- Caledonia - Zip Codes in Caledonia
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- Cambria Heights - Zip Codes in Cambria Heights
- Cambridge - Zip Codes in Cambridge
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- Camillus - Zip Codes in Camillus
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- Canton - Zip Codes in Canton
- Carle Place - Zip Codes in Carle Place
- Carmel - Zip Codes in Carmel
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- Castleton On Hudson - Zip Codes in Castleton On Hudson
- Cato - Zip Codes in Cato
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- Cazenovia - Zip Codes in Cazenovia
- Cedarhurst - Zip Codes in Cedarhurst
- Centereach - Zip Codes in Centereach
- Center Moriches - Zip Codes in Center Moriches
- Centerport - Zip Codes in Centerport
- Central Islip - Zip Codes in Central Islip
- Central Square - Zip Codes in Central Square
- Chappaqua - Zip Codes in Chappaqua
- Chatham - Zip Codes in Chatham
- Chester - Zip Codes in Chester
- Chittenango - Zip Codes in Chittenango
- Churchville - Zip Codes in Churchville
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- Clarence - Zip Codes in Clarence
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- Clay - Zip Codes in Clay
- Clayton - Zip Codes in Clayton
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- Corfu - Zip Codes in Corfu
- Corinth - Zip Codes in Corinth
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- Cornwall - Zip Codes in Cornwall
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- Cortlandt Manor - Zip Codes in Cortlandt Manor
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- Croton On Hudson - Zip Codes in Croton On Hudson
- Cuba - Zip Codes in Cuba
- Dansville - Zip Codes in Dansville
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- Delanson - Zip Codes in Delanson
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- Delhi - Zip Codes in Delhi
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- Depew - Zip Codes in Depew
- Derby - Zip Codes in Derby
- Dobbs Ferry - Zip Codes in Dobbs Ferry
- Dover Plains - Zip Codes in Dover Plains
- Dryden - Zip Codes in Dryden
- Dundee - Zip Codes in Dundee
- Dunkirk - Zip Codes in Dunkirk