Middlesex County NJ Information


Middlesex County Subdivisions

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


Total Population 855,458
Daytime Population: Workers 404,615
Daytime Population: Residents 422,554
Total Daytime Population (TDP) 827,169
Ratio TDP/Total Population1 0.97
Population in Households 831,980
Population in Familes 706,405
Population in Group Qrtrs 23,478
Population Density2 2,769
Diversity Index3 77


Median Household Income $81,863
Average Household Income $106,224
Per Capita Income $37,044


Total Housing Units 307,334 (100%)
Owner Occupied HU 186,530 (60.7%)
Renter Occupied HU 107,388 (34.9%)
Vacant Housing Units 13,416 ( 4.4%)
Median Home Value $343,730
Average Home Value $373,377


Total Households 293,918
Average Household Size 2.83
Family Households 211,819
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 0.76% 0.74%
Households 0.61% 0.64%
Families 0.59% 0.63%
Median Household Income   2.45%
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, 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 # 2 95th
Population Density # 6 76th
Diversity Index # 6 76th
Median Household Income # 7 71st
Per Capita Income # 9 62nd

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