United States › Connecticut › Cos Cob CITY · 2020 ACS
Cos Cob Connecticut · 6,873 residents · 2.15 sq mi
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The short version
Cos Cob is home to 6,873 people in Connecticut. This is an unusually credentialed place: 66% of adults have a four-year degree. The typical home is worth $1,038,900. Households here earn about 71% more than in Connecticut as a whole. Median household income runs $136,642, well clear of the $66,278 US median. Renters pay $1,864 a month at the median.
At a glance
Wealthier
above the US median
US median: $66,278
Older
median age 42.8
US median: 38.8
More educated
66% hold a bachelor's degree
US average: 33%
Stable housing
home values roughly flat, inflation adjusted
US median home: $265,253
Section 01
Population & growth from 42.8 in 2019
US average: 38.8
Population, 2010 – 2024
6K 7K 7K 7K 8K 2010 2020 2024 Cos Cob Age distribution, 2020
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Section 02
Income & economy $136,642
−10%inflation adjusted, since 2019
from $149,375 in 2019
US average: $66,278
from $78,625 in 2019
US average: $35,364
Households earning $100K+
from 71.7% in 2019
US average: 43.9%
from 6.5% in 2019
US average: 12.8%
Workforce by industry, 2020
Public administration 14.9%
Arts, entertainment, food 6.1%
Transportation & warehousing 3.6%
Professional, scientific, technical 2.4%
Agriculture, forestry, fishing 0.3%
Education & health services 0.1%
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$1,038,900
−3%inflation adjusted, since 2019
from $1,055,400 in 2019
US average: $265,253
$1,864
−7%inflation adjusted, since 2019
from $1,979 in 2019
US average: $1,124
from 68.5% in 2019
29.8% rent
from 2.76 people in 2019
US average: 2.61
from 7.1 in 2019
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2019
White, non-Hispanic 75.4%(5,269)
Hispanic / Latino 11.9%(829)
2020
White, non-Hispanic 74.9%(5,149)
Hispanic / Latino 10.5%(723)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 22 more ancestry groups with data from 71.2% in 2019
US average: 32.9%
High school or higher
from 96.3% in 2019
US average: 88.5%
from 33.4% in 2019
US average: 12.7%
Section 06
Commute & transportation from 34.3 min in 2019
US average: 26.9
from 62.1% in 2019
US average: 75.1%
from 3.9% in 2019
US average: 8.4%
Section 07
Work & employment from 5.1% in 2019
US average: 5.4%
from 68.0% in 2019
US average: 63.4%
Women 20-64 in the labor force
US average: 73.3%
from 57.6% in 2019
US average: 39.3%
Section 08
People & community from 22.9% in 2019
US average: 13.5%
from 3.3% in 2019
US average: 8.8%
Computer in household
US average: 91.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage from 3.3% in 2019
US average: 8.8%
Direct-purchase
US average: 13.7%
VA health care
US average: 2.3%
Any private
US average: 68.1%
Any public
US average: 35.2%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2020
Gulf War (2001 or later) 1.9%(4)
Share of the 208 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
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Drill deeper
Places similar to Cos Cob Head to head
Compare Cos Cob to nearby cities COS COB VS
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COS COB VS
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Frequently asked
How many people live in Cos Cob, Connecticut? Cos Cob, Connecticut has about 6,873 residents according to the 2020 American Community Survey.
What is the median household income in Cos Cob, Connecticut? The typical household in Cos Cob, Connecticut earns about $136,642 a year. Half of households make more than that, and half make less.
Is Cos Cob, Connecticut expensive? In Cos Cob, Connecticut, the median home is worth about $1,038,900, and the typical rent is about $1,864 a month.
How educated are people in Cos Cob, Connecticut? About 65.9% of adults age 25 and over in Cos Cob, Connecticut hold a bachelor's degree or higher.
What is the poverty rate in Cos Cob, Connecticut? About 6.7% of people in Cos Cob, Connecticut live below the federal poverty line.
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