Middlesex County CT Information


Middlesex County Subdivisions

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


Total Population 166,460
Population in Households 161,817
Population in Familes 129,699
Population in Group Qrtrs 4,643
Population Density2 451
Diversity Index3 33


Median Household Income $81,410
Average Household Income $108,597
Per Capita Income $44,409


Total Housing Units 76,045 (100%)
Owner Occupied HU 47,565 (62.5%)
Renter Occupied HU 19,693 (25.9%)
Vacant Housing Units 8,787 (11.6%)
Median Home Value $305,891
Average Home Value $345,524


Total Households 67,258
Average Household Size 2.41
Family Households 43,395
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 0.06% -0.02%
Households 0.01% -0.07%
Families -0.1% -0.14%
Median Household Income   2.35%
Per Capita Income   2.91%


Middlesex County CT - Peer Comparisons by Rank and Percentile

The table below compares Middlesex County to the other 8 counties and county equivalents in Connecticut 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 # 6 38th
Population Density # 4 63rd
Diversity Index # 6 38th
Median Household Income # 3 75th
Per Capita Income # 2 88th

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