Bordering states
Indiana vs Ohio
Short answer
- IN
- 6,924,275
- OH
- 11,883,304
The two states, county by county
Both maps share one density scale, so the same shade means the same number of people per square mile on either side of the border. Darker counties are denser. Select a county to open its page.
Indiana
Ohio
- < 60
- < 88
- < 122
- < 290
- ≥ 290
Side by side
| Measure | Indiana | Ohio |
|---|---|---|
| Residents, 2024 | 6,924,275 | 11,883,304 |
| Rank by population | 17th | 7th |
| Land, sq mi | 35,825 | 40,859 |
| People per sq mi | 193.3 | 290.8 |
| County-equivalents | 92 | 88 |
| Median county residents | 34,874 | 58,250 |
| Median county income | $66,685 | $65,205 |
| Most populous county | Marion County | Franklin County |
| Largest county by land | Allen County | Ashtabula County |
| Capital | Indianapolis | Columbus |
| Daylight at capital, June 21 | 15 h 00 min | 15 h 01 min |
| Census division | East North Central | East North Central |
Population and density
Ohio has 11,883,304 residents, 72% more than Indiana's 6,924,275. Indiana ranks 17th and Ohio 7th of the 50 states and DC. Ohio is the more crowded, with 290.8 people per square mile against 193.3, 50% more.
Land area
Ohio has 40,859 square miles of land, 14% more than Indiana's 35,825. The largest county-equivalent in Indiana is Allen County at 657 square miles; in Ohio it is Ashtabula County at 702.
Counties
Indiana is divided into 92 county-equivalents and Ohio into 88, so an average Indiana county covers 389 square miles against 464. The typical county in Indiana has 34,874 residents, against 58,250 in Ohio. The most populous are Marion County (981,628) and Franklin County (1,356,303).
36 county names appear on both sides of the border: Adams, Allen, Brown, Carroll, Clark, Clinton, Crawford, Delaware, Fayette, Franklin, Fulton, Greene, Hamilton, Hancock, Harrison, Henry, Jackson, Jefferson, Knox, Lake, Lawrence, Madison, Marion, Miami, Monroe, Montgomery, Morgan, Noble, Perry, Pike, Putnam, Shelby, Union, Warren, Washington, Wayne. Use the FIPS code, not the name, when joining data across the two states.
Household income
The typical county household income is about the same in both: $66,685 in Indiana and $65,205 in Ohio. The highest county incomes are Hamilton County ($121,231) in Indiana and Delaware County ($128,300) in Ohio, from SAIPE 2023.
Capitals and daylight
Indianapolis and Columbus are 168 miles apart in a straight line; from Indianapolis the initial bearing is 84°, E. On June 21, 2026, Indianapolis gets 15 h 00 min of daylight and Columbus 15 h 01 min; on December 21 the figures are 9 h 21 min and 9 h 20 min. Month by month tables are on the Indianapolis and Columbus daylight pages.
Where they sit
Both are in the Census East North Central division of the Midwest region. By county internal points, Indiana spans 1 UTM zone and Ohio 2.
Questions people ask
Which is bigger, Indiana or Ohio?
Ohio, with 40,859 square miles of land against 35,825, 1.14 times as large.
Which has more people, Indiana or Ohio?
Ohio has 11,883,304 residents, 72% more than Indiana's 6,924,275.
How far is Indianapolis from Columbus?
168 miles in a straight line, heading E (84°) from Indianapolis.
Do Indiana and Ohio have counties with the same name?
Yes, 36: Adams, Allen, Brown, Carroll, Clark, Clinton, Crawford, Delaware, Fayette, Franklin, Fulton, Greene, Hamilton, Hancock, Harrison, Henry, Jackson, Jefferson, Knox, Lake, Lawrence, Madison, Marion, Miami, Monroe, Montgomery, Morgan, Noble, Perry, Pike, Putnam, Shelby, Union, Warren, Washington, Wayne.
Sources and data as of
Data as of: Census Vintage 2024 population estimates, 2024 Gazetteer land area and internal points, SAIPE 2023 median household income.
- 01Census Vintage 2024 county population estimates
- 02Census 2024 Gazetteer, counties
- 03Census SAIPE 2023 state and county estimates
- 04Census Bureau regions and divisions of the United States (last verified 2026-09-30)
How every number is computed: methodology. Spotted a wrong figure? Report an error.