Population on Long Island, 2010 Census
This table includes the total population for communities, towns and counties on Long Island, for the census years of 1990, 2000 and 2010. The source for this data is the United States Census Bureau. Click here for an accompanying map for this data.
| Location | Year 1990 | Year 2000 | Year 2010 | Percent change |
| New York State | 17,990,455 | 18,976,457 | 19,378,102 | 2.1 |
| Suffolk County | 1,321,864 | 1,419,369 | 1,493,350 | 5.2 |
| Nassau County | 1,287,348 | 1,334,544 | 1,339,532 | 0.4 |
| Hempstead town | 725,639 | 755,924 | 759,757 | 0.5 |
| Brookhaven town | 407,779 | 448,248 | 486,040 | 8.4 |
| Islip town | 299,587 | 322,612 | 335,543 | 4.0 |
| Oyster Bay town | 292,657 | 293,925 | 293,214 | -0.2 |
| North Hempstead town | 211,393 | 222,611 | 226,322 | 1.7 |
| Babylon town | 202,889 | 211,792 | 213,603 | 0.9 |
| Huntington town | 191,474 | 195,289 | 203,264 | 4.1 |
| Smithtown town | 113,406 | 115,715 | 117,801 | 1.8 |
| Hempstead Village | 49,453 | 56,554 | 53,891 | -4.7 |
| Southampton town | 44,976 | 54,712 | 56,790 | 3.8 |
| Brentwood | 45,218 | 53,917 | 60,664 | 12.5 |
| Levittown | 53,286 | 53,067 | 51,881 | -2.2 |
| Freeport Village | 39,894 | 43,783 | 42,860 | -2.1 |
| West Babylon | 42,410 | 43,452 | 43,213 | -0.6 |
| Hicksville | 40,174 | 41,260 | 41,547 | 0.7 |
| East Meadow | 36,909 | 37,461 | 38,132 | 1.8 |
| Valley Stream Village | 33,946 | 36,368 | 37,511 | 3.1 |
| Commack | 36,124 | 36,367 | 36,124 | -0.7 |
| Long Beach city | 33,510 | 35,462 | 33,275 | -6.2 |
| Long Beach city | 33,510 | 35,462 | 33,275 | -6.2 |
| Coram | 30,111 | 34,923 | 39,113 | 12.0 |
| Oceanside | 32,423 | 32,733 | 32,109 | -1.9 |
| Elmont | 28,612 | 32,657 | 33,198 | 1.7 |
| Central Islip | 26,028 | 31,950 | 34,450 | 7.8 |
| Huntington Station | 28,247 | 29,910 | 33,029 | 10.4 |
| Franklin Square | 28,205 | 29,342 | 29,320 | -0.1 |
| West Islip | 28,419 | 28,907 | 28,335 | -2.0 |
| Deer Park | 28,840 | 28,316 | 27,745 | -2.0 |
| Lindenhurst Village | 26,879 | 27,819 | 27,253 | -2.0 |
| Riverhead town | 23,011 | 27,680 | 33,506 | 21.0 |
| Holbrook | 25,273 | 27,512 | 27,195 | -1.2 |
| Centereach | 26,720 | 27,285 | 31,578 | 15.7 |
| Smithtown | 25,638 | 26,901 | 26,470 | -1.6 |
| Glen Cove city | 24,149 | 26,622 | 26,964 | 1.3 |
| Glen Cove city | 24,149 | 26,622 | 26,964 | 1.3 |
| Dix Hills | 25,849 | 26,024 | 26,892 | 3.3 |
| Plainview | 26,207 | 25,637 | 26,217 | 2.3 |
| Shirley | 22,936 | 25,395 | 27,854 | 9.7 |
| Rockville Centre Village | 24,727 | 24,568 | 24,023 | -2.2 |
| Bay Shore | 21,279 | 23,852 | 26,337 | 10.4 |
| Baldwin | 22,719 | 23,455 | 24,033 | 2.5 |
| Uniondale | 20,328 | 23,011 | 24,759 | 7.6 |
| Merrick | 23,042 | 22,764 | 22,097 | -2.9 |
| Massapequa | 22,018 | 22,652 | 21,685 | -4.3 |
| Medford | 21,274 | 21,985 | 24,142 | 9.8 |
| Copiague | 20,769 | 21,922 | 22,993 | 4.9 |
| Selden | 20,608 | 21,861 | 19,851 | -9.2 |
| Garden City Village | 21,686 | 21,672 | 22,371 | 3.2 |
| East Northport | 20,411 | 20,845 | 20,217 | -3.0 |
| East Patchogue | 20,195 | 20,824 | 22,469 | 7.9 |
| Southold town | 19,836 | 20,599 | 21,968 | 6.6 |
| Islip | 18,924 | 20,575 | 18,689 | -9.2 |
| Hauppauge | 19,750 | 20,100 | 20,882 | 3.9 |
| North Bellmore | 19,707 | 20,079 | 19,941 | -0.7 |
| Ronkonkoma | 20,391 | 20,029 | 19,082 | -4.7 |
| Lynbrook Village | 19,208 | 19,911 | 19,427 | -2.4 |
| East Hampton town | 16,132 | 19,719 | 21,457 | 8.8 |
| Lake Ronkonkoma | 18,997 | 19,701 | 20,155 | 2.3 |
| East Massapequa | 19,550 | 19,565 | 19,069 | -2.5 |
| Mineola Village | 18,994 | 19,234 | 18,799 | -2.3 |
| North Massapequa | 19,365 | 19,152 | 17,886 | -6.6 |
| Wantagh | 18,567 | 18,971 | 18,871 | -0.5 |
| West Hempstead | 17,689 | 18,713 | 18,862 | 0.8 |
| Syosset | 18,967 | 18,544 | 18,829 | 1.5 |
| Huntington | 18,243 | 18,403 | 18,046 | -1.9 |
| North Babylon | 18,081 | 17,877 | 17,509 | -2.1 |
| Massapequa Park Village | 18,044 | 17,499 | 17,008 | -2.8 |
| Holtsville | 14,972 | 17,006 | 19,714 | 15.9 |
| Sayville | 16,550 | 16,735 | 16,853 | 0.7 |
| North Amityville | 13,849 | 16,572 | 17,862 | 7.8 |
| Bethpage | 15,761 | 16,543 | 16,429 | -0.7 |
| Farmingville | 14,842 | 16,458 | 15,481 | -5.9 |
| Woodmere | 15,578 | 16,447 | 17,121 | 4.1 |
| Bellmore | 16,438 | 16,441 | 16,218 | -1.4 |
| Kings Park | 17,773 | 16,146 | 17,282 | 7.0 |
| Floral Park Village | 15,947 | 15,967 | 15,863 | -0.7 |
| Setauket-East Setauket | 13,634 | 15,931 | 15,477 | -2.8 |
| Roosevelt | 15,030 | 15,854 | 16,258 | 2.5 |
| Seaford | 15,597 | 15,791 | 15,294 | -3.1 |
| North Valley Stream | 14,574 | 15,789 | 16,628 | 5.3 |
| Mastic | 13,778 | 15,436 | 15,481 | 0.3 |
| Port Washington | 15,387 | 15,215 | 15,846 | 4.1 |
| South Farmingdale | 15,377 | 15,061 | 14,486 | -3.8 |
| North Bay Shore | 12,799 | 14,992 | 18,944 | 26.4 |
| North New Hyde Park | 14,359 | 14,542 | 14,899 | 2.5 |
| Melville | 12,586 | 14,533 | 18,985 | 30.6 |
| Westbury Village | 13,060 | 14,263 | 15,146 | 6.2 |
| East Islip | 14,325 | 14,078 | 14,475 | 2.8 |
| Stony Brook | 13,726 | 13,727 | 13,740 | 0.1 |
| Ridge | 11,734 | 13,380 | 13,336 | -0.3 |
| New Cassel | 10,257 | 13,298 | 14,059 | 5.7 |
| Greenlawn | 13,208 | 13,286 | 13,742 | 3.4 |
| St. James | 12,703 | 13,268 | 13,338 | 0.5 |
| Jericho | 13,141 | 13,045 | 13,567 | 4.0 |
| Babylon Village | 12,249 | 12,615 | 12,166 | -3.6 |
| Salisbury | 12,226 | 12,341 | 12,093 | -2.0 |
| Hampton Bays | 7,893 | 12,236 | 13,603 | 11.2 |