Williamson County, Illinois
IL · FIPS 17199 · ACS 2024 5-Year Estimates
| Metric | Value | vs National | Rank | Percentile |
|---|---|---|---|---|
| Total Population | 66,876 | — | #820 / 3,222 | |
| Median Household Income | $65,604 | -12.7% | #1,582 / 3,222 | |
| Median Age | 41.6 years | +6.9% | #1,616 / 3,222 | |
| Median Home Value | $156,400 | -44.5% | #2,113 / 3,222 | |
| Median Gross Rent | $930 | -20.0% | #1,278 / 3,222 | |
| Poverty Rate | 13.8% | +9.2% | #1,697 / 3,222 | |
Demographics
Williamson County has a population of 66,876, making it the #820 most populous county in the US. The median age is 41.6 years, which is 6.9% above the national median.
Population Trend
Rankings →Year-over-Year Population Growth
Age & Sex Distribution
Race & Ethnicity
Nativity
Household Type
Economy
The median household income in Williamson County is $65,604, ranking #1,582 out of 3,222 counties — 12.7% below the national median. The poverty rate is 13.8% and unemployment stands at 5.0%.
Median Household Income Trend
Rankings →Poverty Rate Trend
Rankings →Housing
The median home value in Williamson County is $156,400 (-44.5% vs national). Renters pay a median of $930/mo and the homeownership rate is 70.7%.
Median Home Value Trend
Rankings →Health
95.4% of residents in Williamson County have health insurance coverage, which is 4.0% above the national rate.
About Williamson County, Illinois
Williamson County, Illinois has a total population of 66,876, making it the 820th most populous county in the United States. The median age in Williamson County is 41.6 years, which is 6.9% above the national median of 38.9 years.
The median household income in Williamson County is $65,604, which ranks #1,582 of 3,222 counties nationwide. This is 12.7% below the national median of $75,149. The poverty rate is 13.8%, higher than the national rate of 12.6%. The unemployment rate stands at 5.0%.
The median home value in Williamson County is $156,400, 44.5% below the national median. Renters in Williamson County pay a median gross rent of $930 per month. The homeownership rate is 70.7%, compared to the national rate of 64.4%.
In Williamson County, 26.2% of residents aged 25 and older hold a bachelor's degree or higher, 22.1% below the national average of 33.7%. Health insurance coverage stands at 95.4% of the population. The average commute time for workers is 25.3 min.
Williamson County is a diverse community. The largest racial or ethnic group is White (non-Hispanic) at 87.9% of the population, followed by Black (non-Hispanic) (4.3%) and Two or More Races (3.2%).
All data for Williamson County, Illinois comes from the U.S. Census Bureau's American Community Survey (ACS) 5-Year Estimates. These figures are estimates based on survey sampling and are subject to margin of error. For the most detailed and up-to-date data, visit the Census Bureau's official data portal.