Population By Race and Ethnicity in Mchenry, IL in 2010

Updated on June 16, 2025.

Based on the US Census Vintage data estimates, in 2010, the 309,121 population of Mchenry County, Illinois comprised of 35,406 people who identified as Hispanic (11.45%), and 273,715 people who identified as Non-Hispanic (88.55%).

Race: The White Alone population was the largest racial group in Mchenry County, Illinois with a population of 292,035 (94.47%); Asian Alone population was the second largest racial group with a population of 8,079 (2.61%); and Two Or More Races was the third largest racial group with a population of 3,958 (1.28%).

Ethnicity: The White Alone - Non Hispanic population was the largest ethnic group in Mchenry County, Illinois in 2010, with a population of 258,959 (83.77%); the second largest ethnic group was White Alone - Hispanic with a population of 33,076 (10.7%); and the third largest ethnic group was Asian Alone - Non Hispanic with a population of 7,875 (2.55%).

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, IL in 2010
Total Population:
Race in Mchenry, IL in 2010
Total Population:
Ethnicity in Mchenry, IL in 2010
Total Population:
Population By Race in Mchenry , IL in 2010
Race Population Percentage
Black or African American Alone 3,536 1.14%
White Alone 292,035 94.47%
American Indian and Alaska Native Alone 1,389 0.45%
Asian Alone 8,079 2.61%
Native Hawaiian And Pacific Islander Alone 124 0.04%
Two Or More Races 3,958 1.28%
Population By Ethnicity in Mchenry , IL in 2010
Ethnicity Population Percentage
Black or African American Alone - Hispanic 464 0.15%
White Alone - Hispanic 33,076 10.7%
American Indian and Alaska Native Alone - Hispanic 933 0.3%
Asian Alone - Hispanic 204 0.07%
Native Hawaiian And Pacific Islander Alone - Hispanic 46 0.02%
Two Or More Races - Hispanic 683 0.22%
Black or African American Alone - Non Hispanic 3,072 0.99%
White Alone - Non Hispanic 258,959 83.77%
American Indian and Alaska Native Alone - Non Hispanic 456 0.15%
Asian Alone - Non Hispanic 7,875 2.55%
Native Hawaiian And Pacific Islander Alone - Non Hispanic 78 0.03%
Two Or More Races - Non Hispanic 3,275 1.06%