Somerset County NJ Information


Somerset County Subdivisions

Somerset County NJ Data & Demographics (As of July 1, 2017)


Total Population 340,460
Daytime Population: Workers 193,074
Daytime Population: Residents 165,245
Total Daytime Population (TDP) 358,319
Ratio TDP/Total Population1 1.05
Population in Households 336,362
Population in Familes 287,079
Population in Group Qrtrs 4,098
Population Density2 1,128
Diversity Index3 66


Median Household Income $105,322
Average Household Income $145,487
Per Capita Income $52,891


Total Housing Units 128,729 (100%)
Owner Occupied HU 90,384 (70.2%)
Renter Occupied HU 32,332 (25.1%)
Vacant Housing Units 6,013 ( 4.7%)
Median Home Value $426,945
Average Home Value $512,755


Total Households 122,716
Average Household Size 2.74
Family Households 88,035
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 0.71% 0.66%
Households 0.57% 0.57%
Families 0.55% 0.56%
Median Household Income   1.89%
Per Capita Income   2.25%


Somerset County NJ - Peer Comparisons by Rank and Percentile

The table below compares Somerset County to the other 21 counties and county equivalents in New Jersey 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 # 13 43rd
Population Density # 10 57th
Diversity Index # 11 52nd
Median Household Income # 2 95th
Per Capita Income # 3 90th

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