Population By Race and Ethnicity in Dekalb, IL in 2010

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2010, the 105,151 population of Dekalb County, Illinois comprised of 10,752 people who identified as Hispanic (10.23%), and 94,399 people who identified as Non-Hispanic (89.78%).

Race: The White Alone population was the largest racial group in Dekalb County, Illinois with a population of 93,461 (88.88%); Black or African American Alone population was the second largest racial group with a population of 6,873 (6.54%); and Asian Alone was the third largest racial group with a population of 2,647 (2.52%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Dekalb County, Illinois in 2010, with a population of 83,751 (79.65%); the second largest ethnic group was White Alone - Hispanic with a population of 9,710 (9.23%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 6,593 (6.27%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in Dekalb, Illinois.

You can find similar information for other Illinois counties, and for Illinois.

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Hispanics and Non Hispanics in Dekalb, IL in 2010
Total Population:
Race in Dekalb, IL in 2010
Total Population:
Ethnicity in Dekalb, IL in 2010
Total Population:
Population By Race in Dekalb , IL in 2010
Race Population Percentage
Black or African American Alone 6,873 6.54%
White Alone 93,461 88.88%
American Indian and Alaska Native Alone 409 0.39%
Asian Alone 2,647 2.52%
Native Hawaiian And Pacific Islander Alone 61 0.06%
Two Or More Races 1,700 1.62%
Population By Ethnicity in Dekalb , IL in 2010
Ethnicity Population Percentage
Black or African American Alone - Hispanic 280 0.27%
White Alone - Hispanic 9,710 9.23%
American Indian and Alaska Native Alone - Hispanic 284 0.27%
Asian Alone - Hispanic 172 0.16%
Native Hawaiian And Pacific Islander Alone - Hispanic 22 0.02%
Two Or More Races - Hispanic 284 0.27%
Black or African American Alone - Non Hispanic 6,593 6.27%
White Alone - Non Hispanic 83,751 79.65%
American Indian and Alaska Native Alone - Non Hispanic 125 0.12%
Asian Alone - Non Hispanic 2,475 2.35%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 39 0.04%
Two Or More Races - Non Hispanic 1,416 1.35%