Understanding Long Island - The Long Island Community Foundation
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Long Island has changed dramatically since our community foundation was established in 1978 by the New York Community Trust. Over four decades, Long Island has changed in density, demographics and populations in need with at-risk communities growing and diversifying. In the last decade, the rise in suburban poverty has surpassed the rise in urban poverty.
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Nassau County
Nassau County is a predominantly suburban county on Long Island, bordering New York City to the west. As of the 2020 census, the county’s population was 1,395,774, estimated to have increased slightly from 1,356,924 in 2019, making it the sixth-most populous county in New York. Its county seat is Mineola, and its largest town is Hempstead. The county was named after the German town of Nassau.

POPULATION
1.39M

MEDIAN AGE
41.9

MEDIAN HOUSEHOLD INCOME
$118,453

POVERTY RATE 
5.4%

NUMBER OF HOUSEHOLDS 
449,798

MEDIAN PROPERTY VALUE
$561,400

Learn more at https://datausa.io/profile/geo/nassau-county-ny
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Suffolk County
Suffolk County is a predominantly suburban county on Long Island and the easternmost county in the U.S. state of New York. As of the 2020 census, the county’s population was 1,525,920, estimated to have decreased slightly from 1,476,601 in 2019, making it the fourth-most populous county in New York. Its county seat is Riverhead, though most county offices are in Hauppauge. The county was named after the county of Suffolk in England, from where its earliest European settlers came.

POPULATION
1.52M

MEDIAN AGE
41.8

MEDIAN HOUSEHOLD INCOME
$106,228

POVERTY RATE
6.5%

NUMBER OF HOUSEHOLDS
499,744

MEDIAN PROPERTY VALUE
$430,500

Learn more at https://datausa.io/profile/geo/suffolk-county-ny

To learn more about Nassau County, click here.

To learn more about Suffolk County, click here.