Nassau County NY Information


Nassau County Subdivisions

Nassau County NY Data & Demographics (As of July 1, 2017)


Total Population 1,368,111
Daytime Population: Workers 605,549
Daytime Population: Residents 684,462
Total Daytime Population (TDP) 1,290,011
Ratio TDP/Total Population1 0.94
Population in Households 1,347,283
Population in Familes 1,169,587
Population in Group Qrtrs 20,828
Population Density2 4,805
Diversity Index3 65


Median Household Income $103,836
Average Household Income $140,500
Per Capita Income $46,886


Total Housing Units 475,542 (100%)
Owner Occupied HU 357,449 (75.2%)
Renter Occupied HU 95,801 (20.1%)
Vacant Housing Units 22,292 ( 4.7%)
Median Home Value $480,687
Average Home Value $576,766


Total Households 453,250
Average Household Size 2.97
Family Households 341,087
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. 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 0.29% 0.32%
Households 0.14% 0.22%
Families 0.02% 0.14%
Median Household Income   1.45%
Per Capita Income   2.12%


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, 2017 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.