There are 69 zip codes in Nassau County, New York. The most populated is 11550, located in Hempstead. * 2024 populations estimated based on the latest ACS 5-year data.

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Zip Code
City
Population
11550Hempstead60,668
11758Massapequa54,201
11590Westbury47,951
11003Elmont47,515
11520Freeport44,876
11580Valley Stream43,396
11756Levittown42,459
11040New Hyde Park42,140
11801Hicksville41,967
11561Long Beach38,755
11554East Meadow36,856
11510Baldwin35,070
11710Bellmore34,950
11566Merrick33,976
11050Port Washington31,920
11793Wantagh30,865
11803Plainview30,298
11572Oceanside29,961
11542Glen Cove29,095
11570Rockville Centre28,262
11530Garden City28,207
11553Uniondale27,886
11001Floral Park26,138
11552West Hempstead26,043
11010Franklin Square25,751
11791Syosset25,631
11581Valley Stream22,770
11714Bethpage22,444
11762Massapequa Park22,440
11563Lynbrook22,055
11783Seaford21,916
11501Mineola21,434
11021Great Neck19,623
11575Roosevelt19,102
11030Manhasset17,168
11598Woodmere14,531
11753Jericho13,087
11576Roslyn12,506
11577Roslyn Heights12,399
11545Glen Head12,068
11596Williston Park10,520
11518East Rockaway10,294
11771Oyster Bay10,068
11023Great Neck9,699
11096Inwood9,567
11797Woodbury9,203
11024Great Neck9,105
11565Malverne9,013
11559Lawrence8,732
11558Island Park8,660
11516Cedarhurst8,450
11557Hewlett8,290
11507Albertson7,111
11560Locust Valley7,043
11709Bayville6,763
11020Great Neck6,145
11579Sea Cliff5,062
11514Carle Place5,040
11804Old Bethpage4,443
11568Old Westbury4,272
11732East Norwich3,546
11549Hempstead2,508
11548Greenvale2,230
11509Atlantic Beach1,682
11569Point Lookout1,110
11765Mill Neck708
11547Glenwood Landing585
11042New Hyde Park317
11556Uniondale0
showing: 69 rows

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