Population By Race and Ethnicity in Dekalb, IL in 2015

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2015, the 104,238 population of Dekalb County, Illinois comprised of 11,165 people who identified as Hispanic (10.71%), and 93,073 people who identified as Non-Hispanic (89.29%).

Race: The White Alone population was the largest racial group in Dekalb County, Illinois with a population of 91,221 (87.51%); Black or African American Alone population was the second largest racial group with a population of 7,686 (7.37%); and Asian Alone was the third largest racial group with a population of 2,861 (2.75%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Dekalb County, Illinois in 2015, with a population of 81,151 (77.85%); the second largest ethnic group was White Alone - Hispanic with a population of 10,070 (9.66%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 7,376 (7.08%).

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 2015
Total Population:
Race in Dekalb, IL in 2015
Total Population:
Ethnicity in Dekalb, IL in 2015
Total Population:
Population By Race in Dekalb , IL in 2015
Race Population Percentage
Black or African American Alone 7,686 7.37%
White Alone 91,221 87.51%
American Indian and Alaska Native Alone 431 0.41%
Asian Alone 2,861 2.75%
Native Hawaiian And Pacific Islander Alone 72 0.07%
Two Or More Races 1,967 1.89%
Population By Ethnicity in Dekalb , IL in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 310 0.3%
White Alone - Hispanic 10,070 9.66%
American Indian and Alaska Native Alone - Hispanic 279 0.27%
Asian Alone - Hispanic 163 0.16%
Native Hawaiian And Pacific Islander Alone - Hispanic 29 0.03%
Two Or More Races - Hispanic 314 0.3%
Black or African American Alone - Non Hispanic 7,376 7.08%
White Alone - Non Hispanic 81,151 77.85%
American Indian and Alaska Native Alone - Non Hispanic 152 0.15%
Asian Alone - Non Hispanic 2,698 2.59%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 43 0.04%
Two Or More Races - Non Hispanic 1,653 1.59%