Long Island New York Cities

City
Rank
County
2026 Pop. ↓
Hempstead1Nassau County796,269
Brookhaven2Suffolk County497,748
Islip3Suffolk County340,934
Oyster Bay4Nassau County301,359
North Hempstead5Nassau County239,359
Babylon6Suffolk County219,919
Huntington7Suffolk County206,155
Smithtown8Suffolk County116,900
Southampton9Suffolk County72,137
Hempstead10Nassau County60,048
Freeport11Nassau County44,148
Valley Stream12Nassau County40,348
Riverhead13Suffolk County36,495
Long Beach14Nassau County34,943
East Hampton15Suffolk County29,566
Glen Cove16Nassau County28,182
Lindenhurst17Suffolk County27,304
Rockville Centre18Nassau County25,749
Southold19Suffolk County24,326
Garden City20Nassau County23,012
Mineola21Nassau County21,509
Lynbrook22Nassau County20,952
Massapequa Park23Nassau County16,981
Floral Park24Nassau County16,079
Westbury25Nassau County16,012
Patchogue26Suffolk County12,519
Babylon27Suffolk County12,299
Woodbury28Nassau County12,153
Woodbury29Nassau County11,596
Lake Grove30Suffolk County11,199
Great Neck31Nassau County11,144
New Hyde Park32Nassau County10,222
East Rockaway33Nassau County10,099
Amityville34Suffolk County9,871
Farmingdale35Nassau County8,616
Malverne36Nassau County8,463
Port Jefferson37Suffolk County8,370
Great Neck Plaza38Nassau County7,990
Williston Park39Nassau County7,515
East Hills40Nassau County7,347
Northport41Suffolk County7,338
Cedarhurst42Nassau County7,334
Manorhaven43Nassau County7,152
Lawrence44Nassau County6,857
Bayville45Nassau County6,779
Kings Point46Nassau County5,733
North Hills47Nassau County5,482
Old Westbury48Nassau County5,259
Island Park49Nassau County5,092
Sea Cliff50Nassau County5,025
Flower Hill51Nassau County4,879
Southampton52Suffolk County4,772
Greenport53Suffolk County4,325
Islandia54Suffolk County3,757
Lloyd Harbor55Suffolk County3,591
Muttontown56Nassau County3,583
Shelter Island57Suffolk County3,367
Brightwaters58Suffolk County3,212
Great Neck Estates59Nassau County3,188
Port Washington North60Nassau County3,151
Roslyn61Nassau County3,057
Brookville62Nassau County3,054
Sag Harbor63Suffolk County2,860
Lake Success64Nassau County2,854
Munsey Park65Nassau County2,784
Sands Point66Nassau County2,776
Thomaston67Nassau County2,773
East Williston68Nassau County2,612
Greenport69Suffolk County2,590
Oyster Bay Cove70Nassau County2,291
Westhampton Beach71Suffolk County2,286
Bellport72Suffolk County2,226
Old Brookville73Nassau County2,103
Laurel Hollow74Nassau County1,952
Stewart Manor75Nassau County1,921
Lattingtown76Nassau County1,878
South Floral Park77Nassau County1,779
Upper Brookville78Nassau County1,779
Village of the Branch79Suffolk County1,764
Lawrence80Nassau County1,748
Atlantic Beach81Nassau County1,726
Quogue82Suffolk County1,719
Nissequogue83Suffolk County1,645
East Hampton84Suffolk County1,567
Plandome85Nassau County1,493
Head of the Harbor86Suffolk County1,482
Huntington Bay87Suffolk County1,465
Roslyn Estates88Nassau County1,339
Hewlett Harbor89Nassau County1,331
Kensington90Nassau County1,279
North Haven91Suffolk County1,229
Roslyn Harbor92Nassau County1,123
Plandome Heights93Nassau County1,019
Saddle Rock94Nassau County1,014
Baxter Estates95Nassau County1,012
Mill Neck96Nassau County1,008
Old Field97Suffolk County952
Poquott98Suffolk County933
Russell Gardens99Nassau County898
Woodsburgh100Nassau County885
Matinecock101Nassau County853
Plandome Manor102Nassau County829
Belle Terre103Suffolk County798
Baldwin104Nassau County766
Sagaponack105Suffolk County755
Asharoken106Suffolk County628
Hewlett Neck107Nassau County578
Shoreham108Suffolk County531
Hewlett Bay Park109Nassau County481
Centre Island110Nassau County393
Cove Neck111Nassau County292
Ocean Beach112Suffolk County176
West Hampton Dunes113Suffolk County121
Saltaire114Suffolk County111
Dering Harbor115Suffolk County36

About Long Island New York

Suffolk County and Nassau County are the counties generally considered part of Long Island New York.

Sources

  1. US Census: 2025 Gazetteer Files
  2. City and Town Population Totals: 2020-2024