McHenry 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 McHenry County, IL was 215.47K. The Non-Hispanic White Alone ethnicity group had the highest citizen voting-age population (192.93K) and constituted 89.54% of the total.

The Hispanic or Latino of All Races ethnicity group had the second highest citizen voting-age population (13.88K) and constituted 6.44% of the total. The Non-Hispanic Asian Alone ethnicity group had the third highest (4.40K), constituting 2.04% 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 2015

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 2015

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Ethnicity	Voting-age Population	% of Voting-age Pop.
Non-Hispanic White Alone	192930	89.54
Hispanic or Latino of All Races	13875	6.44
Non-Hispanic Asian Alone	4400	2.04
Non-Hispanic Black or African American Alone	2310	1.07
Non-Hispanic Two Or More Races	1870	0.87
Non-Hispanic American Indian and Alaska Native Alone	75	0.04
Non-Hispanic Native Hawaiian And Pacific Islander Alone	10	0.01