Greenwich 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 13.98K Greenwich CDP, CT population, 4.31K had Other Groups ancestry (30.81%), 2.14K had Italian ancestry (15.31%), and 2.06K had Unclassified ancestry (14.74%).
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).
Greenwich CDP, CT Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 4306 | 30.81 |
| Italian | 2140 | 15.31 |
| Unclassified | 2060 | 14.74 |
| Irish | 2038 | 14.58 |
| English | 1615 | 11.55 |
| American | 783 | 5.60 |
| German | 735 | 5.26 |
| Polish | 376 | 2.69 |
| Dutch | 269 | 1.92 |
| French (except Basque) | 242 | 1.73 |
| Norwegian | 237 | 1.70 |
| Russian | 217 | 1.55 |
| European | 207 | 1.48 |
| Canadian | 206 | 1.47 |
| Scottish | 197 | 1.41 |
| Eastern European | 190 | 1.36 |
| Greek | 161 | 1.15 |
| British | 156 | 1.12 |
| Portuguese | 156 | 1.12 |
| Brazilian | 150 | 1.07 |
| Scotch Irish | 134 | 0.96 |
| Swedish | 134 | 0.96 |
| Israeli | 129 | 0.92 |
| Danish | 128 | 0.92 |
| French Canadian | 126 | 0.90 |
| Northern European | 96 | 0.69 |
| Iranian | 92 | 0.66 |
| Albania | 81 | 0.58 |
| Welsh | 76 | 0.54 |
| Ukrainian | 73 | 0.52 |
| Subsaharan African | 68 | 0.49 |
| Turkish | 62 | 0.44 |
| Hungarian | 60 | 0.43 |
| Swiss | 52 | 0.37 |
| Czech | 45 | 0.32 |
| Slovak | 43 | 0.31 |
| West Indian (except Hispanic groups) | 34 | 0.24 |
| Lithuanian | 32 | 0.23 |
| Austrian | 31 | 0.22 |
| Jamaican | 25 | 0.18 |
| Scandinavian | 23 | 0.17 |
| Lebanese | 19 | 0.14 |
| South African | 19 | 0.14 |
| Romanian | 18 | 0.13 |
| Slovene | 17 | 0.12 |
| Finnish | 12 | 0.09 |
| Ethiopian | 11 | 0.08 |
| African | 11 | 0.08 |
| Syrian | 10 | 0.07 |
| Australian | 9 | 0.06 |