Nassau County, New York Zip Codes
| Hempstead | 60,668 |
| Massapequa | 54,201 |
| Westbury | 47,951 |
| Elmont | 47,515 |
| Freeport | 44,876 |
| Valley Stream | 43,396 |
| Levittown | 42,459 |
| New Hyde Park | 42,140 |
| Hicksville | 41,967 |
| Long Beach | 38,755 |
| East Meadow | 36,856 |
| Baldwin | 35,070 |
| Bellmore | 34,950 |
| Merrick | 33,976 |
| Port Washington | 31,920 |
| Wantagh | 30,865 |
| Plainview | 30,298 |
| Oceanside | 29,961 |
| Glen Cove | 29,095 |
| Rockville Centre | 28,262 |
| Garden City | 28,207 |
| Uniondale | 27,886 |
| Floral Park | 26,138 |
| West Hempstead | 26,043 |
| Franklin Square | 25,751 |
| Syosset | 25,631 |
| Valley Stream | 22,770 |
| Bethpage | 22,444 |
| Massapequa Park | 22,440 |
| Lynbrook | 22,055 |
| Seaford | 21,916 |
| Mineola | 21,434 |
| Great Neck | 19,623 |
| Roosevelt | 19,102 |
| Manhasset | 17,168 |
| Woodmere | 14,531 |
| Jericho | 13,087 |
| Roslyn | 12,506 |
| Roslyn Heights | 12,399 |
| Glen Head | 12,068 |
| Williston Park | 10,520 |
| East Rockaway | 10,294 |
| Oyster Bay | 10,068 |
| Great Neck | 9,699 |
| Inwood | 9,567 |
| Woodbury | 9,203 |
| Great Neck | 9,105 |
| Malverne | 9,013 |
| Lawrence | 8,732 |
| Island Park | 8,660 |
| Cedarhurst | 8,450 |
| Hewlett | 8,290 |
| Albertson | 7,111 |
| Locust Valley | 7,043 |
| Bayville | 6,763 |
| Great Neck | 6,145 |
| Sea Cliff | 5,062 |
| Carle Place | 5,040 |
| Old Bethpage | 4,443 |
| Old Westbury | 4,272 |
| East Norwich | 3,546 |
| Hempstead | 2,508 |
| Greenvale | 2,230 |
| Atlantic Beach | 1,682 |
| Point Lookout | 1,110 |
| Mill Neck | 708 |
| Glenwood Landing | 585 |
| New Hyde Park | 317 |
| Uniondale | 0 |
- Population is the most recent figure from the U.S. Census Bureau's 2022 American Community Survey (ACS) 5-Year Estimates.