Population of McHenry County, Illinois:
Census 2010 and 2000 Interactive Map, Demographics, Statistics, Graphs, Quick Facts
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| McHenry County, Illinois - Overview | 2010 Census | 2000 Census | 2000-2010 Change | ||||||
| Counts | Percentages | Counts | Percentages | Change | Percentages | ||||
| Total Population | |||||||||
| Total Population | 308,760 | 100.00% | 260,077 | 100.00% | 48,683 | 18.72% | |||
| Population by Race | |||||||||
| American Indian and Alaska native alone | 939 | 0.30% | 445 | 0.17% | 494 | 111.01% | |||
| Asian alone | 7,807 | 2.53% | 3,782 | 1.45% | 4,025 | 106.43% | |||
| Black or African American alone | 3,283 | 1.06% | 1,523 | 0.59% | 1,760 | 115.56% | |||
| Native Hawaiian and Other Pacific native alone | 80 | 0.03% | 55 | 0.02% | 25 | 45.45% | |||
| Some other race alone | 13,194 | 4.27% | 7,211 | 2.77% | 5,983 | 82.97% | |||
| Two or more races | 5,200 | 1.68% | 2,821 | 1.08% | 2,379 | 84.33% | |||
| White alone | 278,257 | 90.12% | 244,240 | 93.91% | 34,017 | 13.93% | |||
| Population by Hispanic or Latino Origin (of any race) | |||||||||
| Persons of Hispanic or Latino Origin | 35,249 | 11.42% | 19,602 | 7.54% | 15,647 | 79.82% | |||
| Persons Not of Hispanic or Latino Origin | 273,511 | 88.58% | 240,475 | 92.46% | 33,036 | 13.74% | |||
| Population by Gender | |||||||||
| Male | 153,936 | 49.86% | 130,474 | 50.17% | 23,462 | 17.98% | |||
| Female | 154,824 | 50.14% | 129,603 | 49.83% | 25,221 | 19.46% | |||
| Population by Age | |||||||||
| Persons 0 to 4 years | 19,896 | 6.44% | 21,110 | 8.12% | -1,214 | -5.75% | |||
| Persons 5 to 17 years | 64,279 | 20.82% | 57,386 | 22.07% | 6,893 | 12.01% | |||
| Persons 18 to 64 years | 193,265 | 62.59% | 160,668 | 61.78% | 32,597 | 20.29% | |||
| Persons 65 years and over | 31,320 | 10.14% | 20,913 | 8.04% | 10,407 | 49.76% | |||