Note: Every ZIP Code has a single ACTUAL City Name assigned by the US Postal Service (USPS).
See the specific ZIP Code for acceptable Alternate City Names and spelling variations.
ZIP Codes in Nassau County Address Data
Businesses Addresses: 51,961
PO Box Addresses: 19,658
Residential Addresses: 448,744
Multi-Family Addresses: 46,869
Single Family Addresses: 398,308
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Map of Nassau County, NY ZIP Codes With Actual (Default) City Names
