Ranking of Ohio Counties By Total Population from Census 2020
Updated on February 7, 2023.
According to the data from the US 2020 Census, the most populated Ohio county as at April 2020 was Franklin County (1.32M), followed by Cuyahoga County (1.26M), and Hamilton County (830.64K).
The chart below shows the top 10 most populated counties, and the table below shows the ranking of all the counties in the state of Ohio.
You can also see the ranking of counties by population for other states as well as for the whole United States.
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Related Topics: Ohio Census 2020 Topic List.
Data Source: US Census Bureau, 2020 Census.
Ranking of Ohio Counties By Total Population from Census 2020
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| Rank | County | Population |
|---|---|---|
| 1 | Franklin County | 1323807 |
| 2 | Cuyahoga County | 1264817 |
| 3 | Hamilton County | 830639 |
| 4 | Summit County | 540428 |
| 5 | Montgomery County | 537309 |
| 6 | Lucas County | 431279 |
| 7 | Butler County | 390357 |
| 8 | Stark County | 374853 |
| 9 | Lorain County | 312964 |
| 10 | Warren County | 242337 |
| 11 | Lake County | 232603 |
| 12 | Mahoning County | 228614 |
| 13 | Delaware County | 214124 |
| 14 | Clermont County | 208601 |
| 15 | Trumbull County | 201977 |
| 16 | Medina County | 182470 |
| 17 | Licking County | 178519 |
| 18 | Greene County | 167966 |
| 19 | Portage County | 161791 |
| 20 | Fairfield County | 158921 |
| 21 | Clark County | 136001 |
| 22 | Wood County | 132248 |
| 23 | Richland County | 124936 |
| 24 | Wayne County | 116894 |
| 25 | Miami County | 108774 |
| 26 | Allen County | 102206 |
| 27 | Columbiana County | 101877 |
| 28 | Ashtabula County | 97574 |
| 29 | Geauga County | 95397 |
| 30 | Tuscarawas County | 93263 |
| 31 | Muskingum County | 86410 |
| 32 | Ross County | 77093 |
| 33 | Erie County | 75622 |
| 34 | Hancock County | 74920 |
| 35 | Scioto County | 74008 |
| 36 | Belmont County | 66497 |
| 37 | Marion County | 65359 |
| 38 | Jefferson County | 65249 |
| 39 | Union County | 62784 |
| 40 | Knox County | 62721 |
| 41 | Athens County | 62431 |
| 42 | Washington County | 59771 |
| 43 | Sandusky County | 58896 |
| 44 | Huron County | 58565 |
| 45 | Pickaway County | 58539 |
| 46 | Lawrence County | 58240 |
| 47 | Seneca County | 55069 |
| 48 | Ashland County | 52447 |
| 49 | Darke County | 51881 |
| 50 | Shelby County | 48230 |
| 51 | Auglaize County | 46422 |
| 52 | Logan County | 46150 |
| 53 | Holmes County | 44223 |
| 54 | Madison County | 43824 |
| 55 | Brown County | 43676 |
| 56 | Highland County | 43317 |
| 57 | Fulton County | 42713 |
| 58 | Mercer County | 42528 |
| 59 | Crawford County | 42025 |
| 60 | Clinton County | 42018 |
| 61 | Preble County | 40999 |
| 62 | Ottawa County | 40364 |
| 63 | Champaign County | 38714 |
| 64 | Guernsey County | 38438 |
| 65 | Defiance County | 38286 |
| 66 | Williams County | 37102 |
| 67 | Coshocton County | 36612 |
| 68 | Perry County | 35408 |
| 69 | Morrow County | 34950 |
| 70 | Putnam County | 34451 |
| 71 | Jackson County | 32653 |
| 72 | Hardin County | 30696 |
| 73 | Gallia County | 29220 |
| 74 | Fayette County | 28951 |
| 75 | Van Wert County | 28931 |
| 76 | Hocking County | 28050 |
| 77 | Henry County | 27662 |
| 78 | Adams County | 27477 |
| 79 | Pike County | 27088 |
| 80 | Carroll County | 26721 |
| 81 | Meigs County | 22210 |
| 82 | Wyandot County | 21900 |
| 83 | Paulding County | 18806 |
| 84 | Harrison County | 14483 |
| 85 | Noble County | 14115 |
| 86 | Morgan County | 13802 |
| 87 | Monroe County | 13385 |
| 88 | Vinton County | 12800 |