michigan Sugar Company, which is a cooperative owned by 1250 farmers, operates factories in Bay City, Caro, Croswell, and Sebewaing.[1] General Motors operates the Flint Truck Assembly factory in Flint and Powertrain plants in Flint, Bay City, and Saginaw. The Dow Chemical Company's world headquarters is based in Midland. Delphi Corporation operates Delphi Saginaw Steering Systems in Saginaw. S.C. Johnson and Son has a manufacturing facility in Bay City making Ziploc products.


Counties included

Geographic features

The area has many lakes and rivers.


Airlines and airports

Scheduled airline service is available from MBS International Airport[2] near Midland, Michigan and Flint Bishop International Airport.[3] The only international airport in the thumb area is St. Clair County International Airport about 6 miles outside Port Huron.


Interstate highways

U.S. Highways

Michigan Highways

  • M-13.svg M-13 is a 72.22 mile north-south highway that cuts through the bay region of the U.S. state of Michigan. The southern terminus is at I-69 south of the town of Lennon with its northern terminus located south of Standish. It is a shorter alternative route, instead of I-75, from Bay City to US 23 in Standish.
  • M-15.svgM-15
  • M-19.svgM-19
  • M-20.svgM-20
  • M-21.svgM-21
  • old M-21.svg M-21
  • M-24.svgM-24
  • M-25.svgM-25 is a highway of an arc-like shape closely following the outline of the Thumb along the Lake Huron/Saginaw Bay shoreline between Port Huron, Michigan (junction I-94, US I-69, and Business Loop 94.svg I-94 Business Loop and Bay City, Michigan (junction US I-75, US-23, and US-10.[5] It is generally a scenic drive.
  • M-29.svgM-29
  • M-30.svgM-30
  • M-46.svgM-46 is a cross peninsular road, running across the mitten and the thumb—from Port Sanilac on the Lake Huron shore; through Saginaw near Saginaw Bay; and then on to Muskegon on the Lake Michigan shore.[6] This east-west surface route nearly bisects the Lower Peninsula of Michigan latitudinally.
  • M-47.svgM-47
  • M-53.svgM-53 (Van Dyke Road) is a gateway route to The Thumb of Michigan, carrying vacationers to the resorts and cottages on Saginaw Bay and Lake Huron in the vicinity of Caseville and Port Austin. It goes up the middle of the Thumb, and directly connects in Macomb County, Michigan to the M-53 expressway. It is an important route for agricultural and manufactured goods.
  • M-52.svgM-52
  • M-54.svgM-54 The Dort Highway, A main road leading into Flint replaced by I-475
  • M-57.svgM-57
  • M-58.svgM-58
  • M-81.svgM-81
  • M-83.svg M-83
  • M-84.svg M-84
  • M-90.svgM-90
  • M-136.svgM-136
  • M-138.svgM-138
  • M-142.svgM-142


Area Amtrak stations are in Lapeer, Port Huron, Flint and Durand. Local railroads are the Grand Trunk Western Railroad, CSX Transport, Canadian National Rail , Pere Marquette Railway, and the Huron & Eastern Saginaw Valley Railroad.




The Flint/Tri-Cities area lies within four radio media markets.

  • Thumb Radio Region
  • Greater Tri-Cities
  • Flint Area
  • Detroit Area

Broadcast television

Television in Tri-Cities and Flint is mostly produced from the Flint/Tri-Cities Television Market. Far eastern areas such as Lapeer County, St. Clair County and Sanilac County lie in the Detroit Television Market. Areas like Genesee County can view programing from the Detroit and Flint/Saginaw media markets.

Availability of stations depend on reception of aerial signals, as well as availability on cable and satellite in a particular area.

Principal cities

Flint's Genesee Towers
Port Huron's Blue Water Bridges

See also


External links


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