Jefferson, Iowa 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 Jefferson, IA population of 12,724 people, 87.02% of them (11,072 people) identified their ethnicity as Non-Hispanic - White Alone, 3.21% of them (408 people) identified their ethnicity as Non-Hispanic - Asian Alone, and 3.04% of them (387 people) identified their ethnicity as Non-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 the information in a table below.
You can see similar information for other Iowa counties and also for the state of Iowa.
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Data Source: US Census Bureau, 2020 Census.
Jefferson, IA Voting-age Population By Ethnicity in Census 2020
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| Ethnicity | Voting-age Population | % of County Voting-age Population |
|---|---|---|
| Non-Hispanic - White Alone | 11072 | 87.02 |
| Non-Hispanic - Asian Alone | 408 | 3.21 |
| Non-Hispanic - Two Or More Races | 387 | 3.04 |
| Non-Hispanic - Black or African American Alone | 355 | 2.79 |
| Hispanic - Some Other Race Alone | 176 | 1.38 |
| Hispanic - Two Or More Races | 128 | 1.01 |
| Hispanic - White Alone | 94 | 0.74 |
| Non-Hispanic - Some Other Race Alone | 55 | 0.43 |
| Non-Hispanic - American Indian and Alaska Native Alone | 31 | 0.24 |
| Hispanic - American Indian and Alaska Native Alone | 7 | 0.06 |
| Hispanic - Black or African American Alone | 6 | 0.05 |
| Non-Hispanic - Native Hawaiian And Pacific Islander Alone | 5 | 0.04 |
| Hispanic - Asian Alone | 0 | 0.00 |
| Hispanic - Native Hawaiian And Pacific Islander Alone | 0 | 0.00 |
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