Mchenry, Illinois Census 2020 Population By Race and Ethnicity

Updated on February 22, 2026.

According to the data from the US 2020 decennial Census, in April 2020, the 310.23K population of Mchenry, IL residents comprised of 46.71K residents who identified as Hispanic or Latino (15.06%), and 263.52K residents who identified as Non-Hispanic (84.95%).

Race: The White Alone population was the largest racial group in Mchenry, IL, with a population of 247.89K (79.91%). The Two Or More Races population was the second largest racial group in Mchenry, IL, with a population of 28.21K (9.09%). The Some Other Race Alone population was the third largest racial group in Mchenry, IL, with a population of 19.44K (6.27%). The smallest racial group in Mchenry, IL was Native Hawaiian And Pacific Islander Alone with a population of 61 (0.02%).

Ethnicity: The Non-Hispanic - White Alone population was the largest ethnic group in Mchenry, IL, with a population of 238.66K (76.93%). The Hispanic - Some Other Race Alone population was the second largest ethnic group in Mchenry, IL, with a population of 18.57K (5.99%). The Hispanic - Two or More Races population was the third largest ethnic group in Mchenry, IL, with a population of 17.33K (5.59%). The smallest ethnic group in Mchenry, IL was Hispanic - Native Hawaiian & Pac. Islander with a population of 16 (0.01%).

The charts and tables below shows the population and percentage of each racial group and ethnicity group in Mchenry, Illinois from the 2020 decennial census.

You can see similar information for other Illinois counties and also for the state of Illinois.

Mchenry, IL Hispanics and Non Hispanics Population in Census 2020
Total Population:
Mchenry, IL Racial Groups in Census 2020
Total Population:
Mchenry, IL Ethnicity Groups in Census 2020
Total Population:
Mchenry, IL Population of Racial Groups in Census 2020
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Race Population % of County Population
Black or African American Alone 4284 1.38
White Alone 247894 79.91
American Indian and Alaska Native Alone 1534 0.49
Asian Alone 8803 2.84
Native Hawaiian And Pacific Islander Alone 61 0.02
Some Other Race Alone 19440 6.27
Two Or More Races 28213 9.09
Mchenry, IL Population of Ethnicity Groups in Census 2020
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Ethnicity Population % of County Population
Non-Hispanic - White Alone 238659 76.93
Hispanic - Some Other Race Alone 18568 5.99
Hispanic - Two or More Races 17332 5.59
Non-Hispanic - Two or More Races 10881 3.51
Hispanic - White Alone 9235 2.98
Non-Hispanic - Asian Alone 8669 2.79
Non-Hispanic - Black Alone 4073 1.31
Hispanic - American Indian & Alaska Native 1209 0.39
Non-Hispanic - Some Other Race Alone 872 0.28
Non-Hispanic - American Indian & Alaska Native 325 0.11
Hispanic - Black Alone 211 0.07
Hispanic - Asian Alone 134 0.04
Non-Hispanic - Native Hawaiian & Pac. Islander 45 0.02
Hispanic - Native Hawaiian & Pac. Islander 16 0.01