Derby, CT Profile: Facts, Map & Data


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Derby, Connecticut - Basic Facts

The City of Derby had a population of 13,207 as of July 1, 2017. Derby 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 Derby is located at latitude 41.3261 and longitude -73.0826 in New Haven County. The formal boundaries for the City of Derby (see map below) encompass a land area of 5.06 sq. miles and a water area of 0.35 sq. miles. New Haven County is in the Eastern time zone (GMT -5). The elevation is 69 feet.

The City of Derby (GNIS ID: 2378273) 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 Derby is located within Town of Derby, a minor civil division (MCD) of New Haven County.

Beneath the boundary map are tables with Derby population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Alternate Unofficial Names for Derby: Birmingham, East Huntington.

Neighborhood Data

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City of Derby, CT Boundary Map

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Boundary Maps: Town of Derby | New Haven County | Connecticut Counties

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Derby, CT Data & Demographics (As of July 1, 2017)


Total Population 13,207
Daytime Population: Workers 6,776
Daytime Population: Residents 6,440
Total Daytime Population (TDP) 13,216
Ratio TDP/Total Population1 1.00
Population in Households 12,970
Population in Familes 9,929
Population in Group Qrtrs 237
Population Density2 2,612
Diversity Index3 56


Median Household Income $56,332
Average Household Income $73,838
Per Capita Income $30,988


Total Housing Units 5,869 (100%)
Owner Occupied HU 3,098 (52.8%)
Renter Occupied HU 2,360 (40.2%)
Vacant Housing Units 411 ( 7.0%)
Median Home Value $231,226
Average Home Value $253,607


Total Households 5,458
Average Household Size 2.38
Family Households 3,263
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 0.32% 0.28%
Households 0.18% 0.19%
Families 0.09% 0.13%
Median Household Income   1.6%
Per Capita Income   2.53%

Derby, CT - Peer Comparisons by Rank and Percentile

The table below compares Derby to the other 142 incorporated cities, towns and CDPs in Connecticut 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 # 36 75th
Population Density # 35 76th
Diversity Index # 26 82nd
Median Household Income # 106 26th
Per Capita Income # 104 27th

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

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