ZIP Code Tabulation Area

06807

Cos Cob, CT · ACS 2020–2024

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Latest estimates

At a glance

U.S. Census Bureau American Community Survey 5-year estimates.

Total population
7,650
Median household income
$192,115
People below poverty
6.1%
Median home value
$1,443,200

Income

The median income of households in 06807 was $192,115. An estimated 4.5% of households had income below $10,000 a year and 49.2% had income of $200,000 or more.

Household Income in 06807 in 2020-2024

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Percent
Less than $10,000 4.5
$10,000 to $14,999 1.5
$15,000 to $24,999 0.7
$25,000 to $34,999 4.2
$35,000 to $49,999 2.7
$50,000 to $74,999 6.3
$75,000 to $99,999 5.1
$100,000 to $149,999 15.7
$150,000 to $199,999 10.3
$200,000 or more 49.2

Median Earnings for Full-Time Year-Round Workers by Sex in 06807 in 2020-2024

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Dollars
Male 157244
Female 110833

An estimated 83.2% of households received earnings. An estimated 22% of households received Social Security and an estimated 20.3 % of households received retirement income other than Social Security. The average income from Social Security was $33,951. These income sources are not mutually exclusive; that is, some households received income from more than one source.

Proportion of Households with Various Income Sources in 06807 in 2020-2024

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Percent
Earnings 83.2
Social Security 22
Retirement income 20.3
Supplemental Security Income (SSI) 2.5
Cash public assistance income 0.7

Poverty and Participation in Government Programs

In 2020-2024, 6.1 % of people were in poverty. An estimated 6% of children under 18 were below the poverty level, compared with 2% of people 65 years old and over. An estimated 7.4% of people 18 to 64 years were below the poverty level.

Poverty Rates in 06807 in 2020-2024

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Percent
People in poverty 6.1
Children under 18 years below poverty 6
People 65 years old and over below poverty 2
People 18 to 64 years below poverty 7.4

In 2020-2024, 1 % of households received SNAP (the Supplemental Nutrition Assistance Program). An estimated 100% of households that received SNAP had children under 18, and 0% of households that received SNAP had one or more people 60 years and over. An estimated 100% of all households receiving SNAP were families with a female householder and no spouse present.


Among the civilian noninstitutionalized population in 06807 in 2020-2024, 94.8% had health insurance coverage and 5.2% did not have health insurance coverage. Private coverage was 78.3% and public coverage was 23.4%, respectively. The percentage of children under the age of 19 with no health insurance coverage was 3.3%.


In 2020-2024, 06807 had a total population of 7,650 - 3,839 (50.2%) females and 3,811 (49.8%) males. The median age was 39.4 years. An estimated 30.3% of the population was under 18 years, 26.9% was 19 to 44 years, 26.4% was 45 to 64 years, and 15.4 % was 65 years and older.

Population by Age and Sex for 06807 in 2020-2024

Male Female
Under 5 447 251
5 to 9 300 223
10 to 14 216 294
15 to 19 283 379
20 to 24 89 161
25 to 29 81 28
30 to 34 146 335
35 to 39 381 345
40 to 44 233 260
45 to 49 288 216
50 to 54 241 239
55 to 59 262 276
60 to 64 253 246
65 to 69 222 259
70 to 74 147 108
75 to 79 95 149
80 to 84 74 50
85 and over 53 20

Hispanic Origin and Race

For people reporting one race alone, 64.2% were White; 4.8% were Black or African American; 7.8% were American Indian and Alaska Native; 7.2% were Asian; 0.5% were Native Hawaiian and Other Pacific Islander, and 0% were Some Other Race. An estimated 16.7% reported Two or More Races. An estimated 14.3% of the people in 06807 were Hispanic or Latino. An estimated 60.6% of the people in 06807 were White alone, non-Hispanic. People of Hispanic origin may be of any race.


Households and Families

In 2020-2024, there were 2,828 households in 06807. The average household size was 2.69 people.

Married-couple households made up 63.6% of the households in 06807 while cohabiting couple households made up 3.8% of households. Female householders with no spouse or partner present were 19.5% of all households, while 13.1% of households had male householders with no spouse or partner present. Some households had one person, as 10.9% of households were male householders living alone, and 10.6% were female householders living alone, for a total of 21.5% of all households.

In 06807, 47.2% of all households had one or more people under the age of 18; 29.2% of all households had one or more people 65 years and over.

Types of Households in 06807 in 2020-2024

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Percent
Married-couple households 63.6
Cohabiting Couples 3.8
Male Householder
No spouse/partner present
13.1
Female Householder
No spouse/partner present
19.5

Marital Status

Among persons 15 and older, 65.2% of males and 57.6% of females were currently married.

Population 15 years and over Percent
Males
Percent
Females
Never married 24.5 26.7
Now married, except separated 65.2 57.6
Separated 0 0.2
Widowed 1.3 3.3
Divorced 9 12.2

Grandparents and Grandchildren

In 06807, 99 grandparents lived with their grandchildren under 18 years old. Of those grandparents, 0% were responsible for the basic needs of their grandchildren.


Nativity and Foreign-Born

In 2020-2024, an estimated 75.3% of the people living in 06807 were U.S. natives. 33% of the 06807 population were living in the state where they were born.

Approximately 24.7% of 06807 residents in 2020-2024 were foreign-born. 52.9% of foreign-born were naturalized U.S. citizens and an estimated 54.3 % entered the country before the year 2010.

Foreign-born residents of 06807 come from different parts of the world. The bar graph below displays the percentage of foreign-born from each world region of birth in 2020-2024 for 06807.

Region of Birth for the Foreign-Born Population in 06807 in 2020-2024

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Percent
Latin America 42.3
Asia 24.7
Europe 24.3
Africa 3.7
Northern America 5
Oceania 0

Language

Among people at least five years old living in 06807 in 2020-2024, 24.9 % spoke a language other than English at home. Spanish was spoken by 7.2% of people at least five years old; 9.3% reported that they did not speak English "very well."

Percentage of the Population 5 years and over who Speak a Language other than English in 06807 in 2020-2024

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Percent
Spanish 7.2
Other Indo-European languages 12.3
Asian and Pacific Islander languages 5.3
Other languages 0.1

Geographic Mobility

In 2020-2024, 89.8 % of the people at least one year old living in 06807 were living in the same house one year earlier.

Geographic Mobility of Residents of 06807 in 2020-2024

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Percent
Same house 89.8
Different house, same county 6.1
Different county, same state 0.3
Different state 3.5
Abroad 0.3

Education

In 2020-2024, 95.3 % of people 25 years and over had at least graduated from high school and 72.8% had a bachelor's degree or higher. An estimated 4.7% did not complete high school.

The total school enrollment in 06807 was 2,120 in 2020-2024. Nursery school enrollment was 235 and kindergarten through 12th grade enrollment was 1,666. College or graduate school enrollment was 219.

Educational Attainment of People in 06807 in 2020-2024

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Percent
Less than high school diploma 4.7
High school diploma or equivalency 13.4
Some college, no degree 4.4
Associate's degree 4.7
Bachelor's degree 32.4
Graduate or professional degree 40.4

Disability

In 06807, among the civilian noninstitutionalized population in 2020-2024, 7 % reported a disability. The likelihood of having a disability varied by age - from 5.6% of people under 18 years old, to 4.7% of people 18 to 64 years old, and to 17.8% of those 65 and over.


Employment Status and Type of Employer

In 06807, 63.9 % of the population 16 and over were employed; 32.3% were not currently in the labor force.

An estimated 88.4% of the people employed were private wage and salary workers; 5.4% were federal, state, or local government workers; and 6.1 % were self-employed in their own (not incorporated) business.

Class of worker Number Percent
Private wage and salary workers 3,247 88.4
Federal, state, or local government workers 200 5.4
Self-employed workers in own not incorporated business 225 6.1

Industries

In 2020-2024, the civilian employed population 16 years and older in 06807 worked in the following industries:

Percent by Industry in 06807 in 2020-2024

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Percent
Agriculture, forestry, fishing and hunting, and mining 0.1
Construction 6.3
Manufacturing 6.1
Wholesale trade 0.4
Retail trade 5
Transportation and warehousing, and utilities 2.2
Information 7.8
Finance and insurance, and real estate and rental and leasing 22.1
Professional, scientific, and management, and administrative and waste management services 19.6
Educational services, and health care and social assistance 20.6
Arts, entertainment, and recreation, and accommodation, and food services 4.8
Other Services, except public administration 5.1
Public administration 0

Occupations

Occupations for the Civilian Employed Population 16 Years and over in 06807 in 2020-2024

Civilian employed population 16 years and over Number Percent
Management, business, sciences, and arts occupations 2,058 56
Service occupations 450 12.3
Sales and office occupations 824 22.4
Natural resources, construction, and maintenance occupations 210 5.7
Production, transportation, and material moving occupations 130 3.5

Commuting to Work

An estimated 55.4% of 06807 workers drove to work alone in 2020-2024, and 4.7% carpooled. Among those who commuted to work, it took them on average 28.7 minutes to get to work.

Percent of Workers 16 and over Commuting by Mode in 06807 in 2020-2024

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Percent
Car, truck, van -- drove alone 55.4
Car, truck, van -- carpooled 4.7
Public transportation (excluding taxicab) 8.8
Walked 2.9
Other means 1.6
Worked from home 26.5

In 2020-2024, 06807 had a total of 2,938 housing units. Of these housing units, 70.7% were single-family houses either not attached to any other structure or attached to one or more structures (commonly referred to as "townhouses" or "row houses"). 29.2% of the housing units were located in multi-unit structures, or those buildings that contained two or more apartments. 0.2% were mobile homes, while any remaining housing units were classified as "other," which included boats, recreational vehicles, vans, etc.

Types of Housing Units in 06807 in 2020-2024

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Percent
Single-family houses 70.7
Apartments in multi-unit structures 29.2
Mobile homes 0.2
Boat, RV, van, etc 0

9% of the housing inventory was comprised of houses built since 2010, while 25.5% of the houses were first built in 1939 or earlier. The median number of rooms in all housing units in 06807 was 6.7 rooms, and of these housing units 77.7% had three or more bedrooms.


In 2020-2024, 06807 had 2,828 housing units that were occupied or had people living in them, while the remaining 110 were vacant. Of the occupied housing units, the percentage of these houses occupied by owners (also known as the homeownership rate) was 69.8% while renters occupied 30.2%. The average household size of owner-occupied houses was 2.69 and in renter-occupied houses it was 2.71.

3.3% of householders of these occupied houses had moved into their house since 2021, while 10.9% moved into their house in 1989 or earlier. Households without a vehicle available for personal use comprised 2.9% and another 17% had three or more vehicles available for use.

The following chart provides the primary fuel used to heat houses in 06807:

House Heating Fuel Used in 06807 in 2020-2024

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Percent
Gas 77.3
Electricity 6.3
Fuel oil, kerosene, etc 16
All other fuels 0.5
No fuel used 0

In 2020-2024, the median property value for owner-occupied houses in 06807 was $1,443,200.

Of the owner-occupied households, 66.4 % had a mortgage. 33.6% owned their houses "free and clear," that is without a primary mortgage or loan on the house. The median monthly housing costs for owners with a mortgage was $4,000+ and for owners without a mortgage it was $1,262.

For renter-occupied houses, the median gross rent for 06807 was $2,989. Gross rent includes the monthly contract rent and any monthly payments made for electricity, gas, water and sewer, and any other fuels to heat the house.