Rock Island County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2015 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2015, the citizen voting-age population for Rock Island County, IL was 107.94K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (88.89K) and constituted 82.35% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (8.27K) and constituted 7.66% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (8.24K), constituting 7.63% of the total citizen voting-age population.

The charts and tables below shows the citizen voting-age population and percentages by race and ethnicity.

You can also see similar information for other Illinois counties, and for Illinois.

Data Source: US Census - ACS 5-Years (CVAP).

See this for other years:

Rock Island County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2015

Non-Hispanic White Alone

Non-Hispanic Black Alone

Hispanic or Latino of All Races

Non-Hispanic Two Or More Races

Non-Hispanic Asian Alone

Non-Hispanic American Indian & Alaska Native Alone

Non-Hispanic Native Hawaiian & Pac. Islander Alone

Rock Island County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2015

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	88890	82.35
Non-Hispanic Black or African American Alone	8265	7.66
Hispanic or Latino of All Races	8235	7.63
Non-Hispanic Two Or More Races	1300	1.20
Non-Hispanic Asian Alone	1040	0.96
Non-Hispanic American Indian and Alaska Native Alone	175	0.16
Non-Hispanic Native Hawaiian And Pacific Islander Alone	35	0.03