There are 20 zip codes in Jefferson County, Ohio. The most populated is 43952, located in Steubenville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4395217,412Steubenville
4395312,047Steubenville
439649,199Toronto
439385,868Mingo Junction
439103,283Bloomingdale
439433,180Rayland
439172,850Dillonvale
439442,538Richmond
439011,907Adena
439631,309Tiltonsville
439301,250Hammondsville
439131,068Brilliant
439081,038Bergholz
43971970Yorkville
43932920Irondale
43948682Smithfield
43939291Mount Pleasant
43961239Stratton
43926237Empire
4392586East Springfield

Zip Codes in Jefferson County, Ohio by Population (2024)