Rock Island County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018 (ACS-5Yrs)

Updated on March 28, 2026.

Based on the US Census Bureau's special tabulation from the ACS 5-year estimates, in 2018, the citizen voting-age population for Rock Island County, IL was 106.60K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (85.79K) and constituted 80.48% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (9.21K) and constituted 8.64% of the total. The Non-Hispanic Black or African American Alone ethnicity group had the third highest (8.70K), constituting 8.16% 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 2018

Non-Hispanic White Alone

Hispanic or Latino of All Races

Non-Hispanic Black Alone

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 2018

0 of 0

Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	85790	80.48
Hispanic or Latino of All Races	9210	8.64
Non-Hispanic Black or African American Alone	8695	8.16
Non-Hispanic Two Or More Races	1600	1.50
Non-Hispanic Asian Alone	1010	0.95
Non-Hispanic American Indian and Alaska Native Alone	250	0.24
Non-Hispanic Native Hawaiian And Pacific Islander Alone	40	0.04