Population By Race and Ethnicity in McHenry County, IL in 2020

Updated on January 29, 2024.

Based on the US Census Vintage data estimates, in 2020, the 309,886 population of McHenry County, Illinois comprised of 44,191 people who identified as Hispanic (14.26%), and 265,695 people who identified as Non-Hispanic (85.74%).

Race: The White Alone population was the largest racial group in McHenry County, Illinois with a population of 287,768 (92.86%); Asian Alone population was the second largest racial group with a population of 9,422 (3.04%); and Black or African American Alone was the third largest racial group with a population of 5,548 (1.79%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in McHenry County, Illinois in 2020, with a population of 246,800 (79.64%); the second largest ethnic group was White Alone - Hispanic with a population of 40,968 (13.22%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 9,130 (2.95%).

The charts and tables below shows the population and percentage of each racial and ethnicity group in McHenry, Illinois.

You can find similar information for other Illinois counties, and for Illinois.

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Hispanics and Non Hispanics in McHenry County, IL in 2020
Total Population:
Race in McHenry County, IL in 2020
Total Population:
Ethnicity in McHenry County, IL in 2020
Total Population:
Population By Race in McHenry , IL in 2020
Race Population Percentage
Black or African American Alone 5,548 1.79%
White Alone 287,768 92.86%
American Indian and Alaska Native Alone 1,657 0.54%
Asian Alone 9,422 3.04%
Native Hawaiian And Pacific Islander Alone 173 0.06%
Two Or More Races 5,318 1.72%
Population By Ethnicity in McHenry , IL in 2020
Ethnicity Population Percentage
Black or African American Alone - Hispanic 727 0.24%
White Alone - Hispanic 40,968 13.22%
American Indian and Alaska Native Alone - Hispanic 1,181 0.38%
Asian Alone - Hispanic 292 0.09%
Native Hawaiian And Pacific Islander Alone - Hispanic 61 0.02%
Two Or More Races - Hispanic 962 0.31%
Black or African American Alone - Non Hispanic 4,821 1.56%
White Alone - Non Hispanic 246,800 79.64%
American Indian and Alaska Native Alone - Non Hispanic 476 0.15%
Asian Alone - Non Hispanic 9,130 2.95%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 112 0.04%
Two Or More Races - Non Hispanic 4,356 1.41%