Population By Race and Ethnicity in Rock Island County, IL in 2015

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2015, the 146,161 population of Rock Island County, Illinois comprised of 18,240 people who identified as Hispanic (12.48%), and 127,921 people who identified as Non-Hispanic (87.52%).

Race: The White Alone population was the largest racial group in Rock Island County, Illinois with a population of 122,225 (83.62%); Black or African American Alone population was the second largest racial group with a population of 15,255 (10.44%); and Two Or More Races was the third largest racial group with a population of 4,097 (2.8%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Rock Island County, Illinois in 2015, with a population of 106,222 (72.68%); the second largest ethnic group was White Alone - Hispanic with a population of 16,003 (10.95%); and the third largest ethnic group was Black or African American Alone - Non Hispanic with a population of 14,435 (9.88%).

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 County, IL in 2015
Total Population:
Race in Rock Island County, IL in 2015
Total Population:
Ethnicity in Rock Island County, IL in 2015
Total Population:
Population By Race in Rock Island , IL in 2015
Race Population Percentage
Black or African American Alone 15,255 10.44%
White Alone 122,225 83.62%
American Indian and Alaska Native Alone 835 0.57%
Asian Alone 3,687 2.52%
Native Hawaiian And Pacific Islander Alone 62 0.04%
Two Or More Races 4,097 2.8%
Population By Ethnicity in Rock Island , IL in 2015
Ethnicity Population Percentage
Black or African American Alone - Hispanic 820 0.56%
White Alone - Hispanic 16,003 10.95%
American Indian and Alaska Native Alone - Hispanic 558 0.38%
Asian Alone - Hispanic 120 0.08%
Native Hawaiian And Pacific Islander Alone - Hispanic 13 0.01%
Two Or More Races - Hispanic 726 0.5%
Black or African American Alone - Non Hispanic 14,435 9.88%
White Alone - Non Hispanic 106,222 72.68%
American Indian and Alaska Native Alone - Non Hispanic 277 0.19%
Asian Alone - Non Hispanic 3,567 2.44%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 49 0.03%
Two Or More Races - Non Hispanic 3,371 2.31%