Nassau County, New York

Nassau County, New York, has 1,398,939 residents (July 2025 estimate). Its county seat is Mineola. It uses Eastern Time and covers 285 sq mi (737 km²) of land.

New YorkBuffaloYonkers
Nassau County in New York
Bronx CountyQueens CountyHempsteadFreeportHicksville
Nassau County and its neighbors (simplified outlines). Open in OpenStreetMap ↗
Resident population, July 2025
1,398,939
Land area
285 sq mi (737 km²)
County seat or government
Mineola
Time zone
Eastern TimeUTC-05:00 in January; UTC-04:00 in July
Median household income
$146,202 ± $1,472
Median home value
$684,700 ± $2,833
Median rent, with utilities
$2,252 ± $41
Homes lived in by their owners
81.9% ± 0.5 points
County type
County
Metro or micro area
New York-Newark-Jersey City, NY-NJ metro areaCentral county
Water area
169 sq mi (437 km²)
State
New York
County code (FIPS)
36059
Coordinates (central point)
40.729612, -73.589414

These coordinates mark a central point for the area, not a street address. Income, home value, rent and homes lived in by their owners: U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, ± margin at 90% confidence; checked on October 13, 2026.

Time zones in Nassau County

Time zoneLocal time and UTC offsetNext clock change
Eastern TimeAmerica/New_YorkUTC-05:00 in January; UTC-04:00 in July. Enable JavaScript for the live clock.Enable JavaScript for upcoming changes.

Near a time-zone line, check where you are with the time-zone finder. Your phone’s setting can differ.

ZIP Code areas, largest first

  1. 1155060,960 people
  2. 1175854,375 people
  3. 1159047,599 people
  4. 1100345,174 people
  5. 1152044,910 people
  6. 1158043,092 people
  7. 1175642,665 people
  8. 1104041,988 people
  9. 1180141,585 people
  10. 1156138,708 people
  11. 1155436,821 people
  12. 1151035,701 people
All 70
  1. 1171034,834 people
  2. 1156634,741 people
  3. 1105032,794 people
  4. 1179332,349 people
  5. 1173532,028 people
  6. 1157230,436 people
  7. 1180329,713 people
  8. 1154228,965 people
  9. 1157028,908 people
  10. 1153027,939 people
  11. 1155327,875 people
  12. 1101025,604 people
  13. 1179125,520 people
  14. 1100125,493 people
  15. 1155225,174 people
  16. 1156322,899 people
  17. 1158122,818 people
  18. 1171422,695 people
  19. 1176222,487 people
  20. 1150121,641 people
  21. 1178321,127 people
  22. 1102119,783 people
  23. 1157518,705 people
  24. 1103018,051 people
  25. 1159813,599 people
  26. 1157713,077 people
  27. 1175312,435 people
  28. 1157612,281 people
  29. 1154512,172 people
  30. 1177110,908 people
  31. 1159610,516 people
  32. 1109610,428 people
  33. 1151810,149 people
  34. 110239,630 people
  35. 117979,402 people
  36. 110249,155 people
  37. 115169,112 people
  38. 115659,009 people
  39. 115598,878 people
  40. 115578,504 people
  41. 115588,454 people
  42. 115607,696 people
  43. 117096,744 people
  44. 115076,736 people
  45. 110205,676 people
  46. 115795,033 people
  47. 118044,835 people
  48. 115144,544 people
  49. 115684,144 people
  50. 117323,228 people
  51. 115492,359 people
  52. 115482,261 people
  53. 115091,790 people
  54. 11569945 people
  55. 11547706 people
  56. 11765683 people
  57. 11042141 people
  58. 115560 people

70 ZIP Code areas overlap Nassau County. People counts are 2020–2024 estimates for each whole ZIP area. Mailing ZIPs can differ; check an address with USPS ZIP Code Lookup.

Official county information

Nassau County government website ↗ is the next stop for county offices, tax, voting, jury and records information. A geographic lookup cannot determine eligibility, tax liability or a court obligation.

Towns in Nassau County, largest first

  1. Town of Hempstead790,202 people
  2. Town of Oyster Bay299,509 people
  3. Town of North Hempstead237,012 people

People counts are American Community Survey 2020–2024 5-year estimates. All towns in New York, by county

School districts in Nassau County, largest first

  1. Sewanhaka Central High School District123,365 people
  2. Bellmore-Merrick Central High School District70,537 people
  3. Valley Stream Central High School District64,691 people
  4. Elmont Union Free School District53,895 people
  5. East Meadow Union Free School District51,306 people
  6. Great Neck Union Free School District47,994 people
  7. Massapequa Union Free School District47,425 people
  8. Hempstead Union Free School District46,807 people
  9. Uniondale Union Free School District46,421 people
  10. Levittown Union Free School District46,158 people
  11. Hicksville Union Free School District41,214 people
  12. Freeport Union Free School District40,154 people
All 58
  1. Farmingdale Union Free School District39,774 people
  2. Long Beach City School District39,653 people
  3. Lawrence Union Free School District39,161 people
  4. Baldwin Union Free School District36,257 people
  5. Oceanside Union Free School District35,720 people
  6. Syosset Central School District35,701 people
  7. Port Washington Union Free School District33,435 people
  8. Plainview-Old Bethpage Central School District29,647 people
  9. Valley Stream Union Free School District 1329,369 people
  10. Amityville Union Free School District28,342 people
  11. Glen Cove City School District28,112 people
  12. Westbury Union Free School District27,146 people
  13. Mineola Union Free School District27,097 people
  14. Franklin Square Union Free School District26,945 people
  15. North Bellmore Union Free School District26,918 people
  16. Rockville Centre Union Free School District24,193 people
  17. Herricks Union Free School District23,489 people
  18. Garden City Union Free School District22,941 people
  19. New Hyde Park-Garden City Park Union Free School District22,728 people
  20. Roosevelt Union Free School District20,814 people
  21. Hewlett-Woodmere Union Free School District19,966 people
  22. Bethpage Union Free School District19,846 people
  23. Floral Park-Bellerose Union Free School District19,797 people
  24. Plainedge Union Free School District19,076 people
  25. Valley Stream Union Free School District 3018,940 people
  26. West Hempstead Union Free School District18,694 people
  27. Lynbrook Union Free School District18,177 people
  28. Wantagh Union Free School District17,763 people
  29. Roslyn Union Free School District17,663 people
  30. Merrick Union Free School District17,453 people
  31. Locust Valley Central School District17,112 people
  32. Manhasset Union Free School District16,705 people
  33. North Shore Central School District16,445 people
  34. Valley Stream Union Free School District 2416,382 people
  35. Seaford Union Free School District16,126 people
  36. Malverne Union Free School District15,945 people
  37. Jericho Union Free School District15,751 people
  38. Island Trees Union Free School District15,613 people
  39. North Merrick Union Free School District14,183 people
  40. Oyster Bay-East Norwich Central School District13,656 people
  41. Bellmore Union Free School District11,983 people
  42. Carle Place Union Free School District9,795 people
  43. East Williston Union Free School District9,479 people
  44. East Rockaway Union Free School District9,284 people
  45. Island Park Union Free School District8,454 people
  46. Cold Spring Harbor Central School District8,386 people

Districts with land in the county; a district can cross county lines. People counts are American Community Survey 2020–2024 5-year estimates. A district boundary doesn’t decide which school a student attends.

Cities, towns and communities, largest first

These areas overlap the mapped boundary; an overlap does not mean that every address belongs to both.

  1. Hempstead, New York (village)58,801 people
  2. Levittown, New York (CDP)51,904 people
  3. Freeport, New York (village)44,088 people
  4. Hicksville, New York (CDP)43,780 people
  5. Valley Stream, New York (village)40,315 people
  6. East Meadow, New York (CDP)36,821 people
  7. Elmont, New York (CDP)36,518 people
  8. Baldwin, New York (CDP)34,994 people
  9. Long Beach, New York (city)34,756 people
  10. Uniondale, New York (CDP)33,148 people
  11. Oceanside, New York (CDP)31,639 people
  12. Franklin Square, New York (CDP)30,897 people
All 133
  1. Glen Cove, New York (city)28,112 people
  2. Plainview, New York (CDP)25,982 people
  3. Rockville Centre, New York (village)25,765 people
  4. Garden City, New York (village)22,941 people
  5. Merrick, New York (CDP)21,744 people
  6. Massapequa, New York (CDP)21,389 people
  7. Mineola, New York (village)21,211 people
  8. North Bellmore, New York (CDP)20,689 people
  9. West Hempstead, New York (CDP)20,648 people
  10. East Massapequa, New York (CDP)20,377 people
  11. Lynbrook, New York (village)20,325 people
  12. Roosevelt, New York (CDP)18,885 people
  13. Syosset, New York (CDP)18,433 people
  14. Wantagh, New York (CDP)18,365 people
  15. Woodmere, New York (CDP)18,061 people
  16. Port Washington, New York (CDP)18,004 people
  17. North Massapequa, New York (CDP)17,877 people
  18. North Valley Stream, New York (CDP)17,825 people

See all 133 cities, towns and communities in Nassau County, largest first

Bordering areas, nearest first

Distances are straight lines between map points.

  1. Queens County, New York14 mi west
  2. Bronx County, New York16 mi northwest
  3. Westchester County, New York30 mi north
  4. Western Connecticut Planning Region, Connecticut39 mi north
  5. Suffolk County, New York49 mi east

Before using this answer on a form

Use a precise point for address-level questions. A device accuracy circle can cross a boundary; confirm tax, voting or jury details with the responsible office.

Find the county where you are now, check its ZIP area, or check the time zone where you are.

See this county on Census.gov ↗

Areas that only touch the edge

These areas meet the boundary only along a sliver. Most addresses here are not in them; for an address near the line, check with the county.