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Williamson, IL
Village in Madison County, Illinois.
Population
160
Land area
1.2sq mi
People per sq mi
137
ZIP codes
0
Williamson and its ZIP codes
Williamson at a glance
- Williamson is 40% less dense than Illinois as a whole.
Local data for Williamson, IL
Counts from official public data
Economy and federal money
Jobs, pay, income and spending are for Madison County. PPP loans are for Williamson.
Unemployment rate
3.5%
Aug 2026, -0.9 pts in a year
Average annual pay
$59,911
107,517 jobs, 2025
Income per person
$62,684
BEA, 2024
Federal spending
$1.75B
FY 2026, $6,581 per person
Environment and hazard risk
Williamson, IL, from FEMA, NOAA and EPA
Natural hazard risk
Relatively Moderate
Top: heat wave
Storm events since 1996
854
Countywide, mostly thunderstorm wind
Flood insurance policies
824
0.8% of homes, county
July high / Jan low
89° / 21°F
42.1 inches of rain a year
Health statistics
Share of adults in Williamson, IL, CDC PLACES estimates
Obesity
39.8%
U.S. 33.3% +6.5 pts
Diabetes
12.0%
U.S. 12.1% about the same
Smoking
15.2%
U.S. 12.8% +2.4 pts
Uninsured (18-64)
7.6%
U.S. 11.1% -3.5 pts
Cities near Williamson
| Name | Distance | Land area (sq mi) |
|---|---|---|
| LivingstonVillage | 0.8 mi | 1 |
| StauntonCity | 2.7 mi | 4 |
| New DouglasVillage | 5.3 mi | 1 |
| WordenVillage | 5.4 mi | 0.7 |
| White CityVillage | 6.4 mi | 1.2 |
| Mount OliveCity | 6.6 mi | 1.2 |
| AlhambraVillage | 6.8 mi | 0.8 |
| SawyervilleVillage | 7 mi | 1 |
| WilsonvilleVillage | 7.6 mi | 1 |
| HamelVillage | 7.7 mi | 1.2 |
| BenldCity | 7.8 mi | 1.1 |
| Lake Ka-HoVillage | 8.2 mi | 0.3 |
| Mount ClareVillage | 8.6 mi | 1.5 |
| PrairietownCensus-designated place | 8.6 mi | 0.2 |
| EagarvilleVillage | 9 mi | 0.9 |
| DorchesterVillage | 9.7 mi | 0.7 |
Frequently asked questions
- What county is Williamson, IL in?
- Williamson is in Madison County, Illinois.
- What is the population of Williamson, IL?
- About 160 people live in Williamson, based on American Community Survey 5-year estimates.
- What cities are near Williamson?
- Nearby places include Livingston (0.8 mi), Staunton (2.7 mi), New Douglas (5.3 mi), Worden (5.4 mi), White City (6.4 mi).
Source: U.S. Census Bureau (TIGER/Line boundaries, American Community Survey) · Data as of 12/31/2023