Demographics in Cos Cob, CT
Population, age, race, ethnicity, and household statistics — 2023 ACS Data
Where is Cos Cob?
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Population
Source: U.S. Census Bureau ACS (2023)Total Population
7,354
Male
3,573
48.6%
Female
3,781
51.4%
Median Age
39.3
Age Distribution
Source: U.S. Census Bureau ACS (2023)Race & Ethnicity
Source: U.S. Census Bureau ACS (2023)White71.9%
Black2.9%
Hispanic14.2%
Asian5.4%
Two or More12.6%
Other6.9%
Education & Household
Source: U.S. Census Bureau ACS (2023)Bachelor's or Higher
45.6%
High School or Higher
55.4%
Foreign Born
25.2%
Veterans
2.1%
Married
48.7%
Avg Household Size
2.8
Marital Status by Age
Source: U.S. Census Bureau ACS (2023)Cos Cob, CT has a population of 7,354 with a median age of 39.3. The racial makeup is 71.9% White, 14.2% Hispanic, 2.9% Black, 5.4% Asian. About 45.6% of residents hold a bachelor's degree or higher. The foreign-born population is 25.2%.