# Counties in Ohio by population density, 2025

All 88 values come from U.S. Census Bureau for 2025, so the places are comparable.

- Indicator id: `population_density`
- Unit: inhabitants per km²
- Definition: Resident population divided by land area in km². World Bank figures use mid-year population and land area excluding inland water.
- Source: U.S. Census Bureau, Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km² (https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/)
- Retrieved: 2026-10-09
- Citation: U.S. Census Bureau. Population Estimates Program resident population on 1 July divided by land area from the latest Census Gazetteer files, persons per km². https://www2.census.gov/programs-surveys/popest/datasets/2020-2025/. Retrieved 2026-10-09.
- Web page: https://invokely.ai/rankings/population-density/ohio-counties
- CSV: https://invokely.ai/download/rankings/population-density/ohio-counties.csv

| Rank | Place | inhabitants per km² |
|---:|---|---:|
| 1 | Cuyahoga County | 1,041.1 |
| 2 | Franklin County | 987.3 |
| 3 | Hamilton County | 798.4 |
| 4 | Summit County | 503.7 |
| 5 | Lucas County | 481.2 |
| 6 | Montgomery County | 451.6 |
| 7 | Lake County | 390.9 |
| 8 | Butler County | 331.1 |
| 9 | Lorain County | 254.4 |
| 10 | Stark County | 251 |
| 11 | Warren County | 247.4 |
| 12 | Delaware County | 210.9 |
| 13 | Mahoning County | 210.8 |
| 14 | Clermont County | 185.1 |
| 15 | Medina County | 169.5 |
| 16 | Greene County | 162.7 |
| 17 | Clark County | 132 |
| 18 | Fairfield County | 129.9 |
| 19 | Portage County | 129.4 |
| 20 | Trumbull County | 124.4 |
| 21 | Erie County | 112.6 |
| 22 | Miami County | 107 |
| 23 | Licking County | 105 |
| 24 | Richland County | 97.4 |
| 25 | Allen County | 96.8 |
| 26 | Geauga County | 92.3 |
| 27 | Wood County | 83.9 |
| 28 | Wayne County | 81.2 |
| 29 | Columbiana County | 72.1 |
| 30 | Union County | 65.7 |
| 31 | Tuscarawas County | 62.8 |
| 32 | Marion County | 62.3 |
| 33 | Jefferson County | 60.2 |
| 34 | Ottawa County | 59.9 |
| 35 | Sandusky County | 55.5 |
| 36 | Hancock County | 54.5 |
| 37 | Ashtabula County | 53.2 |
| 38 | Muskingum County | 50.6 |
| 39 | Pickaway County | 48.5 |
| 40 | Athens County | 48.4 |
| 41 | Ashland County | 47.9 |
| 42 | Lawrence County | 47.4 |
| 43 | Knox County | 47 |
| 44 | Belmont County | 46.7 |
| 45 | Huron County | 45.7 |
| 46 | Shelby County | 45.5 |
| 47 | Scioto County | 45.2 |
| 48 | Auglaize County | 44.2 |
| 49 | Ross County | 42.8 |
| 50 | Holmes County | 41.1 |
| 51 | Crawford County | 40.3 |
| 52 | Clinton County | 40 |
| 53 | Fulton County | 39.9 |
| 54 | Logan County | 39 |
| 55 | Madison County | 38.9 |
| 56 | Seneca County | 38.2 |
| 57 | Preble County | 37 |
| 58 | Defiance County | 35.9 |
| 59 | Mercer County | 35.7 |
| 60 | Washington County | 35.7 |
| 61 | Brown County | 35 |
| 62 | Champaign County | 34.9 |
| 63 | Morrow County | 34.5 |
| 64 | Perry County | 34 |
| 65 | Williams County | 33.5 |
| 66 | Darke County | 33.3 |
| 67 | Highland County | 30.6 |
| 68 | Jackson County | 30.1 |
| 69 | Guernsey County | 28.4 |
| 70 | Putnam County | 27.5 |
| 71 | Van Wert County | 27.4 |
| 72 | Fayette County | 27.1 |
| 73 | Carroll County | 25.9 |
| 74 | Henry County | 25.6 |
| 75 | Coshocton County | 25.5 |
| 76 | Hocking County | 25.2 |
| 77 | Hardin County | 24.7 |
| 78 | Gallia County | 24.1 |
| 79 | Pike County | 23.7 |
| 80 | Wyandot County | 20.5 |
| 81 | Meigs County | 19.4 |
| 82 | Adams County | 18.4 |
| 83 | Paulding County | 17.4 |
| 84 | Noble County | 13.9 |
| 85 | Harrison County | 13.5 |
| 86 | Morgan County | 12.6 |
| 87 | Vinton County | 11.8 |
| 88 | Monroe County | 11 |