Williamson County, Illinois
Total Population: 66,902
County Seat: Marion
Median Home Value
$145,600
Owner-occupied units
Median Household Income
$65,521
Across all households
Median Age
41.4 yrs
Across all residents
Bachelor's Degree+
27.5%
Adults 25 and older
Nearby Counties
Demographics
14 fieldsRacial & Ethnic Composition
Under 18 Years
21.5%
65 Years and Over
19.6%
Male
50.3%
Female
49.7%
U.S. Citizens (18+)
98.6%
No Health Insurance
5.2%
Education
3 fieldsHigh School Graduate or Higher (25+)
92.4%
Bachelor's Degree or Higher (25+)
27.5%
Enrolled in College (18+)
5.5%
Economics
6 fieldsMedian Household Income
$65,521
Mean Household Income
$85,557
Per Capita Income
$37,096
Unemployment Rate (16+)
4.3%
In Labor Force (19–64)
77.8%
SNAP / Food Stamps
16.3%
Housing & Households
13 fieldsMedian Home Value
$145,600
Median Rent
$897/mo
Total Housing Units
31,957
Owner-Occupied
71.1%
Renter-Occupied
28.9%
Vacancy Rate
10.0%
Married Couple Households
47.3%
Cohabiting Couple Households
7.0%
Male Householder, No Partner
18.4%
Female Householder, No Partner
27.3%
Average Household Size
2.25
Broadband Internet Access
86.8%
Housing Built Since 2010
11.9%
Source: U.S. Census Bureau, American Community Survey 2023 5-Year Estimates. County FIPS 17199.