There are 15 zip codes in Ashtabula County, Ohio. The most populated is 44004, located in Ashtabula. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
4400431,348Ashtabula
4403016,387Conneaut
4404114,073Geneva
440478,736Jefferson
440034,888Andover
440764,749Orwell
440843,931Rock Creek
440853,334Rome
440482,465Kingsville
440992,290Windsor
440101,588Austinburg
440821,587Pierpont
440321,546Dorset
440931,007Williamsfield
44068166North Kingsville

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