There are 10 zip codes in Delaware County, Ohio. The most populated is 43015, located in Delaware. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
43015Delaware57,745
43065Powell45,067
43035Lewis Center34,661
43082Westerville33,195
43074Sunbury15,597
43021Galena14,295
43240Columbus6,968
43061Ostrander5,045
43066Radnor1,173
43032Kilbourne0

Delaware County, Ohio Zip Codes by Population (2024)