Cos Cob CDP, CT Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 7.09K Cos Cob CDP, CT population, 1.51K had Italian ancestry (21.36%), 1.49K had Other Groups ancestry (21.05%), and 1.28K had Irish ancestry (18.03%).
The chart below shows the top 10 ancestry groups, and the table below shows both the number and percentages for all ancestry groups.
You can also see similar information for other Connecticut cities and places, Connecticut counties, and for Connecticut.
Data Source: US Census - ACS 5-Year Estimates (2021).
Cos Cob CDP, CT Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Italian | 1514 | 21.36 |
| Other Groups | 1492 | 21.05 |
| Irish | 1278 | 18.03 |
| Unclassified | 913 | 12.88 |
| English | 788 | 11.12 |
| German | 646 | 9.11 |
| American | 352 | 4.97 |
| Polish | 294 | 4.15 |
| Brazilian | 262 | 3.70 |
| Russian | 189 | 2.67 |
| European | 187 | 2.64 |
| Eastern European | 155 | 2.19 |
| British | 124 | 1.75 |
| Swedish | 124 | 1.75 |
| French (except Basque) | 119 | 1.68 |
| Norwegian | 111 | 1.57 |
| Turkish | 102 | 1.44 |
| Scottish | 86 | 1.21 |
| Austrian | 72 | 1.02 |
| Welsh | 70 | 0.99 |
| Hungarian | 69 | 0.97 |
| Croatian | 68 | 0.96 |
| Czech | 60 | 0.85 |
| Portuguese | 58 | 0.82 |
| Serbian | 53 | 0.75 |
| Greek | 51 | 0.72 |
| Dutch | 48 | 0.68 |
| Northern European | 44 | 0.62 |
| Celtic | 42 | 0.59 |
| Romanian | 41 | 0.58 |
| Lithuanian | 36 | 0.51 |
| Albania | 33 | 0.47 |
| Slovak | 25 | 0.35 |
| Ukrainian | 19 | 0.27 |
| Scotch Irish | 18 | 0.25 |
| Canadian | 17 | 0.24 |
| Danish | 17 | 0.24 |
| Subsaharan African | 17 | 0.24 |
| African | 17 | 0.24 |
| Swiss | 12 | 0.17 |
| Yugoslavian | 10 | 0.14 |
| Belgian | 4 | 0.06 |
| Macedonian | 1 | 0.01 |