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
Population
City
4335110,591Upper Sandusky
433166,209Carey
448822,381Sycamore
448492,231Nevada
43323626Harpster
43359618Wharton
4333048Kirby

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