Population By Race and Ethnicity in Rock Island, IL in 2011

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2011, the 147,474 population of Rock Island County, Illinois comprised of 17,443 people who identified as Hispanic (11.83%), and 130,031 people who identified as Non-Hispanic (88.17%).

Race: The White Alone population was the largest racial group in Rock Island County, Illinois with a population of 126,393 (85.71%); Black or African American Alone population was the second largest racial group with a population of 13,797 (9.36%); and Two Or More Races was the third largest racial group with a population of 3,560 (2.41%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Rock Island County, Illinois in 2011, with a population of 110,977 (75.25%); the second largest ethnic group was White Alone - Hispanic with a population of 15,416 (10.45%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 13,051 (8.85%).

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

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

See this for other years:
Hispanics and Non Hispanics in Rock Island, IL in 2011
Total Population:
Race in Rock Island, IL in 2011
Total Population:
Ethnicity in Rock Island, IL in 2011
Total Population:
Population By Race in Rock Island , IL in 2011
Race Population Percentage
Black or African American Alone 13,797 9.36%
White Alone 126,393 85.71%
American Indian and Alaska Native Alone 793 0.54%
Asian Alone 2,869 1.95%
Native Hawaiian And Pacific Islander Alone 62 0.04%
Two Or More Races 3,560 2.41%
Population By Ethnicity in Rock Island , IL in 2011
Ethnicity Population Percentage
Black or African American Alone - Hispanic 746 0.51%
White Alone - Hispanic 15,416 10.45%
American Indian and Alaska Native Alone - Hispanic 504 0.34%
Asian Alone - Hispanic 106 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 13 0.01%
Two Or More Races - Hispanic 658 0.45%
Black or African American Alone - Non Hispanic 13,051 8.85%
White Alone - Non Hispanic 110,977 75.25%
American Indian and Alaska Native Alone - Non Hispanic 289 0.2%
Asian Alone - Non Hispanic 2,763 1.87%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 49 0.03%
Two Or More Races - Non Hispanic 2,902 1.97%