Darien, CT Profile: Facts, Map & Data


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Darien, Connecticut - Basic Facts

The Darien Census Designated Place had a population of 21,760 as of July 1, 2017.

The primary coordinate point for Darien is located at latitude 41.0522 and longitude -73.4797 in Fairfield County. The formal boundaries for the Darien Census Designated Place (see map below) encompass a land area of 12.65 sq. miles and a water area of 10.82 sq. miles. Fairfield County is in the Eastern time zone (GMT -5). The elevation is 49 feet.

The Darien Census Designated Place (GNIS ID: 2377813) has a U1 Census Class Code which indicates a census designated place with an official federally recognized name. It also has a Functional Status Code of "S" which identifies a statistical entity.

The Darien Census Designated Place is located within Town of Darien, a minor civil division (MCD) of Fairfield County.

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

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Darien Census Designated Place, CT Boundary Map

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Boundary Maps: Town of Darien | Fairfield County | Connecticut Counties

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


Total Population 21,760
Daytime Population: Workers 9,817
Daytime Population: Residents 13,057
Total Daytime Population (TDP) 22,874
Ratio TDP/Total Population1 1.05
Population in Households 21,713
Population in Familes 20,096
Population in Group Qrtrs 47
Population Density2 1,720
Diversity Index3 23


Median Household Income $200,001
Average Household Income $275,549
Per Capita Income $87,356


Total Housing Units 7,312 (100%)
Owner Occupied HU 5,726 (78.3%)
Renter Occupied HU 1,168 (16.0%)
Vacant Housing Units 418 ( 5.7%)
Median Home Value $1,000,001
Average Home Value $1,056,191


Total Households 6,894
Average Household Size 3.15
Family Households 5,658
Average Family Size 4
  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 0.67% 0.64%
Households 0.4% 0.49%
Families 0.38% 0.48%
Median Household Income   0.0%
Per Capita Income   1.44%

Darien, CT - Peer Comparisons by Rank and Percentile

The table below compares Darien 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 # 29 80th
Population Density # 57 61st
Diversity Index # 92 35th
Median Household Income # 1 99th
Per Capita Income # 3 99th

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

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