Indiana Counties
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Indiana Counties

Indiana is divided into ninety-two counties. The oldest and newest Counties in Indiana are Knox County (created 1790) and Newton County (created 1857).Many Indiana counties are named for the US Founding Fathers and personalities of the American Revolutionary War, the War of 1812 and Battle of Tippecanoe; early leaders of Indiana Territory and Indiana, as well as surrounding states like Michigan and Kentucky; plus Native American tribes and geographical features.

Marion County, Indiana

Marion County Education, Geography, and HistoryMarion County, Indiana Courthouse

Marion County is a county located in the state of Indiana. Census 2010 recorded a population of 903,393. Marion County was created on April 1, 1822. The county seat is Indianapolis, the state capital and largest city. The county is named for General Francis Marion, American Revolutionary War hero .

 Marion County is consolidated with Indianapolis through an arrangement known as Unigov. Marion County is included in the Indianapolis-Carmel-Anderson, IN Metropolitan Statistical Area.

Etymology - Origin of Marion County Name

The county is named for Revolutionary War General Francis Marion.


County QuickFacts: CensusBureau Quick Facts

Marion County History

Marion County was created by an act of the Legislature on December 31, 1821, and began its formal existence April 1, 1822. It is named for Francis Marion, a Brigadier General from South Carolina in the American Revolutionary War.

The state capitol was moved to Marion County in 1824 beginning a period of rapid growth in population

Marion County is divided into 9 Civil Townships as follows: Center, Decatur, Franklin, Lawrence, Perry, Pike, Warren, Washington and Wayne.

Geography: Land and Water

As reported by the Census Bureau, the county has a total area of 403 square miles (1,044 km2), of which 396 square miles (1,026 km2) is land and 7 square miles (18 km2) (1.68%) is water.

Marion county is located close to the center of Indiana. Marion County contains two Indiana State Parks, Fort Harrison State Park and White River State Park. The White River flows through the county and is joined by Eagle Creek and Fall Creek. Eagle Creek and Fall Creek have dams in the county forming Eagle Creek Reservoir and Geist Reservoir.

Neighboring Counties

Bordering counties are as follows:

  • North: Hamilton County
  • East: Hancock County
  • Southeast: Shelby County
  • South: Johnson County
  • Southwest: Morgan County
  • West: Hendricks County
  • Northwest: Boone County


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