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World Population Review
Suffolk County, New York Population 2021
Suffolk County, New York's estimated population is 1,468,140 with a growth rate of -0.29% in the past year according to the most recent United States census data. Suffolk County, New York is the 5th largest county in New York. The 2010 Population was 1,494,340 and has seen a growth of -1.75% since this time.
Note: 2020 and 2021 data is projected
| Year | Population | Growth | Growth Rate |
|---|---|---|---|
| 2021 | 1,468,140 | -4,230 | -0.29% |
| 2020 | 1,472,370 | -4,230 | -0.29% |
| 2019 | 1,476,600 | -4,230 | -0.29% |
| 2018 | 1,480,830 | -2,530 | -0.17% |
| 2017 | 1,483,360 | -3,050 | -0.21% |
| 2016 | 1,486,410 | -5,560 | -0.37% |
| 2015 | 1,491,970 | -3,550 | -0.24% |
| 2014 | 1,495,520 | -1,830 | -0.12% |
| 2013 | 1,497,350 | 370 | 0.02% |
| 2012 | 1,496,980 | -1,910 | -0.13% |
| 2011 | 1,498,890 | 4,550 | 0.30% |
| 2010 | 1,494,340 | 172,480 | 13.05% |
| 1990 | 1,321,860 | 37,630 | 2.93% |
| 1980 | 1,284,230 | 159,280 | 14.16% |
| 1970 | 1,124,950 | 458,166 | 68.71% |
| 1960 | 666,784 | 390,655 | 141.48% |
| 1950 | 276,129 | 78,774 | 39.91% |
| 1940 | 197,355 | 36,300 | 22.54% |
| 1930 | 161,055 | 50,809 | 46.09% |
| 1920 | 110,246 | 14,108 | 14.67% |
| 1910 | 96,138 | 18,556 | 23.92% |
| 1900 | 77,582 | 15,091 | 24.15% |
| 1890 | 62,491 | 8,603 | 15.96% |
| 1880 | 53,888 | 6,964 | 14.84% |
| 1870 | 46,924 | 3,649 | 8.43% |
| 1860 | 43,275 | 6,353 | 17.21% |
| 1850 | 36,922 | 4,453 | 13.71% |
| 1840 | 32,469 | 5,689 | 21.24% |
| 1830 | 26,780 | 2,508 | 10.33% |
| 1820 | 24,272 | 3,159 | 14.96% |
| 1810 | 21,113 | 1,378 | 6.98% |
| 1800 | 19,735 | 3,295 | 20.04% |
| 1790 | 16,440 | 0.00% |
2021 Growth Rate
-0.29%
County Website
State
Founded
1683
County Seat
Lat./Long.
2010 Population
1,494,340
Growth Since 2010
-1.75%
Suffolk County, New York Population Growth
| Race | Population | Percentage |
|---|---|---|
| White | 1,196,719 | 80.65% |
| Black or African American | 116,018 | 7.82% |
| Some Other Race | 74,432 | 5.02% |
| Asian | 58,204 | 3.92% |
| Two or More Races | 33,829 | 2.28% |
| American Indian and Alaska Native | 4,212 | 0.28% |
| Native Hawaiian and Other Pacific Islander | 418 | 0.03% |
Suffolk County, New York Population by Race
Suffolk County, New York Population Pyramid $2021
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Suffolk County, New York Population by Age
Suffolk County, New York Households and Families
| Type | Count | Average Size | Owned |
|---|---|---|---|
| All | 489,301 | 2.97 | 80.6 |
| Married | 278,957 | 3.58 | 89.9 |
| Non Family | 132,875 | 1.24 | 66.6 |
| Female | 54,210 | 3.79 | 69.2 |
| Male | 23,259 | 3.75 | 74.5 |
3.5
Average Family Size
2.97
Average Household Size
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Suffolk County, New York Households by Type
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| Education Attained | Count | Percentage |
|---|---|---|
| Less Than 9th Grade | 44,935 | 4.36% |
| 9th to 12th Grade | 52,155 | 5.06% |
| High School Graduate | 281,922 | 27.35% |
| Some College | 179,604 | 17.42% |
| Associates Degree | 97,561 | 9.46% |
| Bachelors Degree | 203,594 | 19.75% |
| Graduate Degree | 171,071 | 16.60% |
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Suffolk County, New York Educational Attainment by Sex (over 25)
Suffolk County, New York Educational Attainment by Race
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| Race | Total | High School | Bachelors |
|---|---|---|---|
| White | 741,904 | 705,289 | 299,097 |
| Hispanic | 166,610 | 120,056 | 30,083 |
| Black | 73,944 | 64,636 | 19,117 |
| Other Race | 43,249 | 28,819 | 6,500 |
| Asian | 38,524 | 34,684 | 22,552 |
| 2+ Races | 14,481 | 11,772 | 4,558 |
| Native American | 2,929 | 2,157 | 542 |
| Islander | 310 | 235 | 101 |
The highest rate of high school graduation is among white people with a rate of 95.06%.
The highest rate of bachelors degrees is among asian people with a rate of 58.54%.
Suffolk County, New York Educational Attainment by Race
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$53,210
Average Earnings
$63,242
Average Male
$43,762
Average Female
Suffolk County, New York Earnings by Educational Attainment
Suffolk County, New York Language by Age
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Suffolk County, New York Language
77.30% of Suffolk County, New York residents speak only English, while 22.70% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 14.32% of the population.
Suffolk County, New York Language
Suffolk County, New York Poverty by Race
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| Name | Total | In Poverty | Poverty Rate |
|---|---|---|---|
| White | 990,450 | 46,951 | 4.74% |
| Hispanic | 280,931 | 35,688 | 12.70% |
| Black | 112,260 | 12,528 | 11.16% |
| Other | 72,294 | 10,003 | 13.84% |
| Asian | 53,321 | 3,937 | 7.38% |
| Multiple | 32,098 | 3,550 | 11.06% |
| Native | 4,054 | 523 | 12.90% |
| Islander | 399 | 54 | 13.53% |
6.87%
Overall Poverty Rate
6.06%
Male Poverty Rate
7.66%
Female Poverty Rate
Poverty in Suffolk County, New York
The race most likely to be in poverty in Suffolk County, New York is Other, with 13.84% below the poverty level.
The race least likely to be in poverty in Suffolk County, New York is White, with 4.74% below the poverty level.
The poverty rate among those that worked full-time for the past 12 months was 1.28%. Among those working part-time, it was 7.39%, and for those that did not work, the poverty rate was 12.65%.
Suffolk County, New York Poverty
Suffolk County, New York Poverty Rate by Education
Suffolk County, New York Marital Status
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Marriage Rates
50.8%
Overall Marriage Rate
52.8%
Male Marriage Rate
48.9%
Female Marriage Rate
Suffolk County, New York Married by Age and Sex
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Suffolk County, New York Marriage
The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 45-54.
Suffolk County, New York Marital Status by Race
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Suffolk County, New York Marital Status
Suffolk County, New York Veterans by War
Suffolk County, New York Veterans by Age
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| Name | Veterans | % of Total |
|---|---|---|
| White | 55,273 | 5.77% |
| Hispanic | 4,754 | 2.43% |
| Black | 3,711 | 4.25% |
| Other Race | 751 | 1.45% |
| 2+ Races | 585 | 3.14% |
| Asian | 582 | 1.27% |
| Native American | 176 | 5.14% |
| Islander | 12 | 3.14% |
Suffolk County, New York Veterans by Race
Suffolk County, New York Veterans by Education
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4.44%
Veteran Poverty Rate
24.05%
Veteran Disability Rate
Suffolk County, New York Veterans by Education
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65.1%
Labor Force Participation
62.3%
Employment Rate
4.2%
Unemployment Rate
Suffolk County, New York Employment by Age
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Suffolk County, New York Employment by Race
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Suffolk County, New York Employment by Education
Origin of Non-Citizens
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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.
Origin of Naturalized Citizens
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84.44%
Native Born
15.56%
Foreign Born
6.73%
Non Citizen
8.83%
Naturalized
Place of Birth
84.44% of Suffolk County, New York residents were born in the United States, with 76.11% having been born in New York. 6.73% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.
Suffolk County, New York Place of Birth
- US Census City/Town Population estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
- Population of States and Counties of the United States: 1790 - 1990