Grundy County vs Williamson County
A side-by-side comparison of Grundy County and Williamson County: population, income, housing, and more.
Grundy County and Williamson County are counties in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.
Williamson County has the higher population (66,902 vs 52,920 in Grundy County). Grundy County has the higher median household income ($93,060 vs $65,521 in Williamson County). Grundy County has the higher median home value ($259,200 vs $145,600 in Williamson County).
Population, income & housing
| Grundy County | Williamson County | |
|---|---|---|
| Population | 52,920 | 66,902 |
| Median age | 38.6 yrs | 41.4 yrs |
| Median household income | $93,060 | $65,521 |
| Median home value | $259,200 | $145,600 |
| Median gross rent | $1,137 | $897 |
| Housing units | 21,324 | 31,957 |
| Homeownership rate | 75.8% | 71.1% |
| Bachelor's degree or higher | 24.2% | 27.5% |
| Unemployment rate | 4.5% | 4.3% |
Trends (ACS 5-year, 2019–2023)
| Grundy County | Williamson County | |
|---|---|---|
| Population | 50,666 → 52,920 (+4.4%) | 67,102 → 66,902 (-0.3%) |
| Median household income | $77,350 → $93,060 (+20.3%) | $50,734 → $65,521 (+29.1%) |
| Median home value | $199,300 → $259,200 (+30.1%) | $114,900 → $145,600 (+26.7%) |
| Median gross rent | $999 → $1,137 (+13.8%) | $735 → $897 (+22.0%) |
Grundy County
50,66652,920
$77,350$93,060
$199,300$259,200
$999$1,137
Williamson County
67,10266,902
$50,734$65,521
$114,900$145,600
$735$897
Age & race/ethnicity
Age distribution (share)
| Grundy County | Williamson County | |
|---|---|---|
| Under 5 | 5.8% | 5.4% |
| 5 to 17 | 18.9% | 16.1% |
| 18 to 24 | 8.7% | 6.7% |
| 25 to 34 | 11.8% | 12.7% |
| 35 to 44 | 13.6% | 13.5% |
| 45 to 54 | 13.4% | 12.4% |
| 55 to 64 | 13.1% | 13.6% |
| 65 to 74 | 8.9% | 11.5% |
| 75 and over | 5.7% | 8.1% |
Race & ethnicity (share)
| Grundy County | Williamson County | |
|---|---|---|
| White (non-Hispanic) | 83.3% | 88.2% |
| Black or African American | 2.1% | 3.5% |
| American Indian & Alaska Native | 0.1% | 0.3% |
| Asian | 0.4% | 1.5% |
| Native Hawaiian & Pacific Islander | 0.0% | 0.0% |
| Some other race | 0.1% | 0.1% |
| Two or more races | 2.5% | 3.6% |
| Hispanic or Latino | 11.5% | 2.8% |
Educational attainment (age 25+)
Share of adults 25+
| Grundy County | Williamson County | |
|---|---|---|
| No high school diploma | 5.8% | 7.6% |
| High school graduate | 34.0% | 28.1% |
| Some college or associate's | 36.0% | 36.9% |
| Bachelor's degree | 16.3% | 16.5% |
| Graduate or professional degree | 7.9% | 11.0% |
Commute to work
How workers get to work (share)
| Grundy County | Williamson County | |
|---|---|---|
| Drove alone | 83.8% | 81.5% |
| Carpooled | 4.4% | 7.6% |
| Public transit | 0.6% | 0.3% |
| Walked | 0.8% | 0.8% |
| Bicycle | 0.1% | 0.2% |
| Worked from home | 9.7% | 8.6% |
| Other means | 0.7% | 0.9% |
Housing
Units in structure (share)
| Grundy County | Williamson County | |
|---|---|---|
| 1-unit, detached | 71.0% | 73.9% |
| 1-unit, attached | 9.8% | 1.3% |
| 2 to 4 units | 7.6% | 12.2% |
| 5 to 19 units | 5.5% | 3.3% |
| 20 or more units | 2.1% | 1.9% |
| Mobile home & other | 3.9% | 7.4% |
Poverty & households
| Grundy County | Williamson County | |
|---|---|---|
| Poverty rate | 6.3% | 14.3% |
| Average household size | 2.56 | 2.25 |
| Mean commute (minutes) | 28 | 23 |
| Median year structure built | 1990 | 1981 |
Full profiles
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