ZIP Code Tabulation Area · Connecticut

ZIP Code 06807: Cos Cob, CT

ZIP Code 06807 (Cos Cob, Fairfield County, Connecticut) has an estimated 7,650 residents in 2,828 households. The median household income is $192,115, the median home value is $1,443,200 and the median gross rent is $2,989/mo. Figures are U.S. Census Bureau American Community Survey 2020–2024 5-year estimates for the matching ZIP Code Tabulation Area.

American Community Survey 2020–2024 5-year estimates · Updated

Total population

7,650

Margin of error ±860

Median household income

$192,115

Margin of error ±$28,835

Median home value

$1,443,200

Margin of error ±$335,443

Median gross rent

$2,989/mo

Margin of error ±$730

Median age

39.4 yrs

Margin of error ±2.5 yrs

Mean travel time to work

28.7 min

Margin of error ±7.0 min

How ZIP 06807 compares with Connecticut and the U.S.

State and national figures are the Census Bureau's own estimates for those areas from the same ACS release, not averages of ZIP codes.

Median age

ZIP 0680739.4 yrsConnecticut41.1 yrsUnited States38.9 yrs

Median household income

ZIP 06807$192,115Connecticut$95,781United States$80,734

Per capita income

ZIP 06807$111,328Connecticut$55,915United States$44,673

Poverty rate

ZIP 068076.1%Connecticut10.0%United States12.5%

Unemployment rate

ZIP 068075.6%Connecticut5.6%United States5.2%

Bachelor's degree or higher

ZIP 0680772.8%Connecticut42.5%United States35.7%

Median home value

ZIP 06807$1,443,200Connecticut$366,900United States$332,700

Median gross rent

ZIP 06807$2,989/moConnecticut$1,488/moUnited States$1,413/mo

Owner-occupied homes

ZIP 0680769.8%Connecticut66.5%United States65.2%

Mean travel time to work

ZIP 0680728.7 minConnecticut26.5 minUnited States26.4 min

Worked from home

ZIP 0680726.5%Connecticut16.0%United States15.1%

All figures for ZIP 06807

Each estimate has a 90% margin of error: the true value is likely within that range. * marks estimates with a large margin of error (a coefficient of variation above 30%, or ±10 percentage points or more for rates).

ZIP 06807 — ACS 2020–2024 5-year estimates
MeasureZIP 06807Margin of errorConnecticutUnited States
Total population7,650±8603,624,508334,922,499
Median age39.4 yrs±2.5 yrs41.1 yrs38.9 yrs
Households2,828±2801,434,007129,227,496
Median household income$192,115±$28,835$95,781$80,734
Per capita income$111,328±$16,436$55,915$44,673
Poverty rate6.1%±3.9 pts10.0%12.5%
Unemployment rate5.6%±3.0 pts5.6%5.2%
Bachelor's degree or higher72.8%±3.5 pts42.5%35.7%
Median home value$1,443,200±$335,443$366,900$332,700
Median gross rent$2,989/mo±$730$1,488/mo$1,413/mo
Owner-occupied homes69.8%±4.6 pts66.5%65.2%
Mean travel time to work28.7 min±7.0 min26.5 min26.4 min
Worked from home26.5%±6.7 pts16.0%15.1%

Race and Hispanic or Latino origin

Shares of the total population by the Census Bureau's race and Hispanic or Latino origin categories (table B03002), listed in the Census Bureau's order. People self-identify on the survey.

Population by race and Hispanic or Latino origin, ZIP 06807
GroupZIP 06807ConnecticutUnited States
White alone, not Hispanic or Latino60.6%61.9%57.4%
Black or African American alone, not Hispanic or Latino4.8%9.8%11.9%
American Indian and Alaska Native alone, not Hispanic or Latino0.3%0.1%0.5%
Asian alone, not Hispanic or Latino7.2%4.7%5.9%
Native Hawaiian and Other Pacific Islander alone, not Hispanic or Latino0.0%0.0%0.2%
Some other race alone, not Hispanic or Latino0.2%0.9%0.6%
Two or more races, not Hispanic or Latino12.7%4.3%4.3%
Hispanic or Latino (of any race)14.3%18.3%19.3%

Where ZIP 06807 is

State
Connecticut
Main county
Fairfield County
Largest overlapping place
Cos Cob (60% of the ZIP's land area)
Land area
3.27 sq mi· about 2,339 people per sq mi

County and place names come from the Census Bureau's 2020 ZCTA relationship files. A ZIP code's mailing city, set by the U.S. Postal Service, can differ from these names.

Other ZIP codes in Fairfield County

06784 Fairfield County, CT06801 Bethel, CT06804 Fairfield County, CT06810 Danbury, CT06811 Danbury, CT06812 Fairfield County, CT06820 Fairfield County, CT06824 Fairfield County, CT06825 Fairfield County, CT06830 Greenwich, CT06831 Fairfield County, CT06840 Fairfield County, CT06850 Norwalk, CT06851 Norwalk, CT06853 Norwalk, CT06854 Norwalk, CT06855 Norwalk, CT06870 Old Greenwich, CT06877 Fairfield County, CT06878 Riverside, CT06880 Staples, CT06883 Fairfield County, CT06890 Southport, CT06896 Fairfield County, CT

See every ZIP code in Connecticut, or compare ZIP 06807 with another ZIP code.

Census figures describe residents as a group and cannot tell you about any one home or street. For a specific address, check local government and housing records.

About ZIP codes and ZCTAs: the Census Bureau publishes statistics for ZIP Code Tabulation Areas, which approximate USPS ZIP code delivery areas. Learn how they differ.

Sources

  • U.S. Census Bureau, American Community Survey 2020–2024 5-year estimates, detailed tables B01003, B01002, B11001, B19013, B19301, B17001, B23025, B15003, B25077, B25064, B25003, B08013, B08303, B08301, B03002 — snapshot Oct 26, 2026.
  • U.S. Census Bureau, 2020 ZCTA5 relationship files (county and place).
  • Data: U.S. Census Bureau, American Community Survey 5-year estimates (detailed tables) and 2020 Census ZCTA relationship files. This product uses the Census Bureau Data API but is not endorsed or certified by the Census Bureau. These agencies do not endorse OpenZIP.