Explore Indiana county boundaries, county seats and 2020 Census population counts, with a labeled map and a full alphabetical county list.
Indiana has 92 counties. The state’s county map connects the Indianapolis area with northern counties near Lake Michigan, eastern communities and the Ohio River region to the south. This guide includes a labeled Indiana county map, a state overview, the most populous counties in the 2020 Census and a complete alphabetical county list.
| Feature | Details |
|---|---|
| State Name | Indiana |
| State Abbreviation | IN |
| Capital City | Indianapolis |
| County-level Areas | 92 counties |
| Population (2020 Census) | 6,785,528 |
| Land Area (2020 Census) | 35,825.18 square miles |
Locate a county by its name, then use its boundary to identify neighboring counties. Indianapolis is associated with Marion County, Fort Wayne with Allen County and South Bend with St. Joseph County. County names and city names can differ, so the county-seat column is useful when you know a city but not its county.
Population comparisons below use the April 1, 2020 Census. They are census counts, not current estimates. Using the same year makes the county comparisons consistent.
| County / Equivalent | County Seat / Government Center | Population — 2020 Census |
|---|---|---|
| Marion County | Indianapolis | 977,203 |
| Lake County | Crown Point | 498,700 |
| Allen County | Fort Wayne | 385,410 |
| Hamilton County | Noblesville | 347,467 |
| St. Joseph County | South Bend | 272,912 |
| Elkhart County | Goshen | 207,047 |
| Tippecanoe County | Lafayette | 186,251 |
The complete alphabetical list below includes all 92 county-level areas, including the 85 not shown in this population table.
| Format | Download |
|---|---|
| PNG Map | Download Now |
| PDF Printable | Download Now |
| SVG Editable | Download Now |
| GIS Shapefile (ZIP) | Download Now |
❓ How many counties are in Indiana?
Indiana has 92 counties. All county-level areas are identified on this map.
❓ What is the capital of Indiana?
Indianapolis is the state capital.
❓ Which county had the largest population in the 2020 Census?
Marion County had 977,203 residents in the 2020 Census. Its county seat or government center is Indianapolis.
❓ What is the largest county in Indiana by land area?
Allen County has the greatest land area in the Census boundary dataset. Land area and population rankings measure different things.
❓ What county is Indianapolis in?
Indianapolis is in Marion County. It is Indiana’s capital and Marion County’s county seat.
❓ What county is Fort Wayne in?
Fort Wayne is in Allen County and serves as its county seat.
❓ What county is South Bend in?
South Bend is the county seat of St. Joseph County.
❓ Is the city of Marion in Marion County?
No. The city of Marion is in Grant County. Marion County’s county seat is Indianapolis.
❓ How should I use this county map?
Use a county name or a known county seat to identify the area, then follow its boundary to neighboring counties. City limits and county boundaries are different. This reference map does not show property lines or road navigation.
Boundaries and county names are from U.S. Census Bureau TIGERweb, January 1, 2026 vintage. Population and state land-area figures use 2020 Census geography and counts. County seats and state geography were checked against Indiana state county directory. The 2020 population figures are not presented as current estimates.
