Cos Cob, CT Profile: Facts, Map & Data


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Cos Cob, Connecticut - Basic Facts

The Cos Cob Census Designated Place is a community or populated place (Class Code U5) located in Fairfield County at latitude 41.0486 and longitude -73.5919. Fairfield County is in the Eastern time zone (GMT -5). The elevation is 52 feet.

The formal official name is the Cos Cob Census Designated Place, but most people and references simply refer to it as Cos Cob, Connecticut.

The U5 Census Class Code for Cos Cob indicates a populated place that is also a census designated place with the same name.. The Census Designated Place has a Functional Status Code "S" which identifies a statistical entity.

The formal boundaries for the Cos Cob Census Designated Place (see map below) encompass a land area of 2.08 sq. miles and a water area of 0.12 sq. miles.

Alternate Unofficial Names for Cos Cob: Cos Cob Village, Lower Landing.

Cos Cob Census Designated Place, CT Boundary Map


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Cos Cob, CT Data & Demographics (As of July 1, 2014)


Total Population 6,960
Population in Households 6,933
Population in Familes 5,979
Population in Group Qrtrs 27
Population Density1 3,355
Diversity Index2 41


Total Households 2,613
Average Household Size 2.65
Family Households 1,874
Average Family Size 3


Total Housing Units 2,758 (100%)
Owner Occupied HU 1,750 (63.5%)
Renter Occupied HU 863 (31.3%)
Vacant Housing Units 145 ( 5.3%)
Median Home Value $739,583
Average Home Value $812,536


Median Household Income $148,757
Average Household Income $193,904
Per Capita Income $73,138
  (Compound Annual Growth Rates)


2010-2014 2014-2019
Population 0.65% 0.81%
Households 0.65% 0.84%
Families 0.41% 0.74%
Median Household Income   4.02%
Per Capita Income   4.52%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood 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.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.


Cos Cob, CT - Peer Comparisons by Rank and Percentile

The table below compares Cos Cob to the other 142 incorporated cities, towns and CDPs in Connecticut by rank and percentile using July 1, 2014 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 # 51 65th
Population Density1 # 21 86th
Diversity Index2 # 39 73rd
Median Household Income # 7 96th
Per Capita Income # 10 94th

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