There are 16 zip codes in Lewis County, New York. The most populated is 13367, located in Lowville. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
13367Lowville8,682
13626Copenhagen2,282
13327Croghan2,230
13620Castorland2,066
13648Harrisville2,007
13433Port Leyden1,647
13343Glenfield1,625
13473Turin1,128
13368Lyons Falls1,121
13325Constableville929
13665Natural Bridge812
13489West Leyden533
13312Brantingham308
13305Beaver Falls201
13345Greig175
13404Martinsburg127

Lewis County, New York Zip Codes by Population (2024)