There are 7 zip codes in Wyandot County, Ohio. The most populated is 43351, located in Upper Sandusky. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
43351Upper Sandusky10,591
43316Carey6,209
44882Sycamore2,381
44849Nevada2,231
43323Harpster626
43359Wharton618
43330Kirby48

Wyandot County, Ohio Zip Codes by Population (2024)