Cos Cob, CT 06807 ZIP Code Profile

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Cos Cob, CT

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ZIP Code 06807: Basic Data & USPS Preferred City Name

Preferred Name, USPS
Cos Cob, CT 06807

  • ZIP Code Type: STANDARD
  • County: Fairfield County
  • Centroid: Latitude 41.05, Longitude -73.59
  • Time Zone: Eastern Time Zone (UTC -5 hours)
  • Observes DST: Yes
  • Businesses Addresses: 354
  • PO Box Addresses: 124
  • Residential Addresses: 2,821
    • Multi-Family Addresses: 65
    • Single Family Addresses: 2,756

The ZIP Code maps and database are updated 4 times per year.
Database updated: February 1, 2018, Maps updated: February 1, 2018.

EXTREMELY LOCAL Demographic Data

Address Based Hyperlocal Data Input an address and get data & demographics for the pertinent census block group (CBG), a searchable map and a customized directory. The CBG is the smallest geographical unit used by the Census Bureau for reporting demographic data.


06807 ZIP Code Map

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Cos Cob, CT 06807 Data & Demographics (As of July 1, 2017)


Total Population 7,284
Daytime Population: Workers 2,030
Daytime Population: Residents 4,036
Total Daytime Population (TDP) 6,066
Ratio TDP/Total Population1 0.83
Population in Households 7,260
Population in Familes 6,291
Population in Group Qrtrs 24
Population Density2 2,108
Diversity Index3 43


Median Household Income $155,402
Average Household Income $213,052
Per Capita Income $79,119


Total Housing Units 2,852 (100%)
Owner Occupied HU 1,850 (64.9%)
Renter Occupied HU 852 (29.9%)
Vacant Housing Units 150 ( 5.3%)
Median Home Value $1,000,001
Average Home Value $1,007,662


Total Households 2,702
Average Household Size 2.69
Family Households 1,966
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 0.75% 0.71%
Households 0.54% 0.6%
Families 0.49% 0.58%
Median Household Income   1.02%
Per Capita Income   1.78%

Cos Cob, CT 06807 - Peer Comparisons by Rank and Percentile

The table below compares 06807 to the other 275 ZIP Codes 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 # 160 42nd
Population Density # 68 76th
Diversity Index # 79 72nd
Median Household Income # 12 96th
Per Capita Income # 14 95th

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

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