Cities & Towns in Nassau County, NY

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 125 years ago in 1899. Its county seat is Mineola.

There are 5 city/town in Nassau County, NY. The largest city of Nassau County is Oyster Bay with a population of 296,592. Other cities include, Old Bethpage population 5,523, Old Westbury population 4,105, Oyster Bay Cove population 2,243 and Old Brookville population 2,174

Oyster Bay
Oyster Bay

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

Old Bethpage
Old Bethpage

Old Bethpage, Census-designated place in Nassau County, New York

Old Westbury
Old Westbury

Old Westbury, Village in Nassau County, New York, United States of America

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 Title Population
Old Bethpage Census-designated place in Nassau County, New York 5,523
Old Brookville City in Nassau County, New York, United States of America 2,174
Old Westbury Village in Nassau County, New York, United States of America 4,105
Oyster Bay Town on Long Island, New York, United States 296,592
Oyster Bay Cove City in Nassau County, New York, United States of America 2,243
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County Cities on Map (5)

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)