A list of zip codes in Ohio is available from UnitedStatesZipCodes.org, MapsofWorld.com and 50states.com. The website of the U.S. Postal Service also provides a search tool for searching zip codes within the state by address, with a reverse lookup to identify all cities falling within a specific zip code.
The list of Ohio zip codes provided by UnitedStatesZipCodes.org is listed in numerical order and provides the types of zip codes, their common cities, their counties and the area codes within their boundaries. The website also features a map and search tool. The lists provided by Maps of the World are divided by county.