Cook 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 Cook County, IL was 3.55M. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (1.76M) and constituted 49.67% of the total.

The Non-Hispanic Black or African American Alone ethnicity group had the second highest citizen voting-age population (914.04K) and constituted 25.78% of the total. The Hispanic or Latino of All Races ethnicity group had the third highest (613.42K), constituting 17.30% 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:

Cook County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018

Non-Hispanic White Alone

Non-Hispanic Black Alone

Hispanic or Latino of All Races

Non-Hispanic Asian Alone

Non-Hispanic Two Or More Races

Non-Hispanic American Indian & Alaska Native Alone

Non-Hispanic Native Hawaiian & Pac. Islander Alone

Cook County, Illinois Citizen Voting-age Population By Race and Ethnicity in 2018

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	1761235	49.67
Non-Hispanic Black or African American Alone	914035	25.78
Hispanic or Latino of All Races	613415	17.30
Non-Hispanic Asian Alone	208445	5.88
Non-Hispanic Two Or More Races	43560	1.23
Non-Hispanic American Indian and Alaska Native Alone	4390	0.12
Non-Hispanic Native Hawaiian And Pacific Islander Alone	955	0.03