Jefferson, Iowa Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 15.66K population of Jefferson, IA residents comprised of 610 residents who identified as Hispanic or Latino (3.90%), and 15.05K residents who identified as Non-Hispanic (96.11%).

Race: The White Alone population was the largest racial group in Jefferson, IA, with a population of 13.57K (86.61%). The Two Or More Races population was the second largest racial group in Jefferson, IA, with a population of 803 (5.13%). The Asian Alone population was the third largest racial group in Jefferson, IA, with a population of 500 (3.19%). The smallest racial group in Jefferson, IA was Native Hawaiian And Pacific Islander Alone with a population of 9 (0.06%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Jefferson, IA, with a population of 13.43K (85.71%). The Non-Hispanic - Two or More Races population was the second largest ethnic group in Jefferson, IA, with a population of 583 (3.72%). The Non-Hispanic - Asian Alone population was the third largest ethnic group in Jefferson, IA, with a population of 500 (3.19%). The smallest ethnic group in Jefferson, IA was Hispanic - Native Hawaiian & Pac. Islander with a population of 0 (0.00%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in Jefferson, Iowa from the 2020 decennial census.

You can see similar information for other Iowa counties and also for the state of Iowa.

Jefferson, IA Hispanics and Non Hispanics Population in Census 2020
Total Population:
Jefferson, IA Racial Groups in Census 2020
Total Population:
Jefferson, IA Ethnicity Groups in Census 2020
Total Population:
Jefferson, IA Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 419 2.68
White Alone 13565 86.61
American Indian and Alaska Native Alone 55 0.35
Asian Alone 500 3.19
Native Hawaiian And Pacific Islander Alone 9 0.06
Some Other Race Alone 312 1.99
Two Or More Races 803 5.13
Jefferson, IA Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 13425 85.71
Non-Hispanic - Two or More Races 583 3.72
Non-Hispanic - Asian Alone 500 3.19
Non-Hispanic - Black Alone 409 2.61
Hispanic - Some Other Race Alone 228 1.46
Hispanic - Two or More Races 220 1.41
Hispanic - White Alone 140 0.89
Non-Hispanic - Some Other Race Alone 84 0.54
Non-Hispanic - American Indian & Alaska Native 43 0.28
Hispanic - American Indian & Alaska Native 12 0.08
Hispanic - Black Alone 10 0.06
Non-Hispanic - Native Hawaiian & Pac. Islander 9 0.06
Hispanic - Asian Alone 0 0.00
Hispanic - Native Hawaiian & Pac. Islander 0 0.00