Middlesex County NJ Information


Middlesex County Subdivisions

Middlesex County NJ Data & Demographics (As of July 1, 2018)


Total Population 853,646
Population in Households 830,233
Population in Familes 707,367
Population in Group Qrtrs 23,413
Population Density1 2,763
Diversity Index2 77


Median Household Income $85,912
Average Household Income $111,153
Per Capita Income $38,741


Total Housing Units 307,092 (100%)
Owner Occupied HU 185,993 (60.6%)
Renter Occupied HU 107,117 (34.9%)
Vacant Housing Units 13,982 ( 4.6%)
Median Home Value $351,698
Average Home Value $385,019


Total Households 293,110
Average Household Size 2.83
Family Households 210,828
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 0.64% 0.58%
Households 0.5% 0.49%
Families 0.46% 0.47%
Median Household Income   2.29%
Per Capita Income   2.54%


Middlesex County NJ - Peer Comparisons by Rank and Percentile

The table below compares Middlesex County to the other 21 counties and county equivalents in New Jersey 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 # 2 95th
Population Density # 6 76th
Diversity Index # 6 76th
Median Household Income # 7 71st
Per Capita Income # 10 57th

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