# List of places in Nassau County, New York

This is a list of places in Nassau County, New York. Nassau County, on Long Island, became a county in the U.S. state of New York in 1899 after separating from Queens County. Included in the list are two cities, three towns, 64 incorporated villages, and 63 unincorporated hamlets whose names are used for overlapping Census-designated places (CDPs). Also included in the list are five CDPs not generally included as hamlets, and two non-CDP hamlets (East Garden City and North Woodmere). The U.S. Postal Service has organized Nassau County into 111 different five-digit ZIP Codes served by 63 different post offices. Each post office has the same name as a city, hamlet or village, but the boundaries are seldom the same.
| Name | Status | Population (2010 census) | Population (2020 census) | Year incorporated | Town |
| Glen Cove | city | 26,964 | 28,365 | 1917 | formerly Oyster Bay |
| Long Beach | city | 33,275 | 35,029 | 1922 | formerly Hempstead |
| Town of Hempstead | town | 759,757 | 793,409 | 1644 | |
| Town of North Hempstead | town | 226,322 | 301,332 | 1784 | formerly Hempstead |
| Town of Oyster Bay | town | 293,214 | 237,639 | 1667 | |
| Atlantic Beach | village | 1,891 | - | 1962 | Hempstead |
| Bellerose | village | 1,193 | - | 1924 | Hempstead |
| Cedarhurst | village | 6,592 | 7,374 | 1910 | Hempstead |
| East Rockaway | village | 9,818 | 10,159 | 1910 | Hempstead |
| Floral Park | village | 15,863 | 16,172 | 1908 | Hempstead, North Hempstead |
| Freeport | village | 43,713 | 44,472 | 1892 | Hempstead |
| Garden City | village | 22,371 | 23,272 | 1919 | Hempstead, North Hempstead |
| Hempstead | village | 53,891 | 59,169 | 1853 | Hempstead |
| Hewlett Bay Park | village | 404 | - | 1928 | Hempstead |
| Hewlett Harbor | village | 1,263 | - | 1925 | Hempstead |
| Hewlett Neck | village | 445 | - | 1927 | Hempstead |
| Island Park | village | 4,655 | - | 1926 | Hempstead |
| Lawrence | village | 6,483 | 6,809 | 1897 | Hempstead |
| Lynbrook | village | 19,427 | 20,438 | 1911 | Hempstead |
| Malverne | village | 8,514 | 8,560 | 1921 | Hempstead |
| Rockville Centre | village | 24,023 | 26,016 | 1893 | Hempstead |
| South Floral Park | village | 1,764 | - | 1925 | Hempstead |
| Stewart Manor | village | 1,896 | - | 1927 | Hempstead |
| Valley Stream | village | 37,511 | 40,634 | 1925 | Hempstead |
| Woodsburgh | village | 778 | - | 1912 | Hempstead |
| Baldwin | hamlet | 24,033 | 33,919 | - | Hempstead |
| Barnum Island | hamlet | 2,414 | - | - | Hempstead |
| Bay Park | hamlet | 2,212 | - | - | Hempstead |
| Bellerose Terrace | hamlet | 2,198 | - | - | Hempstead |
| Bellmore | hamlet | 16,218 | 16,297 | - | Hempstead |
| East Atlantic Beach | hamlet | 2,049 | - | - | Hempstead |
| East Meadow | hamlet | 38,132 | 37,796 | - | Hempstead |
| Elmont | hamlet | 33,198 | 35,265 | - | Hempstead |
| Franklin Square | hamlet | 29,320 | 30,903 | - | Hempstead |
| Garden City South | hamlet | 4,024 | - | - | Hempstead |
| Harbor Isle | hamlet | 1,301 | - | - | Hempstead |
| Hewlett | hamlet | 6,819 | 7,262 | - | Hempstead |
| Inwood | hamlet | 9,792 | 11,340 | - | Hempstead |
| Levittown | hamlet | 51,881 | 51,758 | - | Hempstead |
| Lido Beach | hamlet | 2,897 | - | - | Hempstead |
| Merrick | hamlet | 20,130 | 22,040 | - | Hempstead |
| North Bellmore | hamlet | 19,941 | 20,583 | - | Hempstead |
| North Merrick | hamlet | 12,272 | 12,238 | - | Hempstead |
| North Valley Stream | hamlet | 16,628 | 18,197 | - | Hempstead |
| Oceanside | hamlet | 32,109 | 32,637 | - | Hempstead |
| Point Lookout | hamlet | 1,219 | - | - | Hempstead |
| Roosevelt | hamlet | 16,258 | 18,066 | - | Hempstead |
| Salisbury | hamlet | 12,093 | 12,618 | - | Hempstead |
| Seaford | hamlet | 15,294 | 15,251 | - | Hempstead |
| South Hempstead | hamlet | 3,243 | - | - | Hempstead |
| South Valley Stream | hamlet | 5,962 | 6,386 | - | Hempstead |
| Uniondale | hamlet | 24,759 | 32,473 | - | Hempstead |
| Wantagh | hamlet | 18,871 | 18,613 | - | Hempstead |
| West Hempstead | hamlet | 18,862 | 19,835 | - | Hempstead |
| Woodmere | hamlet | 17,554 | 18,669 | - | Hempstead |
| East Garden City | non-CDP hamlet | 6,208 | - | - | Hempstead |
| North Woodmere | non-CDP hamlet | - | - | - | Hempstead |
| Baldwin Harbor | CDP | 8,102 | - | - | Hempstead |
| Lakeview | CDP | 5,615 | 6,077 | - | Hempstead |
| Malverne Park Oaks | CDP | 505 | - | - | Hempstead |
| North Lynbrook | CDP | 793 | - | - | Hempstead |
| North Wantagh | CDP | 11,960 | 11,931 | - | Hempstead |
| Strathmore | non-CDP hamlet | - | - | - | North Hempstead |
| Baxter Estates | village | 999 | | 1931 | North Hempstead |
| East Hills | village | 6,955 | 7,284 | 1931 | North Hempstead, Oyster Bay |
| East Williston | village | 2,556 | - | 1926 | North Hempstead |
| Flower Hill | village | 4,665 | - | 1931 | North Hempstead |
| Great Neck | village | 9,989 | 11,145 | 1922 | North Hempstead |
| Great Neck Estates | village | 2,761 | - | 1911 | North Hempstead |
| Great Neck Plaza | village | 6,707 | 7,482 | 1930 | North Hempstead |
| Kensington | village | 1,161 | - | 1921 | North Hempstead |
| Kings Point | village | 5,005 | 5,619 | 1924 | North Hempstead |
| Lake Success | village | 2,897 | - | 1927 | North Hempstead |
| Manorhaven | village | 6,556 | 6,956 | 1930 | North Hempstead |
| Mineola | village | 18,799 | 20,800 | 1906 | North Hempstead, Hempstead |
| Munsey Park | village | 2,693 | - | 1930 | North Hempstead |
| New Hyde Park | village | 9,712 | 10,257 | 1927 | North Hempstead, Hempstead |
| North Hills | village | 5,075 | 5,464 | 1929 | North Hempstead |
| Old Westbury | village | 4,671 | - | 1924 | North Hempstead, Oyster Bay |
| Plandome | village | 1,349 | - | 1911 | North Hempstead |
| Plandome Heights | village | 1,005 | - | 1929 | North Hempstead |
| Plandome Manor | village | 872 | - | 1931 | North Hempstead |
| Port Washington North | village | 3,154 | - | 1932 | North Hempstead |
| Roslyn | village | 2,770 | - | 1932 | North Hempstead |
| Roslyn Estates | village | 1,251 | - | 1931 | North Hempstead |
| Roslyn Harbor | village | 1,051 | - | 1931 | North Hempstead, Oyster Bay |
| Russell Gardens | village | 945 | - | 1931 | North Hempstead |
| Saddle Rock | village | 830 | - | 1911 | North Hempstead |
| Sands Point | village | 2,675 | - | 1910 | North Hempstead |
| Thomaston | village | 2,617 | - | 1931 | North Hempstead |
| Westbury | village | 15,404 | 15,864 | 1932 | North Hempstead |
| Williston Park | village | 7,287 | 7,591 | 1926 | North Hempstead |
| Albertson | hamlet | 5,182 | 5,220 | - | North Hempstead |
| Carle Place | hamlet | 4,981 | 5,005 | - | North Hempstead |
| Garden City Park | hamlet | 7,806 | 7,985 | - | North Hempstead |
| Great Neck Gardens | hamlet | 1,186 | - | - | North Hempstead |
| Greenvale | hamlet | 1,904 | - | - | North Hempstead, Oyster Bay |
| Harbor Hills | hamlet | 575 | - | - | North Hempstead |
| Herricks | hamlet | 4,295 | - | - | North Hempstead |
| Manhasset | hamlet | 8,080 | 8,176 | - | North Hempstead |
| Manhasset Hills | hamlet | 3,592 | - | - | North Hempstead |
| New Cassel | hamlet | 14,059 | 14,199 | - | North Hempstead |
| North New Hyde Park | hamlet | 14,899 | 15,657 | - | North Hempstead |
| Port Washington | hamlet | 15,846 | 16,753 | - | North Hempstead |
| Roslyn Heights | hamlet | 6,577 | 6,747 | - | North Hempstead |
| Saddle Rock Estates | hamlet | 466 | - | - | North Hempstead |
| Searingtown | hamlet | 4,915 | 5,044 | - | North Hempstead |
| University Gardens | hamlet | 4,226 | - | - | North Hempstead |
| Bayville | village | 6,669 | 6,748 | 1919 | Oyster Bay |
| Brookville | village | 3,465 | - | 1931 | Oyster Bay |
| Centre Island | village | 410 | - | 1926 | Oyster Bay |
| Cove Neck | village | 286 | - | 1927 | Oyster Bay |
| Farmingdale | village | 8,189 | 8,466 | 1904 | Oyster Bay |
| Lattingtown | village | 1,739 | - | 1931 | Oyster Bay |
| Laurel Hollow | village | 1,952 | - | 1926 | Oyster Bay |
| Massapequa Park | village | 17,008 | 17,109 | 1931 | Oyster Bay |
| Matinecock | village | 810 | - | 1928 | Oyster Bay |
| Mill Neck | village | 997 | - | 1925 | Oyster Bay |
| Muttontown | village | 3,497 | - | 1931 | Oyster Bay |
| Old Brookville | village | 2,134 | 6,403 | 1929 | Oyster Bay |
| Oyster Bay Cove | village | 2,197 | - | 1931 | Oyster Bay |
| Sea Cliff | village | 4,995 | 5,062 | 1883 | Oyster Bay |
| Upper Brookville | village | 1,698 | - | 1932 | Oyster Bay |
| Bethpage | hamlet | 16,429 | 16,658 | - | Oyster Bay |
| East Massapequa | hamlet | 19,069 | 19,854 | - | Oyster Bay |
| East Norwich | hamlet | 2,709 | - | - | Oyster Bay |
| Glen Head | hamlet | 4,697 | - | - | Oyster Bay |
| Glenwood Landing | hamlet | 3,779 | - | - | Oyster Bay, North Hempsead |
| Hicksville | hamlet | 41,547 | 43,869 | - | Oyster Bay |
| Jericho | hamlet | 13,567 | 14,808 | - | Oyster Bay |
| Locust Valley | hamlet | 3,406 | | - | Oyster Bay |
| Massapequa | hamlet | 21,685 | 21,355 | - | Oyster Bay |
| North Massapequa | hamlet | 17,886 | 17,829 | - | Oyster Bay |
| Old Bethpage | hamlet | 5,523 | - | - | Oyster Bay |
| Oyster Bay | hamlet | 6,707 | 7,049 | - | Oyster Bay |
| Plainedge | hamlet | 8,817 | 9,517 | - | Oyster Bay |
| Plainview | hamlet | 26,217 | 27,100 | - | Oyster Bay |
| South Farmingdale | hamlet | 14,486 | 14,345 | - | Oyster Bay |
| Syosset | hamlet | 18,829 | 19,259 | - | Oyster Bay |
| Woodbury | hamlet | 8,907 | 9,335 | - | Oyster Bay |