Census Dots

McHenry County Demographics

A map of McHenry County's Population by Race

Race
PopulationPercent
White
238,65976.9%
Hispanic
46,70515.1%
Multiracial
10,8813.5%
Asian
8,6692.8%
Black
4,0731.3%
Native American/Other
1,2420.4%

McHenry County, Illinois had a population of 310,229 in 2020. It was 76.9% White, 1.3% Black, 2.8% Asian, 15.1% Hispanic, 0.4% Native American/Other, and 3.5% Multiracial. This map presents the population of McHenry County, with one dot drawn for each person counted in the 2020 Census, color-coded by race.

McHenry County is the 6th most populous county of the 102 counties in Illinois.

McHenry County's White Population

238,659 residents of McHenry County identify as White, or 76.9%. This makes the White share of the population of McHenry County larger than the White share of the population of Illinois (58.3% White). Of the 102 counties in Illinois, McHenry County is ranked #79 in terms of White residents as a share of the population.

McHenry County is more White than neighboring Boone County (68.6% White), Kane County (54.7% White), DeKalb County (71% White), and DuPage County (63.4% White). McHenry County is less White than neighboring Walworth County (82.7% White).

McHenry County's Black Population

4,073 residents of McHenry County identify as Black, or 1.3%. This makes the Black share of the population of McHenry County less than the Black share of the population of Illinois (13.9% Black). Of the 102 counties in Illinois, McHenry County is ranked #56 in terms of Black residents as a share of the population.

McHenry County is more Black than neighboring Walworth County (1.1% Black). McHenry County is less Black than neighboring Boone County (2.2% Black), Kane County (5.1% Black), DeKalb County (8.7% Black), and DuPage County (4.7% Black).

McHenry County's Asian Population

8,669 residents of McHenry County identify as Asian, or 2.8%. This makes the Asian share of the population of McHenry County roughly similar to the Asian share of the population of Illinois (5.8% Asian). Of the 102 counties in Illinois, McHenry County is ranked #11 in terms of Asian residents as a share of the population.

McHenry County is more Asian than neighboring Walworth County (0.9% Asian), Boone County (1.2% Asian), and DeKalb County (2.3% Asian). McHenry County is less Asian than neighboring Kane County (4.1% Asian), and DuPage County (12.8% Asian).

McHenry County's Hispanic Population

46,705 residents of McHenry County identify as Hispanic, or 15.1%. This makes the Hispanic share of the population of McHenry County roughly similar to the Hispanic share of the population of Illinois (18.2% Hispanic). Of the 102 counties in Illinois, McHenry County is ranked #9 in terms of Hispanic residents as a share of the population.

McHenry County is more Hispanic than neighboring Walworth County (11.8% Hispanic), and DeKalb County (13.5% Hispanic). McHenry County is less Hispanic than neighboring Boone County (24.1% Hispanic), Kane County (32.8% Hispanic), and DuPage County (15.5% Hispanic).

McHenry County's Native American/Other Population

1,242 residents of McHenry County identify as American Indian/Alaska Native/Native Hawaiian/Pacific Islander/Other, or 0.4%. This makes the Native American/Other share of the population of McHenry County roughly similar to the Native American/Other share of the population of Illinois (0.5% Native American/Other). Of the 102 counties in Illinois, McHenry County is ranked #54 in terms of Native American/Other residents as a share of the population.

McHenry County is less Native American/Other than neighboring Walworth County (0.5% Native American/Other), Boone County (0.5% Native American/Other), and DuPage County (0.5% Native American/Other).

McHenry County's Multiracial Population

10,881 residents of McHenry County identify as Multiracial, or 3.5%. This makes the Multiracial share of the population of McHenry County roughly similar to the Multiracial share of the population of Illinois (3.2% Multiracial). Of the 102 counties in Illinois, McHenry County is ranked #44 in terms of Multiracial residents as a share of the population.

McHenry County is more Multiracial than neighboring Walworth County (3% Multiracial), Boone County (3.4% Multiracial), Kane County (2.9% Multiracial), and DuPage County (3.2% Multiracial). McHenry County is less Multiracial than neighboring DeKalb County (4.1% Multiracial).

Source: 2020 Census State Redistricting Data and Census TIGER/Line Shapefiles.