Mountainside 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 7.00K Mountainside borough, NJ population, 2.15K had Other Groups ancestry (30.77%), 1.30K had Italian ancestry (18.56%), and 1.08K had Irish ancestry (15.45%).
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).
Mountainside borough, NJ Population By Ancestry in 2021
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| Ancestry | Number of Ancestry | Percentage of Population (%) |
|---|---|---|
| Other Groups | 2155 | 30.77 |
| Italian | 1300 | 18.56 |
| Irish | 1082 | 15.45 |
| German | 967 | 13.81 |
| Unclassified | 805 | 11.50 |
| Polish | 635 | 9.07 |
| American | 402 | 5.74 |
| English | 323 | 4.61 |
| Russian | 225 | 3.21 |
| Norwegian | 204 | 2.91 |
| Portuguese | 132 | 1.89 |
| Ukrainian | 110 | 1.57 |
| European | 105 | 1.50 |
| British | 100 | 1.43 |
| Iranian | 71 | 1.01 |
| Hungarian | 64 | 0.91 |
| West Indian (except Hispanic groups) | 64 | 0.91 |
| Greek | 61 | 0.87 |
| Danish | 57 | 0.81 |
| Swedish | 57 | 0.81 |
| Lithuanian | 56 | 0.80 |
| French (except Basque) | 55 | 0.79 |
| British West Indian | 50 | 0.71 |
| Eastern European | 47 | 0.67 |
| Slovak | 43 | 0.61 |
| Scotch Irish | 40 | 0.57 |
| Scottish | 35 | 0.50 |
| Czech | 27 | 0.39 |
| Welsh | 27 | 0.39 |
| Dutch | 25 | 0.36 |
| Maltese | 23 | 0.33 |
| Trinidadian and Tobagonian | 14 | 0.20 |
| Austrian | 13 | 0.19 |
| French Canadian | 12 | 0.17 |
| Brazilian | 1 | 0.01 |