McHenry 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 McHenry County, IL was 221.10K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (194.56K) and constituted 87.99% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (16.64K) and constituted 7.53% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (4.97K), constituting 2.25% 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:

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

Non-Hispanic White Alone

Hispanic or Latino of All Races

Non-Hispanic Asian Alone

Non-Hispanic Black Alone

Non-Hispanic Two Or More Races

Non-Hispanic American Indian & Alaska Native Alone

Non-Hispanic Native Hawaiian & Pac. Islander Alone

McHenry 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	194555	87.99
Hispanic or Latino of All Races	16640	7.53
Non-Hispanic Asian Alone	4970	2.25
Non-Hispanic Black or African American Alone	2725	1.23
Non-Hispanic Two Or More Races	1965	0.89
Non-Hispanic American Indian and Alaska Native Alone	230	0.10
Non-Hispanic Native Hawaiian And Pacific Islander Alone	15	0.01