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Map of Indiana highlighting Nine-County Region.PNG

The Metropolitan Indianapolis Area (Nine-County Region) is a name to an area comprising nine counties in the center of the U.S. state of Indiana with a 2007 population estimate of 1,774,665.[1] The combined statistical area population of Indianapolis was estimated in 2007 to be 2,014,267, making it the 23rd-largest in the U.S. More specifically, the Nine-County Region describes the agglomeration of the metropolitan area of Indianapolis, the State's capital. It includes Marion, Boone, Hamilton, Madison, Hendricks, Hancock, Morgan, Johnson, and Shelby counties.[2] The counties surrounding Marion are sometimes referred to as the Doughnut Counties (referring to the circular shape of the region, with Marion County as the hole in the center). It is roughly equivalent to the U.S. Census Bureau's official Indianapolis-Carmel, IN Metropolitan Statistical Area [1], which includes the nine counties plus Brown and Putnam counties; but does not include all of the Indianapolis-Anderson-Columbus, IN Combined Statistical Area which adds the Metropolitan Statistical Areas of Anderson, Columbus, Crawfordsville, New Castle and North Vernon.


Principal city

Cities or Towns with 10,000 to 100,000 inhabitants

Cities or Towns with fewer than 10,000 inhabitants




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