There are 8 zip codes in Seneca County, New York. The most populated is 13148, located in Seneca Falls. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1314810,854Seneca Falls
131659,511Waterloo
145413,660Romulus
145213,366Ovid
148472,409Interlaken
148601,121Lodi
13065222Fayette
145880Willard

Zip Codes in Seneca County, New York by Population (2024)