McHenry County vs St. Clair County
A side-by-side comparison of McHenry County and St. Clair County: population, income, housing, and more.
McHenry County and St. Clair County are counties in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
McHenry County has the higher population (311,366 vs 254,777 in St. Clair County). McHenry County has the higher median household income ($102,836 vs $70,178 in St. Clair County). McHenry County has the higher median home value ($286,900 vs $168,800 in St. Clair County).
Population, income & housing
| McHenry County | St. Clair County | |
|---|---|---|
| Population | 311,366 | 254,777 |
| Median age | 40.4 yrs | 39.5 yrs |
| Median household income | $102,836 | $70,178 |
| Median home value | $286,900 | $168,800 |
| Median gross rent | $1,358 | $1,032 |
| Housing units | 120,605 | 115,348 |
| Homeownership rate | 82.6% | 67.8% |
| Bachelor's degree or higher | 35.2% | 30.7% |
| Unemployment rate | 4.7% | 5.7% |
Trends (ACS 5-year, 2019–2023)
| McHenry County | St. Clair County | |
|---|---|---|
| Population | 307,714 → 311,366 (+1.2%) | 262,338 → 254,777 (-2.9%) |
| Median household income | $86,799 → $102,836 (+18.5%) | $55,179 → $70,178 (+27.2%) |
| Median home value | $224,500 → $286,900 (+27.8%) | $128,000 → $168,800 (+31.9%) |
| Median gross rent | $1,197 → $1,358 (+13.5%) | $861 → $1,032 (+19.9%) |
McHenry County
307,714311,366
$86,799$102,836
$224,500$286,900
$1,197$1,358
St. Clair County
262,338254,777
$55,179$70,178
$128,000$168,800
$861$1,032
Age & race/ethnicity
Age distribution (share)
| McHenry County | St. Clair County | |
|---|---|---|
| Under 5 | 5.3% | 5.8% |
| 5 to 17 | 17.7% | 17.4% |
| 18 to 24 | 8.1% | 8.1% |
| 25 to 34 | 11.5% | 12.8% |
| 35 to 44 | 13.1% | 13.2% |
| 45 to 54 | 13.7% | 12.1% |
| 55 to 64 | 14.6% | 13.7% |
| 65 to 74 | 9.9% | 10.3% |
| 75 and over | 6.0% | 6.5% |
Race & ethnicity (share)
| McHenry County | St. Clair County | |
|---|---|---|
| White (non-Hispanic) | 76.9% | 59.5% |
| Black or African American | 1.4% | 27.8% |
| American Indian & Alaska Native | 0.0% | 0.2% |
| Asian | 2.8% | 1.5% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.3% | 0.5% |
| Two or more races | 2.9% | 5.5% |
| Hispanic or Latino | 15.6% | 4.9% |
Educational attainment (age 25+)
Share of adults 25+
| McHenry County | St. Clair County | |
|---|---|---|
| No high school diploma | 6.3% | 7.3% |
| High school graduate | 26.9% | 27.0% |
| Some college or associate's | 31.7% | 35.0% |
| Bachelor's degree | 23.3% | 17.6% |
| Graduate or professional degree | 11.9% | 13.2% |
Commute to work
How workers get to work (share)
| McHenry County | St. Clair County | |
|---|---|---|
| Drove alone | 74.9% | 76.9% |
| Carpooled | 7.1% | 7.7% |
| Public transit | 1.4% | 1.9% |
| Walked | 1.0% | 1.5% |
| Bicycle | 0.1% | 0.1% |
| Worked from home | 14.7% | 10.9% |
| Other means | 0.8% | 1.0% |
Housing
Units in structure (share)
| McHenry County | St. Clair County | |
|---|---|---|
| 1-unit, detached | 77.4% | 71.4% |
| 1-unit, attached | 10.6% | 4.7% |
| 2 to 4 units | 3.7% | 8.0% |
| 5 to 19 units | 5.5% | 8.2% |
| 20 or more units | 2.2% | 3.2% |
| Mobile home & other | 0.7% | 4.6% |
Poverty & households
| McHenry County | St. Clair County | |
|---|---|---|
| Poverty rate | 6.1% | 13.6% |
| Average household size | 2.66 | 2.47 |
| Mean commute (minutes) | 31 | 25 |
| Median year structure built | 1989 | 1975 |
Full profiles
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