Ohio counties
Every county in Ohio, with the ZIP codes recorded in each. Pick one to see its full ZIP code list.
- counties
- 88
- ZIP codes
- 1,416
All Ohio counties
| County | ZIP codes | Largest city |
|---|---|---|
| Adams County | 9 | Bentonville |
| Allen County | 13 | Lima |
| Ashland County | 10 | Ashland |
| Ashtabula County | 17 | Ashtabula |
| Athens County | 19 | Albany |
| Auglaize County | 11 | Buckland |
| Belmont County | 26 | Alledonia |
| Brown County | 12 | Aberdeen |
| Butler County | 21 | Hamilton |
| Carroll County | 7 | Augusta |
| Champaign County | 10 | Cable |
| Clark County | 15 | Springfield |
| Clermont County | 16 | Amelia |
| Clinton County | 10 | Blanchester |
| Columbiana County | 21 | Columbiana |
| Coshocton County | 10 | Bakersville |
| Crawford County | 9 | Bucyrus |
| Cuyahoga County | 62 | Cleveland |
| Darke County | 15 | Ansonia |
| Defiance County | 8 | Defiance |
| Delaware County | 10 | Ashley |
| Erie County | 9 | Sandusky |
| Fairfield County | 14 | Amanda |
| Fayette County | 4 | Bloomingburg |
| Franklin County | 63 | Columbus |
| Fulton County | 8 | Archbold |
| Gallia County | 9 | Bidwell |
| Geauga County | 13 | Novelty |
| Greene County | 13 | Dayton |
| Guernsey County | 14 | Buffalo |
| Hamilton County | 78 | Cincinnati |
| Hancock County | 13 | Findlay |
| Hardin County | 10 | Ada |
| Harrison County | 11 | Bowerston |
| Henry County | 12 | Colton |
| Highland County | 7 | Greenfield |
| Hocking County | 8 | Carbon Hill |
| Holmes County | 12 | Berlin |
| Huron County | 11 | Willard |
| Jackson County | 4 | Coalton |
| Jefferson County | 23 | Steubenville |
| Knox County | 10 | Bladensburg |
| Lake County | 11 | Eastlake |
| Lawrence County | 10 | Chesapeake |
| Licking County | 20 | Newark |
| Logan County | 14 | Belle Center |
| Lorain County | 16 | Lorain |
| Lucas County | 42 | Toledo |
| Madison County | 6 | London |
| Mahoning County | 32 | Youngstown |
| Marion County | 10 | Marion |
| Medina County | 16 | Medina |
| Meigs County | 11 | Chester |
| Mercer County | 10 | Burkettsville |
| Miami County | 14 | Troy |
| Monroe County | 12 | Beallsville |
| Montgomery County | 51 | Dayton |
| Morgan County | 4 | Chesterhill |
| Morrow County | 9 | Cardington |
| Muskingum County | 18 | Zanesville |
| Noble County | 6 | Ava |
| Ottawa County | 16 | Clay Center |
| Paulding County | 9 | Antwerp |
| Perry County | 11 | Corning |
| Pickaway County | 9 | Ashville |
| Pike County | 8 | Beaver |
| Portage County | 17 | Kent |
| Preble County | 10 | Camden |
| Putnam County | 14 | Belmore |
| Richland County | 14 | Mansfield |
| Ross County | 11 | Adelphi |
| Sandusky County | 8 | Burgoon |
| Scioto County | 15 | Lucasville |
| Seneca County | 14 | Alvada |
| Shelby County | 12 | Sidney |
| Stark County | 42 | Canton |
| Summit County | 48 | Akron |
| Trumbull County | 28 | Warren |
| Tuscarawas County | 20 | Baltic |
| Union County | 9 | Marysville |
| Van Wert County | 9 | Convoy |
| Vinton County | 7 | Creola |
| Warren County | 12 | Franklin |
| Washington County | 20 | Barlow |
| Wayne County | 16 | Apple Creek |
| Williams County | 10 | Alvordton |
| Wood County | 30 | Bowling Green |
| Wyandot County | 8 | Carey |
Scope every county-equivalent recorded in Ohio. Source Census 2024 county Gazetteer (2024 Gazetteer) and GeoNames US postal codes (2026-07 postal dump). Updated . Names and boundaries follow the Census Bureau's current county-equivalent set, not the OH postal source's older names.