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Largest Cities in Nassau County, NY by Population

Nassau County, county in New York, United States. As of 2020 county had an estimated population of 1,351,334 inhabitants. The county was created 127 years ago in 1899. Its county seat is Mineola.

Hempstead
Hempstead

Hempstead, Located in Nassau County, New York, this hamlet and village is a major commercial and transportation hub.

Oyster Bay
Oyster Bay

Oyster Bay, Town on Long Island, New York, United States

Freeport
Freeport

Freeport, The county seat of Stephenson County, Illinois.

Nassau County, located on Long Island directly east of New York City, contains some of the most prominent cities and towns in the state of New York. With famous beaches, historic sites, and sprawling suburbs, Nassau County is home to over 1.3 million residents. In this post, we’ll highlight some of the top cities that make up this culturally diverse county.

The city of Long Beach sits on a barrier island bordering the Atlantic Ocean and boasts over 35,000 residents. Just east, the city of Glen Cove contains a quaint, old-world downtown right along the Long Island Sound. Hempstead, with over 700,000 residents, is the largest city in the county and acts as an urban hub. Further east, Oyster Bay is a historic hamlet with well-preserved colonial sites. And no discussion of Nassau County would be complete without mentioning its county seat, Mineola, home to the county government offices and a variety of restaurants and shops.

Nassau County offers a mix of beachside living, suburban sprawl, and historic villages. Join me as I dive deeper into these cities and others that make Nassau County a dynamic place to live and visit on Long Island.

All Nassau County Cities (Aphebetical)

List of cities, towns, neighborhoods & other populated places in Nassau County.

A B C D E F G H I J K L M N O P Q R S T U V W X Y Z all
City Name Population
Albertson 5,182
Atlantic Beach 1,894
Baldwin Harbor 8,102
Barnum Island 2,414
Bay Park 2,212
Bayville 6,695
Bellerose 1,155
Bellerose Terrace 2,198
Bethpage 16,429
Carle Place 4,981
Cedarhurst 6,597
East Atlantic Beach 2,049
East Hills 7,233
East Massapequa 19,069
East Meadow 38,132
East Norwich 2,709
East Rockaway 9,781
East Williston 2,535
Elmont 33,198
Farmingdale 8,981
Floral Park 15,735
Flower Hill 4,903
Franklin Square 29,320
Freeport 42,705
Garden City 22,224
Garden City Park 7,806
Garden City South 4,024
Glen Cove 27,005
Glen Head 4,697
Glenwood Landing 3,779
Great Neck 10,162
Great Neck Estates 2,867
Great Neck Gardens 1,186
Great Neck Plaza 7,006
Greenvale 1,094
Harbor Isle 1,301
Hempstead 764,055
Herricks 4,295
Hewlett 6,819
Hewlett Harbor 1,267
Hicksville 41,547
Island Park 4,814
Kings Point 5,288
Lake Success 3,132
Lattingtown 1,756
Laurel Hollow 2,027
Lawrence 6,535
Lido Beach 2,897
Locust Valley 3,406
Long Beach 33,303
Lynbrook 19,291
Malverne 8,459
Manhasset 8,080
Manorhaven 6,744
Massapequa 21,685
Massapequa Park 17,034
Merrick 22,097
Mineola 19,546
Munsey Park 2,673
Muttontown 3,673
New Cassel 14,059
New Hyde Park 9,744
North Bellmore 19,941
North Hills 5,934
North Massapequa 17,886
North Merrick 12,272
North New Hyde Park 14,899
North Valley Stream 16,628
North Wantagh 11,960
Old Bethpage 5,523
Old Brookville 2,174
Old Westbury 4,105
Oyster Bay 296,592
Oyster Bay Cove 2,243
Plainedge 8,817
Plainview 26,217
Plandome 1,466
Point Lookout 1,219
Port Washington 15,846
Port Washington North 3,160
Rockville Centre 24,398
Roosevelt 16,258
Roslyn 2,915
Roslyn Estates 1,208
Roslyn Harbor 1,100
Roslyn Heights 6,577
Sands Point 2,802
Sea Cliff 5,056
Searingtown 4,915
South Farmingdale 14,486
South Floral Park 1,782
South Hempstead 3,243
South Valley Stream 5,962
Stewart Manor 1,947
Syosset 18,829
Thomaston 2,602
Uniondale 24,759
University Gardens 4,226
Upper Brookville 1,738
Valley Stream 37,196
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County Cities on Map (100)

New York Counties (61)

Queens County (2,225,821) New York County (1,611,989) Suffolk County (1,474,273) Bronx County (1,401,142) Nassau County (1,351,334) Westchester County (965,802) Erie County (917,241) Monroe County (740,900) Richmond County (475,327) Onondaga County (459,214) Orange County (385,234) Rockland County (326,225) Albany County (303,654) Dutchess County (293,293) Saratoga County (230,298) Oneida County (227,346) Niagara County (208,396) Broome County (189,420) Ulster County (177,716) Rensselaer County (158,108) Schenectady County (155,358) Chautauqua County (126,032) Oswego County (116,346) St. Lawrence County (111,007) Ontario County (110,091) Jefferson County (108,095) Tompkins County (101,058) Putnam County (98,532) Steuben County (94,657) Wayne County (89,339) Chemung County (82,622) Clinton County (79,778) Cayuga County (76,029) Cattaraugus County (75,863) Sullivan County (75,802) Madison County (70,478) Warren County (63,756) Livingston County (62,398) Herkimer County (60,945) Washington County (60,606) Columbia County (59,534) Otsego County (58,701) Genesee County (56,994) Fulton County (52,812) Franklin County (49,965) Montgomery County (49,170) Tioga County (47,904) Greene County (47,177) Cortland County (47,173) Chenango County (46,730) Allegany County (45,587) Delaware County (43,938) Orleans County (39,978) Wyoming County (39,465) Essex County (36,891) Seneca County (33,991) Schoharie County (31,132) Lewis County (26,187) Yates County (24,780) Schuyler County (17,685) Hamilton County (4,345)