Middlesex County NJ Information


Middlesex County Subdivisions

Middlesex County NJ Data & Demographics (As of July 1, 2015)


Total Population 831,395
Population in Households 807,674
Population in Familes 685,296
Population in Group Qrtrs 23,721
Population Density1 2,691
Diversity Index2 75


Total Households 288,168
Average Household Size 2.8
Family Households 208,305
Average Family Size 3


Total Housing Units 303,004 (100%)
Owner Occupied HU 186,530 (61.6%)
Renter Occupied HU 101,638 (33.5%)
Vacant Housing Units 14,836 ( 4.9%)
Median Home Value $349,635
Average Home Value $397,314


Median Household Income $77,990
Average Household Income $100,598
Per Capita Income $35,365
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.5% 0.62%
Households 0.47% 0.58%
Families 0.5% 0.6%
Median Household Income   2.14%
Per Capita Income   2.52%
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.


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, 2015 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 Density1 # 6 76th
Diversity Index2 # 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.