Middlesex County CT Information


Middlesex County Subdivisions

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  1. Middlesex County 2019 Demographic Data
  2. Growth Rates forMiddlesex County (Historical & 5-Year Forecast)
  3. Peer Comparisons (Rank and Percentile)
  1. Neighborhoods Demographics (Home Values, Household Income, etc.)
  2. Connecticut Research Tools (Easy Tools & Current Data)
  3. Connecticut Data Comparison Tool - 2019 Demographics

Middlesex County CT Data & Demographics (As of July 1, 2019)


Total Population 167,160
Population in Households 162,517
Population in Familes 129,522
Population in Group Qrtrs 4,643
Population Density 453
Diversity Index1 34


Median Household Income $79,197
Average Household Income $104,459
Per Capita Income $42,373
Wealth Index3 142


Total Housing Units 76,598 (100%)
Owner Occupied HU 47,588 (62.1%)
Renter Occupied HU 20,125 (26.3%)
Vacant Housing Units 8,885 (11.6%)
Median Home Value $286,873
Housing Affordability Index2 114


Total Households 67,713
Average Household Size 2.4
Family Households 43,610
Average Family Size 3
  1. 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.
  2. The Housing Affordability Index base is 100 and represents a balance point where a resident with a median household income can normally qualify to purchase a median price home. Values above 100 indicate increased affordability, while values below 100 indicate decreased affordability.
  3. The Wealth Index is based on a number of indicators of affluence including average household income and average net worth, but it also includes the value of material possessions and resources. It represents the wealth of the area relative to the national level. Values above or below 100 represent above-average wealth or below-average wealth compared to the national level.


2010-2019 2019-2024
Population 0.1% -0.02%
Households 0.08% -0.05%
Families -0.03% -0.12%
Median Household Income   1.55%
Per Capita Income   1.96%


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, 2019 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.

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Connecticut Census Data Comparison Tool

Compare Connecticut July 1, 2019 Data
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