Ansonia, CT Profile: Facts, Map & Data


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Ansonia, Connecticut - Basic Facts

The City of Ansonia had a population of 18,963 as of July 1, 2018. Ansonia ranks in the upper quartile for Population Density and Diversity Index when compared to the other cities, towns and Census Designated Places (CDPs) in Connecticut. See peer rankings below.

The primary coordinate point for Ansonia is located at latitude 41.3442 and longitude -73.0698 in New Haven County. The formal boundaries for the City of Ansonia (see map below) encompass a land area of 6.02 sq. miles and a water area of 0.17 sq. miles. New Haven County is in the Eastern time zone (GMT -5). The elevation is 49 feet.

The City of Ansonia (GNIS ID: 2378267) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Ansonia is located within Town of Ansonia, a minor civil division (MCD) of New Haven County.

Beneath the boundary map are tables with Ansonia population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2018.

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City of Ansonia, CT Boundary Map

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


Total Population 18,963
Population in Households 18,843
Population in Familes 15,397
Population in Group Qrtrs 120
Population Density2 3,151
Diversity Index3 64


Median Household Income $59,557
Average Household Income $76,356
Per Capita Income $29,512


Total Housing Units 8,148 (100%)
Owner Occupied HU 4,063 (49.9%)
Renter Occupied HU 3,225 (39.6%)
Vacant Housing Units 860 (10.6%)
Median Home Value $251,509
Average Home Value $257,144


Total Households 7,288
Average Household Size 2.59
Family Households 4,850
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 -0.18% -0.12%
Households -0.36% -0.21%
Families -0.45% -0.26%
Median Household Income   4.17%
Per Capita Income   3.67%

Ansonia, CT - Peer Comparisons by Rank and Percentile

The table below compares Ansonia to the other 142 incorporated cities, towns and CDPs 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 # 30 80th
Population Density # 24 84th
Diversity Index # 19 87th
Median Household Income # 100 30th
Per Capita Income # 114 20th

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

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