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Nassau County, New York Demographics 2026

Nassau County, New York has a population of 1,389,591, the 6th most populous county in New York. The median household income is $146,202 and the median home value is $684,700. The poverty rate is 5.4%.

Data vintage: U.S. Census Bureau ACS 2020–2024 5-Year Estimates · refreshed July 2026 · Methodology & source notes

Nassau County Quick Facts

Population 1,389,591
Median Household Income $146,202
Median Home Value $684,700
Poverty Rate 5.4%
Unemployment Rate 4.8%
Median Age 42.0 years
Homeownership Rate 82.0%
Affordability Ratio 4.7x
Bachelor's Degree+ 49.7%
High School Graduation 92.2%
Cities/Places 133
Population 1,389,591 6th of 62
Median Income $146,202 70% higher than state
Poverty Rate 5.4%
Unemployment 4.8%

How Nassau County Changed

Change from the 2019–2023 ACS period to 2020–2024. These are rolling five-year estimates, not year-over-year measurements.

Metric2019–20232020–2024Change
Population1,388,1381,389,591+0.1%
Median household income$143,408$146,202+1.9%
Median home value$658,700$684,700+3.9%

Economy & Housing

Household Income Distribution

Under $25K 7.1%
$25K-$50K 8.4%
$50K-$100K 17.9%
$100K+ 66.6%
Detailed income brackets
Under $10K
2.9%
$10K-$15K
1.4%
$15K-$20K
1.4%
$20K-$25K
1.4%
$25K-$30K
1.7%
$30K-$35K
1.7%
$35K-$40K
1.7%
$40K-$45K
1.7%
$45K-$50K
1.7%
$50K-$60K
3.6%
$60K-$75K
5.3%
$75K-$100K
9.0%
$100K-$125K
9.3%
$125K-$150K
8.5%
$150K-$200K
14.5%
$200K+
34.3%

Employment

4.8% Unemployment Rate State: 6.4%|National: 5.2%
64.8% Labor Force Participation

Housing Overview

Owner 82.0%
Renter 18.1%
Affordability Index Moderate
4.7x home value to income ratio
Median gross rent $2,252/mo 18.5% of median household income annually

People & Demographics

Diversity Index

64out of 100
High Diversity

A diverse community with significant representation from multiple racial and ethnic groups.

State average: 65 | National average: 61

Education

Cities & Places in Nassau County

CityPopulationMedian IncomePovertyHome Value
Hempstead58,801$90,42014.4%$459,500
Levittown51,904$146,0684.7%$590,500
Freeport44,088$120,6257.4%$505,900
Hicksville43,780$144,4713.9%$634,100
Valley Stream40,315$133,1905.5%$616,100
East Meadow36,821$133,9716.4%$631,800
Elmont36,518$114,2175.0%$602,900
Baldwin34,994$145,4726.6%$593,800
Long Beach34,756$140,7397.6%$696,400
Uniondale33,148$124,6849.2%$539,000
Oceanside31,639$149,5602.9%$634,300
Franklin Square30,897$143,2635.6%$657,000
Glen Cove28,112$92,06413.5%$698,900
Plainview25,982$189,9062.9%$796,300
Rockville Centre25,765$151,9384.7%$818,700
Garden City22,941$244,1523.0%$1,075,900
Merrick21,744$185,7402.3%$771,900
Massapequa21,389$181,8462.4%$693,200
Mineola21,211$137,7395.3%$651,200
North Bellmore20,689$181,6621.2%$659,200
West Hempstead20,648$164,1274.5%$653,600
East Massapequa20,377$146,4543.3%$625,600
Lynbrook20,325$136,6967.5%$611,900
Roosevelt18,885$135,0693.8%$477,400
Syosset18,433$187,2734.2%$874,300
Wantagh18,365$179,3623.1%$706,600
Woodmere18,061$172,5372.1%$975,400
Port Washington18,004$170,1274.1%$1,003,200
North Massapequa17,877$148,6544.9%$634,900
North Valley Stream17,825$142,7334.0%$613,800
Bethpage17,123$122,2575.6%$605,900
Massapequa Park16,963$171,9533.1%$642,600
Floral Park16,169$150,0843.0%$789,600
Bellmore15,954$161,6743.1%$681,800
Westbury15,808$145,1853.4%$626,500
Seaford15,549$172,5573.6%$658,300
South Farmingdale14,676$155,0722.9%$607,700
New Cassel14,551$155,4437.6%$509,100
North New Hyde Park14,159$172,4403.1%$796,700
Jericho13,759$167,9357.3%$948,400
Salisbury12,412$162,4784.8%$664,300
North Merrick12,366$161,5543.7%$675,800
Inwood12,235$94,34214.5%$680,300
North Wantagh11,940$156,7383.2%$624,400
Great Neck11,087$137,9816.6%$968,500
New Hyde Park10,220$142,9273.6%$722,900
East Rockaway10,077$124,9292.5%$621,300
Woodbury9,348$191,3215.4%$1,003,400
Plainedge8,624$158,2145.7%$615,800
Malverne8,477$149,4898.2%$651,100
Farmingdale8,474$122,9805.2%$559,700
Garden City Park7,914$149,8001.4%$834,500
Manhasset7,716$165,9324.9%$1,356,500
Great Neck Plaza7,593$92,4748.6%$416,100
Hewlett7,570$140,7656.7%$654,500
Williston Park7,542$156,3823.2%$739,800
Cedarhurst7,320$101,5726.4%$861,900
Oyster Bay7,308$111,2647.4%$695,500
East Hills7,257$250,000+2.8%$1,461,500
Roslyn Heights6,975$175,2634.9%$975,400
Manorhaven6,958$105,4866.4%$687,100
Lawrence6,778$170,0003.5%$1,623,200
Bayville6,744$149,1913.7%$710,000
Old Bethpage6,546$195,2022.6%$913,000
South Valley Stream6,512$145,0009.8%$656,800
Lakeview5,825$118,77714.9%$565,300
Kings Point5,634$211,2990.9%$1,981,000
North Hills5,415$173,3153.0%$1,228,800
Carle Place5,188$145,5004.3%$744,400
Sea Cliff5,033$193,5900.9%$986,900
Island Park4,976$104,92612.4%$574,500
Albertson4,891$132,9553.0%$803,900
Flower Hill4,803$250,000+2.9%$1,975,500
Searingtown4,720$212,3443.0%$1,100,700
Glen Head4,653$138,4652.3%$872,000
Old Westbury4,241$250,000+3.2%$2,000,000+
Locust Valley4,153$152,4722.5%$846,500
University Gardens4,110$101,7868.2%$794,500
Garden City South4,075$136,1644.3%$740,400
Herricks3,907$135,2085.7%$825,400
Glenwood Landing3,896$131,5730.4%$895,400
Manhasset Hills3,692$165,5365.6%$1,057,800
Muttontown3,505$250,000+4.0%$1,914,800
Port Washington North3,149$136,3892.8%$1,058,900
South Hempstead3,108$156,0231.7%$601,000
Great Neck Estates3,023$237,7885.7%$1,638,700
Roslyn2,978$116,3868.0%$597,600
Brookville2,941$250,000+4.5%$2,000,000+
Lake Success2,829$244,0794.4%$1,555,000
Munsey Park2,778$250,000+2.0%$1,984,400
Thomaston2,744$157,9177.4%$1,084,000
Sands Point2,722$250,000+3.4%$2,000,000+
East Norwich2,697$204,0711.5%$828,100
East Williston2,611$214,7502.3%$1,068,500
Lido Beach2,495$193,62510.4%$896,000
Barnum Island2,302$116,2504.3%$755,100
Old Brookville2,107$250,000+1.1%$2,000,000+
Oyster Bay Cove2,075$250,000+6.3%$1,714,700
Bellerose Terrace2,006$166,0862.8%$592,400
Upper Brookville2,004$250,000+0.9%$2,000,000+
Lattingtown1,962$250,000+6.7%$1,633,900
Laurel Hollow1,927$250,000+3.5%$1,636,700
East Atlantic Beach1,825$157,4686.4%$810,300
Stewart Manor1,797$155,0005.0%$799,700
South Floral Park1,706$119,4969.5%$603,400
Plandome1,518$250,000+0.9%$2,000,000+
Bay Park1,510$101,8751.4%$440,500
Great Neck Gardens1,492$136,0928.8%$1,289,200
Atlantic Beach1,422$165,5651.8%$996,600
Roslyn Estates1,405$250,000+9.8%$1,761,000
Hewlett Harbor1,207$250,000+1.9%$1,497,000
Saddle Rock1,190$175,6250.8%$1,733,600
Kensington1,189$220,62511.9%$1,550,500
Harbor Isle1,176$129,5250.3%$614,400
Bellerose1,136$232,2501.6%$863,400
Mill Neck1,136$196,3595.7%$1,368,800
Greenvale1,113$120,1252.0%$745,100
Russell Gardens1,078$242,0832.6%$1,528,400
Baxter Estates1,058$153,7501.0%$1,134,400
Plandome Heights1,036$250,000+3.8%$1,618,000
Roslyn Harbor1,036$250,000+9.9%$1,525,000
Point Lookout945$81,6359.3%$1,098,600
North Lynbrook922$143,6360.9%$629,400
Matinecock867N/A10.0%$2,000,000+
Woodsburgh830$248,7501.5%$1,625,000
Plandome Manor718$250,000+2.8%$2,000,000+
Malverne Park Oaks635$144,2050.0%$488,200
Hewlett Neck519$250,000+2.9%$1,375,000
Saddle Rock Estates485$143,64623.5%$1,412,500
Harbor Hills458$149,1070.0%$1,698,900
Hewlett Bay Park428$250,000+2.8%$2,000,000+
Centre Island264$218,03615.2%$2,000,000
Cove Neck231$238,3337.9%$2,000,000+

Explore New York Rankings

Cities by Population All cities ranked by size Richest Cities Ranked by median income Most Educated By bachelor's degree rate Most Affordable By housing affordability

Population Overview

Nassau County is located in New York with a total population of 1,389,591. It is the 6th most populous county out of 62 in New York. The county encompasses 133 Census-designated places.

Age Demographics

The median age in Nassau County is 42.0 years. This is 6% higher than the state median of 39.8 years.

Economy, Income & Housing

The median household income in Nassau County is $146,202. This is 70% higher than the state median of $85,974. It is also 81% higher than the national median of $80,734. The poverty rate stands at 5.4%. This is 61% lower than the state poverty rate of 14.0%. The unemployment rate is 4.8%. This is 24% lower than the state rate of 6.4%. The median home value is $684,700. Housing costs are 62% higher than the state median of $423,800. The home-value-to-income ratio is 4.7x. 82.0% of occupied housing units are owner-occupied. This homeownership rate is 51% higher than the state average of 54.4%.

Race & Ethnicity

The largest racial or ethnic group in Nassau County is White (non-Hispanic), making up 54.3% of the population. Hispanic or Latino residents account for 18.7%.

Education

49.7% of residents aged 25 and older hold a bachelor's degree or higher. This places Nassau County in the top 10% of all counties in the state for educational attainment. This is 23% higher than the state rate of 40.2%. Nationally, 35.7% of adults hold at least a bachelor's degree. The high school graduation rate (or equivalent) is 92.2%. Notably, 22.8% of adults hold a graduate or professional degree, indicating a highly educated workforce.

Data Sources & Methodology

All figures for Nassau County come from the U.S. Census Bureau's American Community Survey (ACS) 2020–2024 5-Year Estimates, with comparisons drawn against New York and national averages from the same dataset. See our methodology page for how each metric is defined, or data.census.gov for official tables with margins of error.

Frequently Asked Questions

What is the population of Nassau County, New York?

Nassau County has a population of 1,389,591, making it the 6th most populous county in New York.

What is the median income in Nassau County?

The median household income in Nassau County is $146,202 with a poverty rate of 5.4%.

How many cities are in Nassau County, New York?

Nassau County contains 133 Census-designated places.