US Census Data

Nassau County vs Suffolk County

A side-by-side comparison of Nassau County and Suffolk County: population, income, housing, and more.

Nassau County and Suffolk County are counties in New York. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Suffolk County has the higher population (1,525,680 vs 1,388,138 in Nassau County). Nassau County has the higher median household income ($143,408 vs $128,329 in Suffolk County). Nassau County has the higher median home value ($658,700 vs $539,500 in Suffolk County).

Population, income & housing

Nassau CountySuffolk County
Population1,388,1381,525,680
Median age41.8 yrs41.7 yrs
Median household income$143,408$128,329
Median home value$658,700$539,500
Median gross rent$2,195$2,190
Housing units477,860579,790
Homeownership rate81.9%81.9%
Bachelor's degree or higher48.7%39.9%
Unemployment rate4.8%4.6%

Trends (ACS 5-year, 2019–2023)

Nassau CountySuffolk County
Population1,356,509 → 1,388,138 (+2.3%)1,483,832 → 1,525,680 (+2.8%)
Median household income$116,100 → $143,408 (+23.5%)$101,031 → $128,329 (+27.0%)
Median home value$493,500 → $658,700 (+33.5%)$397,400 → $539,500 (+35.8%)
Median gross rent$1,772 → $2,195 (+23.9%)$1,742 → $2,190 (+25.7%)

Nassau County

Population
1,356,5091,388,138
Median household income
$116,100$143,408
Median home value
$493,500$658,700
Median gross rent
$1,772$2,195

Suffolk County

Population
1,483,8321,525,680
Median household income
$101,031$128,329
Median home value
$397,400$539,500
Median gross rent
$1,742$2,190

Age & race/ethnicity

Age distribution (share)

Nassau CountySuffolk County
Under 55.3%5.3%
5 to 1716.3%15.6%
18 to 248.4%8.9%
25 to 3411.7%12.1%
35 to 4412.4%12.0%
45 to 5413.3%13.6%
55 to 6414.4%15.0%
65 to 7410.5%10.1%
75 and over7.7%7.4%

Race & ethnicity (share)

Nassau CountySuffolk County
White (non-Hispanic)55.4%63.2%
Black or African American10.9%6.8%
American Indian & Alaska Native0.1%0.2%
Asian11.5%4.2%
Native Hawaiian & Pacific Islander0.0%0.0%
Some other race0.9%0.7%
Two or more races2.8%2.7%
Hispanic or Latino18.5%22.2%

Educational attainment (age 25+)

Share of adults 25+

Nassau CountySuffolk County
No high school diploma7.9%9.5%
High school graduate21.0%24.8%
Some college or associate's22.4%25.8%
Bachelor's degree26.5%21.5%
Graduate or professional degree22.2%18.4%

Commute to work

How workers get to work (share)

Nassau CountySuffolk County
Drove alone62.2%73.4%
Carpooled7.3%7.4%
Public transit13.0%5.2%
Walked2.1%1.3%
Bicycle0.2%0.2%
Worked from home13.8%10.7%
Other means1.4%1.7%

Housing

Units in structure (share)

Nassau CountySuffolk County
1-unit, detached76.3%79.9%
1-unit, attached3.2%5.8%
2 to 4 units7.6%4.7%
5 to 19 units3.9%4.8%
20 or more units8.8%3.5%
Mobile home & other0.3%1.3%

Poverty & households

Nassau CountySuffolk County
Poverty rate5.3%6.4%
Average household size3.002.92
Mean commute (minutes)3632
Median year structure built19551970

Full profiles

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