ZIP codes

ZIP codes in Nassau County, New York

Nassau County has 70 ZIP codes. 67 lie entirely inside it and 3 are shared with neighboring counties, so part of their land and their people are elsewhere. About 1,390,532 people live in the parts inside it (ACS 2020–2024).

By the All Map Tools Team

ZIP codes: 70; With 1% or more of their land inside
Entirely inside: 67; 99% or more of their land
Shared with other counties: 3; Most with Queens County (2)
Most populated ZIP: 11550; 60,960 people · Hempstead
Least populated ZIP: 11042; 141 people · Lake Success; 1 more with nobody living there
Largest ZIP by land: 11791; 13 sq mi · Syosset

Map of the ZIP codes in Nassau County

Entirely in the county (99% or more of its land)
Shared, mostly in this county
Shared, mostly in other counties
Neighboring counties

Open in the interactive tool

Each area is a ZIP code with its number where it fits. Hover over one to see its name.

All ZIP codes in Nassau County

70 ZIP codes in Nassau County, NY, by number
ZIP code	Main city	Population	Land in the county	Residents in the county
11001	Floral Park	25,493	88%	≈ 21,746
11003	Elmont	45,174	100%	45,174
11010	Franklin Square	25,604	100%	25,604
11020	Lake Success	5,676	100%	5,676
11021	Great Neck Estates	19,783	100%	19,783
11023	Great Neck	9,630	100%	9,630
11024	Kings Point	9,155	100%	9,155
11030	Manhasset	18,051	100%	18,051
11040	North New Hyde Park	41,988	97%	≈ 39,601
11042	Lake Success	141	100%	141
11050	Sands Point	32,794	100%	32,794
11096	Inwood	10,428	100%	10,428
11501	Mineola	21,641	100%	21,641
11507	Albertson	6,736	100%	6,736
11509	Atlantic Beach	1,790	100%	1,790
11510	Baldwin	35,701	100%	35,701
11514	Carle Place	4,544	100%	4,544
11516	Cedarhurst	9,112	100%	9,112
11518	East Rockaway	10,149	100%	10,149
11520	Freeport	44,910	100%	44,910
11530	Garden City	27,939	100%	27,939
11542	Glen Cove	28,965	100%	28,965
11545	Old Brookville	12,172	100%	12,172
11547	Glenwood Landing	706	100%	706
11548	Brookville	2,261	100%	2,261
11549	Uniondale	2,359	100%	2,359
11550	Hempstead	60,960	100%	60,960
11552	West Hempstead	25,174	100%	25,174
11553	Uniondale	27,875	100%	27,875
11554	East Meadow	36,821	100%	36,821
11556	Uniondale	0	100%	0
11557	Hewlett	8,504	100%	8,504
11558	Barnum Island	8,454	100%	8,454
11559	Lawrence	8,878	100%	8,878
11560	Lattingtown	7,696	100%	7,696
11561	Long Beach	38,708	100%	38,708
11563	Lynbrook	22,899	100%	22,899
11565	Malverne	9,009	100%	9,009
11566	Merrick	34,741	100%	34,741
11568	Old Westbury	4,144	100%	4,144
11569	Point Lookout	945	100%	945
11570	Rockville Centre	28,908	100%	28,908
11572	Oceanside	30,436	100%	30,436
11575	Roosevelt	18,705	100%	18,705
11576	East Hills	12,281	100%	12,281
11577	Roslyn Heights	13,077	100%	13,077
11579	Sea Cliff	5,033	100%	5,033
11580	Valley Stream	43,092	100%	43,092
11581	Valley Stream	22,818	100%	22,818
11590	Westbury	47,599	100%	47,599
11596	Williston Park	10,516	100%	10,516
11598	Woodmere	13,599	100%	13,599
11709	Bayville	6,744	100%	6,744
11710	North Bellmore	34,834	100%	34,834
11714	Bethpage	22,695	100%	22,695
11732	Muttontown	3,228	100%	3,228
11735	East Farmingdale	32,028	46%	≈ 27,323
11753	Jericho	12,435	100%	12,435
11756	Levittown	42,665	100%	42,665
11758	Massapequa	54,375	99.9%	≈ 54,359
11762	Massapequa Park	22,487	100%	22,487
11765	Mill Neck	683	100%	683
11771	Oyster Bay Cove	10,908	100%	10,908
11783	Seaford	21,127	100%	21,127
11791	Syosset	25,520	100%	25,520
11793	Wantagh	32,349	100%	32,349
11797	Woodbury	9,402	100%	9,402
11801	Hicksville	41,585	100%	41,585
11803	Plainview	29,713	100%	29,713
11804	Old Bethpage	4,835	100%	4,835

ZIP codes shared with other counties

These 3 ZIP codes have part of their land in another county. The first figure is the share of their land in Nassau County; then, where the rest lies.

11001 (Floral Park): 88% here; 12% in Queens County.
11040 (North New Hyde Park): 97% here; 3.5% in Queens County.
11735 (East Farmingdale): 46% here; 54% in Suffolk County.

Cities and prefixes

By main city (the city, town or CDP each ZIP shares the most land with), the ones with the most are Uniondale (3), Lake Success (2), Valley Stream (2), Albertson (1), Atlantic Beach (1), and Baldwin (1); 66 places in all.

They start with 4 different three-digit prefixes, one per USPS sorting center: 110, 115, 117, and 118.

Neighboring counties

Each one with its ZIP codes. Those without a page of their own open in the tool.

Tools for this county

ZIP codes by county or city The same ZIP codes on an interactive map, with the list as CSV or to copy County map with cities Its cities, towns and CDPs with their population ZIP codes in a radius The ZIP codes within 10 miles of its center, or any distance you like

Sources

U.S. Census Bureau, 2020 ZCTA to County, ZCTA to Place and ZCTA to Census Tract Relationship Files (and the 2022 County Subdivision to ZCTA file for Connecticut). Public domain.
U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, table B01003 (population of each ZIP code, census tract and Connecticut town). Public domain.
U.S. Census Bureau, Vintage 2025 Population Estimates (county population) and 2025 Gazetteer Files (land area and interior point of each ZIP code). Public domain.
U.S. Census Bureau, Cartographic Boundary Files: ZCTAs 2020 and counties 2025, 1:500,000; county adjacency file 2025. Public domain.

How we count. ZIP codes here are the Census Bureau’s ZIP Code Tabulation Areas (ZCTAs), the areas it draws to match USPS ZIP codes; ZIPs with no area of their own (PO boxes, single buildings) aren’t included. A ZIP can cross county lines: “Land in the county” is the exact share of its land inside, from the Census relationship files. “Residents in the county” is the whole ZIP for those entirely inside; for shared ones it’s an estimate, spreading the people of each census tract over the land it shares with the ZIP. Population: ACS 2020–2024. Methodology.

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