There are 8 zip codes in Noble County, Ohio. The most populated is 43724, located in Caldwell. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
43724Caldwell9,183
43772Pleasant City1,748
45745Lower Salem1,049
45727Dexter City766
43788Summerfield624
43779Sarahsville531
43717Belle Valley121
43711Ava62

Noble County, Ohio Zip Codes by Population (2024)