COUNTY · 1990 CENSUS
Suffolk County
New York · 1,321,864 residents · 910.922 sq mi
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The short version
Suffolk County is significantly wealthier than the US average, with a median household income of $49,128. Population has declined 7% since 2000. Median home value is $165,200. Poverty is rare here, at 4.7% of residents. Households here earn about 49% more than the New York median.
At a glance
Wealthier
above the US median
US median: $30,130
Mid-age
median age 33.5
US median: 33.0
More educated
23% hold a bachelor's degree
US average: 20%
Stable housing
home values roughly flat, inflation adjusted
US median home: $93,722
Section 01
Population & growth
Population, 1990 – 2024
20241.5M
Age distribution, 1990
Under 57%(92,774)
5 to 96.5%(85,965)
10 to 146.8%(90,275)
15 to 197.3%(97,007)
20 to 247.6%(100,800)
25 to 3417.3%(228,360)
35 to 4415.7%(207,663)
45 to 5411.9%(157,466)
55 to 649.1%(120,560)
65 to 746.3%(83,837)
75 to 843.3%(43,877)
85 and over1%(13,280)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$49,128
−1%inflation adjusted, since 2000
vs $65,288 in 2000
US average: $30,130
1990 – 2024
Section 03
Housing
$165,200
+19%inflation adjusted, since 2000
vs $183,500 in 2000
US average: $93,722
1990 – 2024
RELATED:See current rent listings in Suffolk County on RentDataNow
Section 04
Race & ethnicity
2000
White, non-Hispanic78.8%(1,118,405)
Black6.6%(93,262)
Hispanic / Latino10.5%(149,411)
Asian2.4%(34,355)
Other0%
1990
White, non-Hispanic90.2%(1,192,236)
Black6.2%(82,473)
Hispanic / Latino6.4%(84,238)
Asian1.7%(22,185)
Other1.9%(24,970)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry
Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
Central American7.4%(113,963)
Salvadoran5%(77,014)
South American4.7%(72,030)
Puerto Rican4.3%(66,071)
Dominican2.5%(37,910)
Ecuadorian2%(30,197)
Mexican1.5%(23,547)
Colombian1.5%(23,114)
Guatemalan1%(15,499)
Honduran1%(15,177)
Peruvian0.7%(10,744)
Cuban0.5%(7,122)
+ 10 more hispanic origin groups with data
Spaniard0.4%(6,455)
Costa Rican0.2%(2,482)
Chilean0.2%(2,303)
Argentine0.1%(1,899)
Panamanian0.1%(1,780)
Venezuelan0.1%(1,571)
Nicaraguan0.1%(1,540)
Bolivian0.1%(815)
Uruguayan0%(699)
Paraguayan0%(275)
Asian origin
Asian Indian1.3%(20,045)
Chinese1%(15,862)
Pakistani0.6%(9,752)
Filipino0.4%(5,636)
Korean0.3%(4,967)
Bangladeshi0.2%(2,411)
Vietnamese0.1%(1,068)
Nepalese0.1%(976)
Kazakh0.1%(964)
Japanese0%(738)
Sri Lankan0%(592)
Taiwanese0%(429)
Pacific Islander origin
Native Hawaiian0%(267)
Samoan0%(196)
Chamorro0%(88)
Tongan0%(71)
Guamanian0%(14)
Fijian0%(12)
Chuukese0%(4)
Ancestry
Italian20.6%(314,782)
Irish16.2%(247,260)
German11%(168,143)
English4.2%(64,519)
Polish4%(61,286)
American3.9%(59,196)
West Indian2.1%(32,384)
Russian1.5%(23,685)
Greek1.2%(18,288)
French1%(15,249)
Haitian0.9%(14,486)
Scottish0.8%(11,877)
+ 50 more ancestry groups with data
Jamaican0.7%(11,280)
Norwegian0.6%(9,368)
Dutch0.5%(7,806)
Ukrainian0.5%(7,686)
Subsaharan African0.5%(7,391)
Swedish0.5%(6,963)
Hungarian0.4%(6,719)
Arab0.4%(6,449)
Turkish0.4%(6,443)
Austrian0.4%(5,814)
Portuguese0.4%(5,797)
Czech0.3%(4,626)
Lithuanian0.3%(4,085)
Guyanese0.3%(4,053)
Scotch-Irish0.2%(3,561)
Trinidadian & Tobagonian0.2%(3,525)
French Canadian0.2%(3,203)
Danish0.2%(2,482)
Welsh0.2%(2,372)
Brazilian0.2%(2,299)
Croatian0.1%(2,210)
British0.1%(2,172)
Armenian0.1%(2,135)
Swiss0.1%(1,953)
Romanian0.1%(1,930)
Egyptian0.1%(1,759)
Nigerian0.1%(1,736)
Finnish0.1%(1,727)
Lebanese0.1%(1,473)
Canadian0.1%(1,439)
Ghanaian0.1%(1,258)
Iranian0.1%(1,219)
Slovak0.1%(1,193)
Israeli0.1%(988)
Belgian0.1%(849)
Syrian0.1%(782)
Jordanian0%(598)
Latvian0%(556)
Barbadian0%(515)
Moroccan0%(500)
Serbian0%(385)
Palestinian0%(305)
Australian0%(256)
Iraqi0%(168)
Slovene0%(165)
Bulgarian0%(140)
Ethiopian0%(96)
Macedonian0%(27)
Cape Verdean0%(20)
Kenyan0%(19)
Section 05
Education
High school or higher
82.2%
−4.0 ptsvs 2000
vs 86.2% in 2000
US average: 75.2%
Section 06
Commute & transportation
Section 07
Work & employment
No data for the years selected.
Section 08
People & community
No data for the years selected.
Marital status (2024)
Men 15+
Never married37.1%(232,476)
Married53.4%(334,698)
Widowed2.7%(16,949)
Divorced6.9%(43,181)
Women 15+
Never married31.4%(202,612)
Married49.8%(321,223)
Widowed8.7%(56,211)
Divorced10%(64,595)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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Compare Suffolk County to nearby counties
SUFFOLK COUNTY VS
South Central Connecticut Planning Region
Income$88,197+80%
Home value$353,100+114%
Population578,741−63%
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SUFFOLK COUNTY VS
Greater Bridgeport Planning Region
Income$89,667+83%
Home value$428,800+160%
Population337,697−78%
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SUFFOLK COUNTY VS
Lower Connecticut River Valley Planning Region
Income$104,428+113%
Home value$379,700+130%
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SUFFOLK COUNTY VS
Naugatuck Valley Planning Region
Income$86,191+75%
Home value$317,700+92%
Population463,349−70%
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Frequently asked
How many people live in Suffolk County, New York?
Suffolk County, New York has about 1,321,864 residents according to the 1990 Census.
What is the median household income in Suffolk County, New York?
The typical household in Suffolk County, New York earns about $49,128 a year. Half of households make more than that, and half make less.
Is Suffolk County, New York expensive?
In Suffolk County, New York, the median home is worth about $165,200, and the typical rent is about $802 a month.
How educated are people in Suffolk County, New York?
About 23.0% of adults age 25 and over in Suffolk County, New York hold a bachelor's degree or higher.
What is the poverty rate in Suffolk County, New York?
About 4.7% of people in Suffolk County, New York live below the federal poverty line.
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371 census tracts (top 20 by population)
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All counties in New YorkDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024