County · New York
Nassau County, New York
Nassau County, New York. Nassau County had 1,398,939 residents in 2025 by the Census Bureau's estimate, up 0.2% since 2020, while New York shrank 1.0%. It holds 136 places (66 cities, villages and boroughs, 3 towns and townships and 67 census-designated) and 286 census tracts. GEOID 36059.
Nassau County is one of the 22 counties of the New York-Newark-Jersey City, NY-NJ metropolitan statistical area (the Census Bureau's July 2023 delineation).
Residents, July 2025 estimate
1,398,939
Census Bureau estimate (no margin published)
2020 Census count: 1,395,774 · ACS 2020-2024: 1,389,591
Median household income
$146,202
±$1,472 (90% margin)
New York: $85,974
Median home value
$684,700
±$2,833 (90% margin)
New York: $423,800
Median gross rent
$2,252
±$41 (90% margin)
New York: $1,621
How many people live in Nassau County, and is it growing?
The 2020 Census counted 1,395,774 residents in Nassau County. The Census Bureau estimates 1,398,939 for July 1, 2025, up 0.2% since 2020, while New York shrank 1.0%. The 2020-2024 American Community Survey puts the population at 1,389,591 over 285 square miles of land.
| Measure | Nassau County | New York | Change since 2015-2019 |
|---|---|---|---|
| Total population | 1,389,591 | 19,852,366 | +33,082 |
| Households | 458,166±1,227 | 7,722,646 | +11,189 |
| Average household size | 2.99±0.01 | 2.49 | no clear change |
| Housing units | 479,044±353 | 8,585,241 | +6,472 |
Nassau County's population since 2000
From 1,334,544 in 2000 to 1,398,939 in 2025: up 4.8%. The 2000, 2010 and 2020 figures are census counts. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); PEP Vintage 2025 (CO-EST2025); 2020 Census · Check it at data.census.gov
What cities and towns are in Nassau County?
Nassau County holds 136 places: 66 cities, villages and boroughs (incorporated places), 3 towns and townships (county subdivisions with their own government) and 67 census-designated places. The largest is Town of Hempstead with 795,734 residents (2025 estimate). Places that cross a county line are listed with the share of their 2020 residents who live in this county.
| Hempstead (town) | 793,409 | $141,243 |
|---|---|---|
| Oyster Bay (town) | 301,332 | $160,126 |
| North Hempstead (town) | 237,639 | $158,158 |
| Hempstead | 59,169 | $90,420 |
| Levittown | 51,758 | $146,068 |
| Freeport | 44,472 | $120,625 |
| Hicksville | 43,869 | $144,471 |
| Valley Stream | 40,634 | $133,190 |
| East Meadow | 37,796 | $133,971 |
| Elmont | 35,265 | $114,217 |
| Long Beach | 35,029 | $140,739 |
| Baldwin | 33,919 | $145,472 |
| Oceanside | 32,637 | $149,560 |
| Uniondale | 32,473 | $124,684 |
| Franklin Square | 30,903 | $143,263 |
| Glen Cove | 28,365 | $92,064 |
| Plainview | 27,100 | $189,906 |
| Rockville Centre | 26,016 | $151,938 |
| Garden City | 23,272 | $244,152 |
| Merrick | 22,040 | $185,740 |
| Massapequa | 21,355 | $181,846 |
| Mineola | 20,800 | $137,739 |
| North Bellmore | 20,583 | $181,662 |
| Lynbrook | 20,438 | $136,696 |
| East Massapequa | 19,854 | $146,454 |
| West Hempstead | 19,835 | $164,127 |
| Syosset | 19,259 | $187,273 |
| Woodmere | 18,669 | $172,537 |
| Wantagh | 18,613 | $179,362 |
| North Valley Stream | 18,197 | $142,733 |
| Roosevelt | 18,066 | $135,069 |
| North Massapequa | 17,829 | $148,654 |
| Massapequa Park | 17,109 | $171,953 |
| Port Washington | 16,753 | $170,127 |
| Bethpage | 16,658 | $122,257 |
| Bellmore | 16,297 | $161,674 |
| Floral Park | 16,172 | $150,084 |
| Westbury | 15,864 | $145,185 |
| North New Hyde Park | 15,657 | $172,440 |
| Seaford | 15,251 | $172,557 |
| Jericho | 14,808 | $167,935 |
| South Farmingdale | 14,345 | $155,072 |
| New Cassel | 14,199 | $155,443 |
| Salisbury | 12,618 | $162,478 |
| North Merrick | 12,238 | $161,554 |
| North Wantagh | 11,931 | $156,738 |
| Inwood | 11,340 | $94,342 |
| Great Neck | 11,145 | $137,981 |
| New Hyde Park | 10,257 | $142,927 |
| East Rockaway | 10,159 | $124,929 |
| Plainedge | 9,517 | $158,214 |
| Woodbury, Nassau County | 9,335 | $191,321 |
| Malverne | 8,560 | $149,489 |
| Farmingdale | 8,466 | $122,980 |
| Manhasset | 8,176 | $165,932 |
| Garden City Park | 7,985 | $149,800 |
| Williston Park | 7,591 | $156,382 |
| Great Neck Plaza | 7,482 | $92,474 |
| Cedarhurst | 7,374 | $101,572 |
| East Hills | 7,284 | $250,000 or more |
| Hewlett | 7,262 | $140,765 |
| Oyster Bay | 7,049 | $111,264 |
| Manorhaven | 6,956 | $105,486 |
| Lawrence | 6,809 | $170,000 |
| Bayville | 6,748 | $149,191 |
| Roslyn Heights | 6,747 | $175,263 |
| Old Bethpage | 6,403 | $195,202 |
| South Valley Stream | 6,386 | $145,000 |
| Lakeview | 6,077 | $118,777 |
| Kings Point | 5,619 | $211,299 |
| North Hills | 5,464 | $173,315 |
| Albertson | 5,220 | $132,955 |
| Sea Cliff | 5,062 | $193,590 |
| Searingtown | 5,044 | $212,344 |
| Carle Place | 5,005 | $145,500 |
| Island Park | 4,928 | $104,926 |
| Glen Head | 4,837 | $138,465 |
| Flower Hill | 4,794 | $250,000 or more |
| Herricks | 4,398 | $135,208 |
| University Gardens | 4,358 | $101,786 |
| Old Westbury | 4,289 | $250,000 or more |
| Garden City South | 4,119 | $136,164 |
| Glenwood Landing | 3,948 | $131,573 |
| Manhasset Hills | 3,649 | $165,536 |
| Locust Valley | 3,571 | $152,472 |
| Muttontown | 3,512 | $250,000 or more |
| South Hempstead | 3,406 | $156,023 |
| Port Washington North | 3,160 | $136,389 |
| Great Neck Estates | 2,990 | $237,788 |
| Roslyn | 2,988 | $116,386 |
| Brookville | 2,939 | $250,000 or more |
| Lake Success | 2,828 | $244,079 |
| Munsey Park | 2,809 | $250,000 or more |
| East Norwich | 2,792 | $204,071 |
| Thomaston | 2,759 | $157,917 |
| Lido Beach | 2,719 | $193,625 |
| Sands Point | 2,712 | $250,000 or more |
| East Williston | 2,645 | $214,750 |
| Barnum Island | 2,590 | $116,250 |
| Bellerose Terrace | 2,329 | $166,086 |
| Oyster Bay Cove | 2,265 | $250,000 or more |
| Bay ParkGEOID 3604891 | 2,117 | $101,875 |
| East Atlantic Beach | 2,101 | $157,468 |
| Old Brookville | 2,020 | $250,000 or more |
| Stewart Manor | 1,992 | $155,000 |
| Laurel Hollow | 1,940 | $250,000 or more |
| Lattingtown | 1,881 | $250,000 or more |
| Upper Brookville | 1,786 | $250,000 or more |
| South Floral Park | 1,741 | $119,496 |
| Atlantic Beach | 1,707 | $165,565 |
| Point Lookout | 1,527 | $81,635 |
| Plandome | 1,448 | $250,000 or more |
| Harbor Isle | 1,436 | $129,525 |
| Roslyn Estates | 1,318 | $250,000 or more |
| Hewlett Harbor | 1,290 | $250,000 or more |
| Great Neck Gardens | 1,268 | $136,092 |
| Kensington | 1,226 | $220,625 |
| Bellerose | 1,173 | $232,250 |
| GreenvaleGEOID 3630598 | 1,069 | $120,125 |
| Roslyn Harbor | 1,067 | $250,000 or more |
| Mill Neck | 1,054 | $196,359 |
| Plandome Heights | 1,009 | $250,000 or more |
| Baxter Estates | 991 | $153,750 |
| Saddle Rock | 989 | $175,625 |
| Russell Gardens | 978 | $242,083 |
| Woodsburgh | 897 | $248,750 |
| Matinecock | 847 | not published |
| Plandome Manor | 793 | $250,000 or more |
| North LynbrookGEOID 3653231 | 747 | $143,636 |
| Hewlett NeckGEOID 3634319 | 569 | $250,000 or more |
| Harbor HillsGEOID 3632094 | 562 | $149,107 |
| Malverne Park OaksGEOID 3644792 | 538 | $144,205 |
| Hewlett Bay Park | 494 | $250,000 or more |
| Saddle Rock EstatesGEOID 3664441 | 428 | $143,646 |
| Centre Island | 407 | $218,036 |
| Cove Neck | 293 | $238,333 |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 place-by-county parts · Check it at data.census.gov
Who lives in Nassau County?
The median resident of Nassau County is 42.0 years old; 21.5% are under 18 and 18.7% are 65 or older. The largest group is non-Hispanic white residents at 54.3%, then Hispanic or Latino residents (of any race) at 18.7%. 23.3% of residents were born outside the United States.
| Measure | Nassau County | New York | Change since 2015-2019 |
|---|---|---|---|
| Median age | 42.0±0.2 | 39.8 | +0.3 |
| Under 18 years | 21.5% | 20.5% | – |
| 65 years and over | 18.7%±0.1 pts | 17.9% | – |
| Hispanic or Latino (any race) | 18.7% | 19.8% | +1.8 pts |
| White alone, not Hispanic | 54.3%±0.1 pts | 52.8% | −5.7 pts |
| Black or African American alone, not Hispanic | 10.8%±0.2 pts | 13.4% | −0.3 pts |
| Asian alone, not Hispanic | 12.2%±0.1 pts | 9.0% | +2.6 pts |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.1 pts | 0.2% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.1 pts | 0.0% | – |
| Two or more races, not Hispanic | 3.0%±0.2 pts | 3.8% | – |
| Some other race alone, not Hispanic | 1.0%±0.1 pts | 1.0% | – |
| Born outside the United States | 23.3%±0.3 pts | 22.8% | +0.9 pts |
| Speak a language other than English at home (age 5+) | 30.7%±0.4 pts | 30.9% | – |
| Civilian veterans (age 18+) | 3.0%±0.1 pts | 3.7% | – |
| With a disability | 9.4%±0.2 pts | 12.6% | – |
| No health insurance coverage | 3.8%±0.2 pts | 5.1% | −0.6 pts |
| High school graduate or higher (age 25+) | 92.2%±0.3 pts | 88.0% | – |
| Bachelor's degree or higher (age 25+) | 49.7%±0.5 pts | 40.2% | +3.7 pts |
| Graduate or professional degree (age 25+) | 22.8%±0.4 pts | 17.9% | – |
| Moved from another state in the past year | 0.6%±0.1 pts | 1.5% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Nassau County earn?
Half of Nassau County's 458,166 households earn less than $146,202 a year (±$1,472), against $85,974 in New York. In 2015-2019 the median was $142,884 in 2024 dollars, so it rose by $3,318 after inflation. 5.4% of residents live below the poverty line.
| Measure | Nassau County | New York | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $146,202±$1,472 | $85,974 | +$3,318 |
| Mean household income | $191,704±$2,042 | $128,247 | – |
| Per capita income | $64,198±$729 | $50,712 | +$913 |
| People below the poverty line | 5.4%±0.3 pts | 14.0% | no clear change |
| Children under 18 below the poverty line | 5.7%±0.6 pts | 18.3% | −1.0 pts |
| Households receiving SNAP | 5.0%±0.3 pts | 15.6% | – |
| Households with a broadband subscription | 94.8%±0.3 pts | 90.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Nassau County?
Owners occupy 81.9% of Nassau County's occupied homes and renters 18.1%. The median owner-occupied home is valued at $684,700 by its owner (±$2,833). The median renter pays $2,252 a month including utilities, and 45.5% of renters pay 35% or more of their income on rent.
| Measure | Nassau County | New York | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $684,700±$2,833 | $423,800 | +$77,353 |
| Median gross rent | $2,252±$41 | $1,621 | +$71 |
| Renters paying 35% or more of income on rent | 45.5%±1.6 pts | 43.1% | no clear change |
| Median monthly owner costs, with a mortgage | $3,795±$27 | $2,555 | – |
| Owner-occupied homes | 81.9%±0.5 pts | 54.3% | +1.2 pts |
| Housing units | 479,044±353 | 8,585,241 | +6,472 |
| Homeowner vacancy rate | 0.7%±0.1 pts | 1.1% | – |
| Rental vacancy rate | 4.5%±0.7 pts | 3.8% | – |
| Single-family detached homes | 76.1%±0.5 pts | 41.2% | – |
| Mobile homes | 0.2%±0.1 pts | 2.1% | – |
| Built 2020 or later | 0.8%±0.1 pts | 0.8% | – |
| Built 1939 or earlier | 19.2%±0.4 pts | 30.3% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Nassau County building?
Builders took permits for 821 new housing units across Nassau County in 2025 (642 single-family), 0.6 per 1,000 residents.
Source: Building Permits Survey, annual county files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Nassau County get to work?
60.7% of Nassau County's workers drive alone and 15.6% work from home. The average trip to work takes 36.0 minutes. The unemployment rate in 2020-2024 averaged 4.8%.
| Measure | Nassau County | New York | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 64.8%±0.3 pts | 62.7% | – |
| Unemployment rate | 4.8%±0.2 pts | 6.4% | +0.9 pts |
| Drove alone to work | 60.7%±0.5 pts | 48.8% | – |
| Carpooled | 7.3%±0.3 pts | 6.3% | – |
| Public transportation | 12.5%±0.4 pts | 21.6% | – |
| Walked | 2.0%±0.2 pts | 5.6% | – |
| Worked from home | 15.6%±0.4 pts | 14.9% | +11.4 pts |
| Mean travel time to work | 36.0 min±0.3 | 32.6 min | −0.6 min |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What are Nassau County's census tracts?
Nassau County is divided into 286 census tracts. Among those with a reliable estimate, median household income runs from $37,885 (Tract 4078.02) to $250,000 or more (Tract 5182.01).
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) · Check it at data.census.gov
How does Nassau County compare with New York's other counties?
| Measure | Rank |
|---|---|
| Population | 6th of 62 |
| Growth 2020-2025 | 19th of 62 |
| Residents per square mile | 6th of 62 |
| Median household income | 1st of 62 |
| Median home value | 4th of 62 |
| Median gross rent | 2nd of 62 |
| Poverty rate | 62nd of 62 |
| Bachelor's degree or higher | 4th of 62 |
| Median age | 31st of 62 |
Source: PlainCities ranks from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Nassau County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' school search.