Mountainside Borough, New Jersey Voting-age Population By Ethnicity in Census 2020
Updated on February 22, 2026.
According to the data from the US 2020 decennial Census, in April 2020, among Mountainside Borough, NJ voting-age population of 5,457 people, 80.89% of them (4,414 people) identified their ethnicity as Non-Hispanic - White Alone, 6.34% of them (346 people) identified their ethnicity as Non-Hispanic - Asian Alone, and 5.33% of them (291 people) identified their ethnicity as Hispanic - Two Or More Races.
The first chart below shows the voting-age population by ethnicity and the second chart shows the percentage of the voting-age population for each ethnicity. You can also find this information in a table below.
You can see similar information for other New Jersey cities and places and also for the state of New Jersey.
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Data Source: US Census Bureau, 2020 Census.
Mountainside Borough, NJ Voting-age Population By Ethnicity in Census 2020
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| Ethnicity | Voting-age Population | % of Place Voting-age Population |
|---|---|---|
| Non-Hispanic - White Alone | 4414 | 80.89 |
| Non-Hispanic - Asian Alone | 346 | 6.34 |
| Hispanic - Two Or More Races | 291 | 5.33 |
| Non-Hispanic - Two Or More Races | 108 | 1.98 |
| Non-Hispanic - Black or African American Alone | 106 | 1.94 |
| Hispanic - Some Other Race Alone | 89 | 1.63 |
| Hispanic - White Alone | 63 | 1.15 |
| Non-Hispanic - Some Other Race Alone | 27 | 0.50 |
| Hispanic - Asian Alone | 6 | 0.11 |
| Hispanic - Black or African American Alone | 4 | 0.07 |
| Hispanic - American Indian and Alaska Native Alone | 3 | 0.06 |
| Non-Hispanic - American Indian and Alaska Native Alone | 0 | 0.00 |
| Non-Hispanic - Native Hawaiian And Pacific Islander Alone | 0 | 0.00 |
| Hispanic - Native Hawaiian And Pacific Islander Alone | 0 | 0.00 |
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