There are 9 zip codes in Harrison County, Ohio. The most populated is 43907, located in Cadiz. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
43907Cadiz4,978
43973Freeport2,415
43988Scio2,326
43986Jewett1,783
43976Hopedale1,669
44699Tippecanoe704
43981New Athens208
43974Harrisville88
44693Deersville42

Harrison County, Ohio Zip Codes by Population (2024)