Population By Race and Ethnicity in Stephenson, IL in 2010

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2010, the 47,606 population of Stephenson County, Illinois comprised of 1,413 people who identified as Hispanic (2.97%), and 46,193 people who identified as Non-Hispanic (97.03%).

Race: The White Alone population was the largest racial group in Stephenson County, Illinois with a population of 41,728 (87.65%); Black or African American Alone population was the second largest racial group with a population of 4,356 (9.15%); and Two Or More Races was the third largest racial group with a population of 1,098 (2.31%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Stephenson County, Illinois in 2010, with a population of 40,523 (85.12%); the second largest ethnic group was Black or African American Alone - Non Hispanic with a population of 4,242 (8.91%); and the third largest ethnic group was White Alone - Hispanic with a population of 1,205 (2.53%).

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

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

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Hispanics and Non Hispanics in Stephenson, IL in 2010
Total Population:
Race in Stephenson, IL in 2010
Total Population:
Ethnicity in Stephenson, IL in 2010
Total Population:
Population By Race in Stephenson , IL in 2010
Race Population Percentage
Black or African American Alone 4,356 9.15%
White Alone 41,728 87.65%
American Indian and Alaska Native Alone 100 0.21%
Asian Alone 306 0.64%
Native Hawaiian And Pacific Islander Alone 18 0.04%
Two Or More Races 1,098 2.31%
Population By Ethnicity in Stephenson , IL in 2010
Ethnicity Population Percentage
Black or African American Alone - Hispanic 114 0.24%
White Alone - Hispanic 1,205 2.53%
American Indian and Alaska Native Alone - Hispanic 32 0.07%
Asian Alone - Hispanic 4 0.01%
Native Hawaiian And Pacific Islander Alone - Hispanic 3 0.01%
Two Or More Races - Hispanic 55 0.12%
Black or African American Alone - Non Hispanic 4,242 8.91%
White Alone - Non Hispanic 40,523 85.12%
American Indian and Alaska Native Alone - Non Hispanic 68 0.14%
Asian Alone - Non Hispanic 302 0.63%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 15 0.03%
Two Or More Races - Non Hispanic 1,043 2.19%