CITY
Cos Cob
Connecticut · 7,546 residents · 2.152 sq mi
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The short version
Cos Cob is significantly wealthier than the US average, with a median household income of $190,481. Population has held roughly steady since 2023. 70% of adults hold a bachelor's degree or higher, well above the national rate of 36%. Median home value is $1,210,400. Poverty is rare here, at 5.6% of residents. It ranks in the top 1% of US cities for household income.
At a glance
Wealthier
above the US median
US median: $82,259
Mid-age
median age 39.6
US median: 38.9
More educated
70% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Section 01
Population & growth
Population, 2010 – 2024
20248K
Age distribution, 2024
Under 58.2%(618)
5 to 97%(527)
10 to 146.1%(463)
15 to 199.7%(734)
20 to 243.5%(265)
25 to 348.5%(642)
35 to 4415.3%(1,151)
45 to 5413.5%(1,019)
55 to 6412.7%(961)
65 to 7410.1%(761)
75 to 844.5%(341)
85 and over0.8%(64)
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy
$190,481
+5%inflation adjusted, since 2023
from $176,602 in 2023
US average: $82,259
2010 – 2024
Households earning $100K+
80.3%
−0.1 ptssince 2023
from 80.4% in 2023
US average: 53.3%
Workforce by industry, 2024
Other services21%
Public administration15.2%
Wholesale trade9.2%
Arts, entertainment, food7.5%
Retail trade5.4%
Information4.5%
Finance & insurance2.7%
Professional, scientific, technical2.2%
Transportation & warehousing0.8%
Education & health services0.6%
Agriculture, forestry, fishing0.1%
Construction0.1%
Manufacturing0%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 03
Housing
$1,210,400
+2%inflation adjusted, since 2023
from $1,149,500 in 2023
US average: $376,019
2010 – 2024
6.4
−2%since 2023
from 6.5 in 2023
2010 – 2024
Our index: median home value divided by median household income. Lower is more affordable.
39
Our index, 0 to 100. Higher means faster recent growth in incomes, home values, and college degrees.
RELATED:See current rent listings in Cos Cob on RentDataNow
Section 04
Race & ethnicity
2023
White, non-Hispanic67.2%(4,944)
Black2.9%(211)
Hispanic / Latino14.2%(1,043)
Asian5.4%(394)
Other10.4%(762)
2024
White, non-Hispanic64.4%(4,863)
Black3.1%(237)
Hispanic / Latino15%(1,131)
Asian6.5%(494)
Other10.9%(821)
68
+6%since 2023
from 64 in 2023
2011 – 2024
Our index, 0 to 100. Higher means a more even mix of racial and ethnic groups.
Section 04 · Origins
Detailed origins & ancestry
Hispanic origin
Puerto Rican7.1%(537)
South American5.5%(412)
Colombian2.5%(185)
Chilean1.8%(137)
Dominican1.2%(88)
Peruvian0.6%(49)
Spaniard0.5%(40)
Mexican0.3%(21)
Argentine0.3%(21)
Uruguayan0.3%(20)
Central American0.2%(15)
Guatemalan0.2%(15)
Asian origin
Japanese3.7%(282)
Chinese1.1%(84)
Asian Indian0.8%(60)
Thai0.6%(45)
Korean0.1%(11)
Taiwanese0.1%(7)
Filipino0.1%(5)
Pacific Islander origin
Native Hawaiian0.1%(8)
Ancestry
Italian20%(1,509)
Irish19.7%(1,488)
English13.1%(991)
West Indian5%(375)
German4.9%(367)
Jamaican4.7%(353)
American4.2%(316)
Brazilian3.6%(273)
Polish2.1%(156)
Swedish1.6%(124)
Scottish1.6%(120)
Greek1.4%(107)
+ 23 more ancestry groups with data
Russian0.9%(67)
Norwegian0.8%(62)
French0.8%(57)
Swiss0.7%(54)
Serbian0.7%(52)
Subsaharan African0.5%(38)
Hungarian0.4%(29)
Slovak0.4%(29)
Croatian0.4%(28)
Dutch0.3%(24)
Haitian0.3%(22)
Portuguese0.3%(21)
Lithuanian0.3%(20)
Canadian0.3%(19)
French Canadian0.3%(19)
Scotch-Irish0.3%(19)
Welsh0.2%(14)
Austrian0.2%(12)
Finnish0.1%(10)
Romanian0.1%(10)
Ukrainian0.1%(9)
Czech0.1%(8)
Belgian0%(1)
Section 05
Education
High school or higher
95.3%
−0.9 ptssince 2023
from 96.1% in 2023
US average: 89.6%
Section 06
Commute & transportation
Section 07
Work & employment
Section 08
People & community
Marital status
Men 15+
Never married26.5%(747)
Married63.9%(1,804)
Widowed1.3%(38)
Divorced8.3%(234)
Women 15+
Never married30%(933)
Married54.8%(1,706)
Widowed3.5%(110)
Divorced11.7%(366)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
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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 7,546 residents according to the 2024 American Community Survey.
What is the median household income in Cos Cob, Connecticut?
The typical household in Cos Cob, Connecticut earns about $190,481 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 $1,210,400, and the typical rent is about $3,067 a month.
How educated are people in Cos Cob, Connecticut?
About 70.2% 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 5.6% of people in Cos Cob, Connecticut live below the federal poverty line.
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ConnecticutDATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024