There are 9 zip codes in Putnam County, New York. The most populated is 10541, located in Mahopac. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
Population
City
1054126,116Mahopac
1051224,256Carmel
1050919,832Brewster
105798,171Putnam Valley
125637,691Patterson
105165,585Cold Spring
105244,344Garrison
105372,961Lake Peekskill
105420Mahopac Falls

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