Suffolk County NY Information


Suffolk County Subdivisions

Suffolk County NY Data & Demographics (As of July 1, 2014)


Total Population 1,503,076
Population in Households 1,473,538
Population in Familes 1,248,070
Population in Group Qrtrs 29,538
Population Density1 1,648
Diversity Index2 55


Total Households 505,386
Average Household Size 2.92
Family Households 372,618
Average Family Size 3


Total Housing Units 576,872 (100%)
Owner Occupied HU 393,998 (68.3%)
Renter Occupied HU 111,388 (19.3%)
Vacant Housing Units 71,486 (12.4%)
Median Home Value $348,316
Average Home Value $444,417


Median Household Income $90,118
Average Household Income $116,205
Per Capita Income $39,330
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 0.15% 0.18%
Households 0.26% 0.22%
Families 0.11% 0.12%
Median Household Income   2.5%
Per Capita Income   3.09%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Suffolk County NY - Peer Comparisons by Rank and Percentile

The table below compares Suffolk County to the other 62 counties and county equivalents in New York by rank and percentile using July 1, 2014 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 # 4 95th
Population Density1 # 9 87th
Diversity Index2 # 10 85th
Median Household Income # 3 97th
Per Capita Income # 5 94th

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