Williamson County , Illinois
Population: 66,902 residents · 2023 Census ACS
Income $65,521 Home $145,600 Rent $897/mo
Page updated: · Data vintage: CDC PLACES 2023 · FEMA NRI v1.20
Across 66,902 residents, Williamson County tracks on the more affordable end of national norms — useful as a comparison anchor for Illinois and neighboring counties alike. FEMA's National Risk Index ranks Williamson County in the top 14% nationally for overall natural-hazard exposure, with earthquake risk the dominant local risk.
$65,521
Median Income
household
$145,600
Home Value
median
$897/mo
Monthly Rent
median gross
N/A
Unemployment
rate
Income & Housing
| Median Household Income | $65,521 |
| Per Capita Income | $37,096 |
| Poverty Rate | 14.3% |
| Median Home Value | $145,600 |
| Median Gross Rent | $897/mo |
| Owner Occupied | 71.1% |
| Renter Occupied | 28.9% |
Demographics & Education
| Total Population | 66,902 |
| Median Age | 41.4 yrs |
| Bachelor's or Higher | 27.5% |
Health Outcomes
CDC PLACES 2023 · % of adults
39.9%
Obesity
10.0%
Diabetes
14.9%
Smoking
37.2%
High Blood Pressure
24.3%
No Physical Activity
24.0%
Depression
37.2%
Insufficient Sleep
78.4%
Annual Checkup
Natural Hazard Risk
FEMA National Risk Index · county-level scores
Overall risk score: 85.8 · 86th national percentile
🌪️ Tornado
80.31
🌀 Hurricane
44.51
🔥 Wildfire
14.19
❄️ Winter Storm
89.85
🌍 Earthquake
96.34
☀️ Drought
54.23
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