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Marion County is located in the U.S. state of Indiana. The 2020 United States census reported a population of 977,203, [1] making it the 54th-most populous county in the U.S., the most populous county in the state, and the main population center of the 11-county Indianapolis–Carmel–Greenwood MSA in central Indiana.
Indianapolis & Marion County are represented by several elected officials. Learn more about these representatives and their offices below.
Discover Indiana's counties with ease using our interactive county map resource. Whether you're a resident or a visitor, this map provides a convenient platform to access a wealth of information and resources specific to each county.
Jun 11, 2023 · Situated in central Indiana, Marion County is an exciting destination full of leisure and recreation activities. The county traces its origin to the 1820s, a few years after Indiana became a state of the Union.
Home of the City of Indianapolis, Marion County was named in honor of Revolutionary War General Francis Marion. It was organized in 1821 when the state decided to move its capital to a more central location.
In 2022, Marion County, IN had a population of 972k people with a median age of 34.4 and a median household income of $59,504. Between 2021 and 2022 the population of Marion County, IN grew from 969,542 to 971,737, a 0.226% increase and its median household income grew from $54,601 to $59,504, a 8.98% increase.
County: Region: Marion County, Indiana. Named in 1822 for Revolutionary War General Francis Marion. County Seat: Indianapolis. Largest City: Indianapolis (2023 population: 888,578) Population per Square Mile: 2,443.75. Square Miles: 396.30. Go to county's in.gov site. *Projection based on 2020 Census population estimates.
