Ranking of Ohio Counties By Population in 2015
Updated on January 28, 2024.
Based on the US Census Vintage data estimates, in 2015, the Population for Ohio was 11.62M. Among all Ohio counties, Cuyahoga County had the highest population (1.26M), followed by Franklin County (1.26M), and Hamilton County (809.90K).
The chart below shows the top 10 counties, and the table below shows the ranking of all Ohio counties.
You can see similar ranking information for related topics, and for other states. You can also see the ranking of all counties in the United States.
Related Topics: Ohio Census Vintage Data Topic List.
Data Source: US Census Bureau (Vintage), 2015 Census.
See this for other years:
Ranking of Ohio Counties By Population in 2015
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| Rank | County | Population |
|---|---|---|
| 1 | Cuyahoga County | 1259109 |
| 2 | Franklin County | 1257891 |
| 3 | Hamilton County | 809902 |
| 4 | Summit County | 541940 |
| 5 | Montgomery County | 532059 |
| 6 | Lucas County | 433826 |
| 7 | Butler County | 376173 |
| 8 | Stark County | 374798 |
| 9 | Lorain County | 305533 |
| 10 | Mahoning County | 231988 |
| 11 | Lake County | 229843 |
| 12 | Warren County | 224018 |
| 13 | Trumbull County | 203442 |
| 14 | Clermont County | 202077 |
| 15 | Delaware County | 193624 |
| 16 | Medina County | 176185 |
| 17 | Licking County | 170721 |
| 18 | Greene County | 164421 |
| 19 | Portage County | 162667 |
| 20 | Fairfield County | 151310 |
| 21 | Clark County | 135810 |
| 22 | Wood County | 129375 |
| 23 | Richland County | 121720 |
| 24 | Wayne County | 116262 |
| 25 | Columbiana County | 104788 |
| 26 | Allen County | 104141 |
| 27 | Miami County | 104100 |
| 28 | Ashtabula County | 98443 |
| 29 | Geauga County | 93899 |
| 30 | Tuscarawas County | 92782 |
| 31 | Muskingum County | 86213 |
| 32 | Ross County | 77067 |
| 33 | Scioto County | 77024 |
| 34 | Hancock County | 75726 |
| 35 | Erie County | 75388 |
| 36 | Belmont County | 69018 |
| 37 | Jefferson County | 67546 |
| 38 | Athens County | 65949 |
| 39 | Marion County | 65470 |
| 40 | Washington County | 61075 |
| 41 | Knox County | 61045 |
| 42 | Lawrence County | 60990 |
| 43 | Sandusky County | 59476 |
| 44 | Huron County | 58325 |
| 45 | Pickaway County | 56991 |
| 46 | Seneca County | 55672 |
| 47 | Union County | 54394 |
| 48 | Ashland County | 53317 |
| 49 | Darke County | 52002 |
| 50 | Shelby County | 49036 |
| 51 | Auglaize County | 45754 |
| 52 | Logan County | 45255 |
| 53 | Madison County | 44149 |
| 54 | Holmes County | 43885 |
| 55 | Brown County | 43717 |
| 56 | Highland County | 42973 |
| 57 | Crawford County | 42327 |
| 58 | Fulton County | 42299 |
| 59 | Clinton County | 41864 |
| 60 | Preble County | 41313 |
| 61 | Ottawa County | 40761 |
| 62 | Mercer County | 40735 |
| 63 | Guernsey County | 39402 |
| 64 | Champaign County | 38976 |
| 65 | Defiance County | 38349 |
| 66 | Williams County | 37036 |
| 67 | Coshocton County | 36579 |
| 68 | Perry County | 35970 |
| 69 | Morrow County | 34954 |
| 70 | Putnam County | 34020 |
| 71 | Jackson County | 32575 |
| 72 | Hardin County | 31615 |
| 73 | Gallia County | 30258 |
| 74 | Fayette County | 28617 |
| 75 | Hocking County | 28502 |
| 76 | Van Wert County | 28330 |
| 77 | Pike County | 28115 |
| 78 | Adams County | 27919 |
| 79 | Carroll County | 27729 |
| 80 | Henry County | 27490 |
| 81 | Meigs County | 23192 |
| 82 | Wyandot County | 22181 |
| 83 | Paulding County | 18953 |
| 84 | Harrison County | 15396 |
| 85 | Morgan County | 14736 |
| 86 | Noble County | 14468 |
| 87 | Monroe County | 14267 |
| 88 | Vinton County | 13083 |