Nassau County NY Information


Nassau County Subdivisions

Nassau County NY Data & Demographics (As of July 1, 2018)


Total Population 1,368,213
Population in Households 1,347,429
Population in Familes 1,174,214
Population in Group Qrtrs 20,784
Population Density1 4,806
Diversity Index2 66


Median Household Income $107,430
Average Household Income $145,668
Per Capita Income $48,459


Total Housing Units 474,758 (100%)
Owner Occupied HU 360,871 (76.0%)
Renter Occupied HU 91,089 (19.2%)
Vacant Housing Units 22,798 ( 4.8%)
Median Home Value $491,821
Average Home Value $633,903


Total Households 451,960
Average Household Size 2.98
Family Households 339,897
Average Family Size 3
  1. Population Density = Total Population per square mile.
  2. The Diversity Index is a scale of 0 to 100 that represents the likelihood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.


2010-2017 2017-2022
Population 0.26% 0.26%
Households 0.09% 0.18%
Families -0.02% 0.11%
Median Household Income   1.71%
Per Capita Income   2.52%


Nassau County NY - Peer Comparisons by Rank and Percentile

The table below compares Nassau County to the other 62 counties and county equivalents in New York by rank and percentile using July 1, 2018 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 6 92nd
Population Density # 6 92nd
Diversity Index # 6 92nd
Median Household Income # 1 100th
Per Capita Income # 3 97th

Additional comparisons and rankings can be made with a VERY EASY TO USE New York Census Data Comparison Tool.