Cos Cob, Connecticut Population 2022

6,990
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Cos Cob is a city located in Fairfield County Connecticut. Cos Cob has a 2020 population of 6,990. Cos Cob is currently declining at a rate of 0.00% annually and its population has increased by 3.25% since the most recent census, which recorded a population of 6,770 in 2010.

The average household income in Cos Cob is $214,384 with a poverty rate of 6.68%. The median rental costs in recent years comes to $1,864 per month, and the median house value is $1.04 Mn. The median age in Cos Cob is 42.8 years, 40.3 years for males, and 45 years for females.

Cos Cob Demographics

According to the most recent ACS, the racial composition of Cos Cobwas:

  • White: 84.64%
  • Two or more races: 6.96%
  • Asian: 6.55%
  • Other race: 1.71%
  • Native American: 0.13%
  • Black or African American: 0.00%
  • Native Hawaiian or Pacific Islander: 0.00%
The current population of Cos Cob, Connecticut is 6,990 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 6,990.The last official US Census in 2010 recorded the population at 6,770.

Cos Cob, Connecticut Population 2022

Population by Race

Race Population Percentage
White5,98084.64%
American Indian and Alaska Native90.13%
Asian4636.55%
Some Other Race1211.71%
Two or More Races4926.96%
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Cos Cob Population by Race

Cos Cob Population Pyramid 2022

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Cos Cob Median Age

42.1


Total

41.3


Male

42.6


Female

Cos Cob Adults

There are 5,134 adults, (1,124 of whom are seniors) in Cos Cob.

Cos Cob Age Dependency

Age Dependency Ratio

28

Old Age Dependency Ratio

48.2

Child Dependency Ratio

Cos Cob Sex Ratio

Female

3,704

52.43%

Male

3,361

47.57%

Cos Cob Population by Age

Cos Cob Renter vs Owner Occupied by Household Type

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Cos Cob Household Types

Type Owner Renter
Married73.8%26.2%
All68.1%31.9%
Non Family66.3%33.7%
Male51%49%
Female46.1%53.9%

68.1%

Rate of Home Ownership

Cos Cob Households and Families

Type Count Average Size Owned
All2,5872.7268.1
Married1,5643.3173.8
Male1043.0651
Female2672.9746.1
Non Family6521.1566.3

3.18

Average Family Size

2.72

Average Household Size

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Cos Cob Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1052.23%
9th to 12th Grade1473.12%
High School Graduate76516.21%
Some College3276.93%
Associates Degree2645.59%
Bachelors Degree1,64134.77%
Graduate Degree1,47031.15%
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Cos Cob Educational Attainment by Sex (over 25)

Cos Cob Educational Attainment by Race

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Race Total High School Bachelors
Native American999
Asian308308267
White3,7883,6652,609
Hispanic380357190
Other Race808024
2+ Races22511927

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among native american people with a rate of 100.00%.

Cos Cob Educational Attainment by Race

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Name Average Male Female
Overall$75,345$107,717$59,052
Less Than 9th Grade$26,285$$
High School Graduate$30,735$31,377$30,075
Some College$39,598$60,469$38,036
Bachelors Degree$107,188$158,164$62,464
Graduate Degree$119,737$215,824$82,031

$75,345

Average Earnings

$107,717

Average Male

$59,052

Average Female

Cos Cob Earnings by Educational Attainment

Cos Cob Language by Age

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Cos Cob Language

74.95% of Cos Cob residents speak only English, while 25.05% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 12.27% of the population.

Cos Cob Language

Cos Cob Poverty by Race

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Name Total In Poverty Poverty Rate
Asian455429.23%
White5,3613476.47%
OtherNaN%
Hispanic7447710.35%
Multiple49271.42%

6.68%

Overall Poverty Rate

6.65%

Male Poverty Rate

6.70%

Female Poverty Rate

Poverty in Cos Cob

The race most likely to be in poverty in Cos Cob is Asian, with 9.23% below the poverty level.

The race least likely to be in poverty in Cos Cob is Multiple, with 1.42% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.38%. Among those working part-time, it was 13.95%, and for those that did not work, the poverty rate was 9.29%.

Cos Cob Poverty

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Name Poverty
Less Than 9th Grade6.75%
High School3.40%
Some College15.40%
Bachelors or Greater5.75%

Cos Cob Poverty Rate by Education

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Rate Poverty
Male Employed5.34%
Male Unemployed13.04%
Female Employed5.96%
Female Unemployed4.94%

Cos Cob Poverty Rate by Employment Status and Sex

Cos Cob Income by Household Type

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Name Median Mean
Households$136,642$199,238
Families$181,534$234,466
Married Families$207,083-
Non Families$68,286$91,302
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Income by Household Type

Cos Cob Marital Status

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Marriage Rates

57.0%

Overall Marriage Rate

61.2%

Male Marriage Rate

53.1%

Female Marriage Rate

Cos Cob Married by Age and Sex

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Cos Cob Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 35-44.

Cos Cob Marital Status by Race

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Cos Cob Marital Status

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208

Number of Veterans

Male Veterans

Female Veterans

War Veterans
Second Gulf War4
First Gulf War15
Vietnam115
Korea17
World War II17

Cos Cob Veterans by War

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Age Group Veterans
18 to 344
35 to 547
55 to 6411
65 to 74134
75+52

Cos Cob Veterans by Age

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Cos Cob Veterans by Race

Cos Cob Veterans by Education

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1.44%

Veteran Poverty Rate

19.71%

Veteran Disability Rate

Cos Cob Veterans by Education

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70.5%

Labor Force Participation

66.2%

Employment Rate

6.1%

Unemployment Rate

Cos Cob Employment by Age

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Cos Cob Employment by Race

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Cos Cob Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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39.60%

Born in Cos Cob

78.27%

Native Born

21.73%

Foreign Born

10.81%

Non Citizen

10.91%

Naturalized

Place of Birth

78.27% of Cos Cob residents were born in the United States, with 39.60% having been born in Connecticut. 10.81% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Cos Cob Place of Birth

Note: 2021 and 2022 data is projected
Year Population Growth Annual Growth Rate
20106,7700.00%
20116,542-228-3.37%
20126,605630.96%
20136,346-259-3.92%
20146,265-81-1.28%
20156,4331682.68%
20166,5351021.59%
20176,8403054.67%
20186,9591191.74%
20196,990310.45%
20206,9900.00%
20216,9900.00%
20226,9900.00%

Cos Cob Population by Year