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Cos Cob, CT
Census-designated place in Western Connecticut Planning Region, Connecticut. ZIP codes: 06807.
Population
7,546
Land area
2.2sq mi
People per sq mi
3,506
ZIP codes
1
Cos Cob and its ZIP codes
Cos Cob at a glance
- Cos Cob is about 4.7 times as dense as Connecticut as a whole.
- The median household income is $190,481, 99% above the Connecticut median of $95,781.
- A typical owner-occupied home is valued at $1,210,400 (about 3.3 times the Connecticut figure) and median rent is $3,067 a month.
Local data for Cos Cob, CT
Counts from official public data
Housing and community stats
Cos Cob, CT, American Community Survey 2020-2024
Median household income
$190,481
Poverty rate
5.6%
Median home value
$1,210,400
Median rent
$3,067/mo
Homeownership
66.7%
Bachelor's or higher
70.2%
Median age
39.6
Average commute
28.9 min
Largest reported origins and ancestries: Italian Americans (1,509), Irish Americans (1,488), Puerto Ricans (537).
Economy and federal money
Jobs, pay, income and spending are for Western Connecticut Planning Region. PPP loans are for Cos Cob.
Unemployment rate
4.5%
Sep 2026, +1.0 pts in a year
Average annual pay
$135,554
289,915 jobs, 2025
Income per person
$165,513
BEA, 2024
PPP loans
$25.8M
414 loans, 2,463 jobs reported
How people get to work
Cos Cob, CT, workers 16 and older. American Community Survey 5-year estimates
- Drove alone52.0%
- Carpooled4.5%
- Public transit9.6%
- Walked2.9%
- Bicycle0.0%
- Taxi, ride-hailing, motorcycle or other1.1%
- Worked from home30.0%
Average one-way commute: 28.9 minutes for people who do not work from home.
Environment and hazard risk
Cos Cob, CT, from FEMA, NOAA and EPA
Natural hazard risk
Relatively High
Top: strong wind
Storm events since 1996
1,793
Countywide, mostly thunderstorm wind
Flood insurance policies
5,431
3.3% of homes, county
July high / Jan low
85° / 22°F
51.6 inches of rain a year
Hazards, floods and storm historyCheck a flood zone2 historic places
Health statistics
Share of adults in Cos Cob, CT, CDC PLACES estimates
Obesity
22.5%
U.S. 33.3% -10.8 pts
Diabetes
7.6%
U.S. 12.1% -4.5 pts
Smoking
6.7%
U.S. 12.8% -6.1 pts
Uninsured (18-64)
5.7%
U.S. 11.1% -5.4 pts
ZIP codes in Cos Cob
1 in or overlapping Cos Cob. Population shown
Cities near Cos Cob
| Name | Distance | Land area (sq mi) |
|---|---|---|
| RiversideCensus-designated place | 1.3 mi | 2.4 |
| Old GreenwichCensus-designated place | 2 mi | 2 |
| Indian FieldCensus-designated place | 2 mi | 0.9 |
| GreenwichCensus-designated place | 2.2 mi | 4.8 |
| Rock RidgeCensus-designated place | 3.2 mi | 0.9 |
| StamfordCity | 3.7 mi | 37.6 |
| PemberwickCensus-designated place | 3.9 mi | 0.7 |
| GlenvilleCensus-designated place | 4 mi | 0.8 |
| ByramCensus-designated place | 4.7 mi | 0.8 |
| Rye Brook, NYVillage | 4.8 mi | 3.4 |
| Port Chester, NYVillage | 5 mi | 2.3 |
| Noroton HeightsCensus-designated place | 5.2 mi | 0.9 |
| NorotonCensus-designated place | 5.2 mi | 1.8 |
| TokenekeCensus-designated place | 6.1 mi | 2.3 |
| Harrison, NYVillage | 6.6 mi | 16.8 |
| Darien DowntownCensus-designated place | 6.7 mi | 0.8 |
Frequently asked questions
- What county is Cos Cob, CT in?
- Cos Cob is in Western Connecticut Planning Region, Connecticut.
- What ZIP codes are in Cos Cob, CT?
- ZIP codes in or overlapping Cos Cob include 06807.
- What is the population of Cos Cob, CT?
- About 7,546 people live in Cos Cob, based on American Community Survey 5-year estimates.
- What cities are near Cos Cob?
- Nearby places include Riverside (1.3 mi), Old Greenwich (2 mi), Indian Field (2 mi), Greenwich (2.2 mi), Rock Ridge (3.2 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023