Mendham borough, NJ Population By Ancestry in 2021 (ACS-5Yrs)
Updated on March 7, 2024.
Based on the US Census ACS-5Yrs estimates, in 2021, among the 4.98K Mendham borough, NJ population, 1.21K had Irish ancestry (24.24%), 946 had German ancestry (19.01%), and 896 had Italian ancestry (18.01%).
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 New Jersey cities and places, New Jersey counties, and for New Jersey.
Data Source: US Census - ACS 5-Year Estimates (2021).
Mendham borough, NJ Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Irish | 1206 | 24.24 |
| German | 946 | 19.01 |
| Italian | 896 | 18.01 |
| Unclassified | 638 | 12.82 |
| English | 625 | 12.56 |
| Other Groups | 590 | 11.86 |
| Polish | 231 | 4.64 |
| British | 209 | 4.20 |
| European | 200 | 4.02 |
| French (except Basque) | 141 | 2.83 |
| American | 125 | 2.51 |
| Celtic | 111 | 2.23 |
| Russian | 105 | 2.11 |
| Dutch | 91 | 1.83 |
| Scottish | 89 | 1.79 |
| Swedish | 77 | 1.55 |
| Eastern European | 66 | 1.33 |
| Hungarian | 53 | 1.07 |
| Slovak | 52 | 1.05 |
| French Canadian | 30 | 0.60 |
| Czech | 29 | 0.58 |
| Ukrainian | 27 | 0.54 |
| Danish | 25 | 0.50 |
| Norwegian | 22 | 0.44 |
| Lebanese | 18 | 0.36 |
| Scandinavian | 16 | 0.32 |
| Welsh | 11 | 0.22 |
| Finnish | 10 | 0.20 |
| Northern European | 9 | 0.18 |
| Scotch Irish | 9 | 0.18 |
| Albania | 8 | 0.16 |
| Belgian | 8 | 0.16 |
| Greek | 8 | 0.16 |
| Lithuanian | 8 | 0.16 |
| Canadian | 7 | 0.14 |
| Slavic | 3 | 0.06 |