In Williamson, Illinois, the median home price is $161,773, compared with the Illinois median of $298,585; median household income is $65,604; the population is 66,876; schools rate 5.5 out of 10; the violent crime rate is 117.4 per 100k; and the average commute is 23.5 minutes. Sources: Zillow Research and the US Census Bureau.
Data updated June 2026 - Source: Zillow Research
Williamson at a glance
Population
66,876
Median Household Income
$65,604
Typical Home Value
$161,773
School District Rating
5.5
Violent Crime Rate
117.4
Avg Commute Time
23.5
About Williamson
Williamson has a population of 66,876. The median home value is $161,773, 46% below the Illinois median. Median household income is $65,604 (21% below the Illinois median). The most populated towns are Herrin, East Marion, and West Marion.
Data comes from public sources including the U.S. Census Bureau, the National Center for Education Statistics, the FBI, the EPA, Zillow, and Redfin. Source attribution is shown on each metric.
Towns in Williamson
12 towns, by population.
County rankings in Illinois
Every county in Illinois, ranked on one decision metric at a time.
- Cheapest Counties to Buy a House
- Counties With the Lowest Monthly Housing Payment
- Counties With the Lowest Property Tax
- Counties With the Cheapest Homeowners Insurance
- Counties With the Cheapest Childcare
- Safest Counties From Natural Disasters
- Counties With the Lowest Flood Risk
- Counties With the Lowest Wildfire Risk
- Safest Counties (Lowest Violent Crime)
- Counties With the Best School Ratings
- Counties With the Highest Household Income
- Counties With the Shortest Commute
- Counties Where Homes Sell Fastest
Williamson at a glance: frequently asked questions
- What is the population of Williamson?
- Williamson has a population of 66,876 based on the most recent US Census estimate.
- What is the median home price in Williamson?
- The median home value in Williamson is $161,773. Open the interactive map to see the distribution town by town.
- What is the median household income in Williamson?
- Median household income in Williamson is $65,604 per year, sourced from the US Census American Community Survey.
- What state is Williamson in?
- Williamson is in Illinois.
- How many towns are in Williamson?
- Williamson contains 12 towns and municipalities. Click any town below or on the map to see its housing, school, and crime data.
Compare Williamson with other places
Put up to four states, counties, towns, or ZIPs side by side on income, housing, crime, education, and more.