United States › Connecticut › Cos Cob CITY · 2010 ACS
Cos Cob Connecticut · 6,770 residents · 2.15 sq mi
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The short version
Cos Cob is home to 6,770 people in Connecticut. This is an unusually credentialed place: 65% of adults have a four-year degree. The typical home is worth $969,100. Households here earn about 88% more than in Connecticut as a whole. Median household income runs $127,297, well clear of the $52,703 US median. Renters pay $2,001 a month at the median.
At a glance
Wealthier
above the US median
US median: $52,703
Older
median age 40.8
US median: 37.2
More educated
65% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01
Population & growth vs 43.4 in 2011
US average: 37.2
Population, 2010 – 2024
6K 7K 7K 7K 8K 2010 2020 2024 Cos Cob Age distribution, 2010
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Section 02
Income & economy $127,297
−6%inflation adjusted, since 2011
vs $139,861 in 2011
US average: $52,703
vs $74,357 in 2011
US average: $27,286
Households earning $100K+
vs 73.5% in 2011
US average: 33.3%
vs 3.1% in 2011
US average: 13.8%
vs 0.484 in 2011
US average: 0.461
Workforce by industry, 2010
Public administration 18.8%
Professional, scientific, technical 5.1%
Arts, entertainment, food 4.6%
Transportation & warehousing 2.8%
Education & health services 1.9%
Agriculture, forestry, fishing 0%
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$969,100
+5%inflation adjusted, since 2011
vs $953,200 in 2011
US average: $225,659
$2,001
+3%inflation adjusted, since 2011
vs $2,001 in 2011
US average: $853
vs 78.2% in 2011
30.3% rent
vs 8.0% in 2011
US average: 12.1%
vs 2.74 people in 2011
US average: 2.60
vs 34.2% in 2011
US average: 30.9%
vs 23.6% in 2011
US average: 46.8%
vs 6.8 in 2011
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 2011
White, non-Hispanic 82.4%(5,389)
2010
White, non-Hispanic 80%(5,418)
Hispanic / Latino 7.5%(507)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 19 more ancestry groups with data vs 63.4% in 2011
US average: 27.9%
High school or higher
vs 94.7% in 2011
US average: 84.9%
vs 29.3% in 2011
US average: 10.2%
Section 06
Commute & transportation vs 32.5 min in 2011
US average: 25.2
vs 60.3% in 2011
US average: 76.2%
vs 7.9% in 2011
US average: 10.4%
vs 24.5% in 2011
US average: 4.7%
vs 5.9% in 2011
US average: 4.1%
vs 0.6% in 2011
US average: 2.8%
vs 0.0% in 2011
US average: 0.5%
vs 1.3% in 2011
US average: 8.7%
Section 07
Work & employment vs 9.6% in 2011
US average: 12.9%
vs 58.4% in 2011
US average: 35.2%
Section 08
People & community vs 22.1% in 2011
US average: 12.8%
vs 4.9% in 2011
US average: 9.9%
Marital status (2024)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 5.3% in 2013
US average: 8.4%
from 65.9% in 2020
US average: 54.8%
Direct-purchase
from 18.1% in 2020
US average: 13.8%
from 15.2% in 2020
US average: 18.4%
from 12.2% in 2020
US average: 20.9%
VA health care
from 0.2% in 2020
US average: 2.2%
Any private
from 79.5% in 2020
US average: 67.1%
Any public
from 26.9% in 2020
US average: 36.7%
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, 2024
Gulf War (2001 or later) 2.4%(4)
Share of the 164 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
Port Chester
Income $92,222 −28%
Home value $582,600 −40%
Population 32,303 +328%
SEE FULL COMPARISON →
COS COB VS
Rye Brook
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Home value $1,016,100 +5%
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COS COB VS
Harrison
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COS COB VS
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Income $239,815 +88%
Home value $1,819,900 +88%
Population 16,614 +120%
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Frequently asked
How many people live in Cos Cob, Connecticut? Cos Cob, Connecticut has about 6,770 residents according to the 2010 American Community Survey.
What is the median household income in Cos Cob, Connecticut? The typical household in Cos Cob, Connecticut earns about $127,297 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 $969,100, and the typical rent is about $2,001 a month.
How educated are people in Cos Cob, Connecticut? About 64.7% 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 3.1% of people in Cos Cob, Connecticut live below the federal poverty line.
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