There are 10 zip codes in Champaign County, Ohio. The most populated is 43078, located in Urbana. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4307820,269Urbana
430725,380Saint Paris
430445,254Mechanicsburg
430602,669North Lewisburg
430092,140Cable
45317922Conover
43084811Woodstock
45389594Christiansburg
4307053Rosewood
4304711Mingo

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