| County | Mixed Race Percentage of Total Population |
| Morgan |  3 |
| Franklin | 3 |
| Erie | 3 |
| Lucas | 3 |
| Clark | 3 |
| Greene | 3 |
| Lorain | 3 |
| Allen | 3 |
| Muskingum | 2 |
| Montgomery | 2 |
| Stark | 2 |
| Summit | 2 |
| Ross | 2 |
| Sandusky | 2 |
| Hamilton | 2 |
| Athens | 2 |
| Ashtabula | 2 |
| Butler | 2 |
| Mahoning | 2 |
| Logan | 2 |
| Cuyahoga | 2 |
| Licking | 2 |
| Champaign | 2 |
| Fairfield | 2 |
| Richland | 2 |
| Clinton | 2 |
| Guernsey | 2 |
| Scioto | 2 |
| Shelby | 2 |
| Miami | 2 |
| Trumbull | 2 |
| Pike | 2 |
| Jefferson | 2 |
| Seneca | 2 |
| Delaware | 2 |
| Gallia | 2 |
| Portage | 2 |
| Harrison | 2 |
| Marion | 2 |
| Fayette | 2 |
| Wood | 2 |
| Huron | 2 |
| Madison | 2 |
| Hancock | 2 |
| Washington | 2 |
| Morrow | 1 |
| Wayne | 1 |
| Paulding | 1 |
| Jackson | 1 |
| Lake | 1 |
| Highland | 1 |
| Warren | 1 |
| Perry | 1 |
| Pickaway | 1 |
| Columbiana | 1 |
| Defiance | 1 |
| Clermont | 1 |
| Adams | 1 |
| Belmont | 1 |
| Hardin | 1 |
| Union | 1 |
| Lawrence | 1 |
| Van Wert | 1 |
| Vinton | 1 |
| Ottawa | 1 |
| Knox | 1 |
| Medina | 1 |
| Monroe | 1 |
| Tuscarawas | 1 |
| Crawford | 1 |
| Meigs | 1 |
| Hocking | 1 |
| Brown | 1 |
| Carroll | 1 |
| Preble | 1 |
| Coshocton | 1 |
| Darke | 1 |
| Williams | 1 |
| Ashland | 1 |
| Fulton | 1 |
| Auglaize | 1 |
| Henry | 1 |
| Wyandot | 1 |
| Mercer | 1 |
| Geauga | 1 |
| Noble | 1 |
| Putnam | 1 |
| Holmes | 1 |