Williamson County, Illinois
White alone, not Hispanic or Latino, percent 87.7%
People
Population
Population estimates, July 1, 2025, (V2025) 67,225
Population estimates, July 1, 2024, (V2024) 67,064
Population estimates base, April 1, 2020, (V2025) 67,163
Population estimates base, April 1, 2020, (V2024) 67,154
Population, percent change - April 1, 2020 (estimates base) to July 1, 2025, (V2025) 0.1%
Population, percent change - April 1, 2020 (estimates base) to July 1, 2024, (V2024) -0.1%
Population, Census, April 1, 2020 67,153
Population, Census, April 1, 2010 66,357
Age and Sex
Persons under 5 years, percent 4.7%
Persons under 18 years, percent 20.5%
Persons 65 years and over, percent 20.8%
Female persons, percent 49.7%
Race and Hispanic Origin
White alone, percent 90.3%
Black alone, percent(a) 5.3%
American Indian and Alaska Native alone, percent(a) 0.5%
Asian alone, percent(a) 1.6%
Native Hawaiian and Other Pacific Islander alone, percent(a) Z
Two or More Races, percent 2.2%
Hispanic or Latino, percent(b) 3.1%
White alone, not Hispanic or Latino, percent 87.7%
Population Characteristics
Veterans, 2020-2024 4,588
Foreign-born persons, percent, 2020-2024 2.0%
Housing
Housing Units, July 1, 2025, (V2025) 32,427
Owner-occupied housing unit rate, 2020-2024 70.7%
Median value of owner-occupied housing units, 2020-2024 $156,400
Median selected monthly owner costs - with a mortgage, 2020-2024 $1,374
Median selected monthly owner costs - without a mortage, 2020-2024 $560
Median gross rent, 2020-2024 $930
Building Permits, 2025 141
Families & Living Arrangements
Households, 2020-2024 28,983
Persons per household, 2020-2024 2.23
Living in the same house 1 year ago, percent of persons age 1 year+ , 2020-2024 87.6%
Language other than English spoken at home, percent of persons age 5 years+, 2020-2024 3.3%
Computer and Internet Use
Households with a computer, percent, 2020-2024 92.9%
Households with a broadband Internet subscription, percent, 2020-2024 87.6%
Education
High school graduate or higher, percent of persons age 25 years+, 2020-2024 92.8%
Bachelor's degree or higher, percent of persons age 25 years+, 2020-2024 26.2%
Health
With a disability, under age 65 years, percent, 2020-2024 13.5%
Persons without health insurance, under age 65 years, percent 5.6%
Economy
In civilian labor force, total, percent of population age 16 years+, 2020-2024 58.5%
In civilian labor force, female, percent of population age 16 years+, 2020-2024 56.5%
Total accommodation and food services sales, 2022 ($1,000)(c) 168,312
Total health care and social assistance receipts/revenue, 2022 ($1,000)(c) 1,349,183
Total transportation and warehousing receipts/revenue, 2022 ($1,000)(c) 263,371
Total retail sales, 2022 ($1,000)(c) 1,648,639
Total retail sales per capita, 2022(c) $24,775
Transportation
Mean travel time to work (minutes), workers age 16 years+, 2020-2024 23.5
Income & Poverty
Median households income (in 2024 dollars), 2020-2024 $65,604
Per capita income in past 12 months (in 2024 dollars), 2020-2024 $37,284
Persons in poverty, percent 12.3%
Businesses
Businesses
Total employer establishments, 2023 1,597
Total employment, 2023 26,291
Total annual payroll, 2023 ($1,000) 1,406,123
Total employment, percent change, 2022-2023 4.8%
Total nonemployer establishments, 2023 4,496
All employer firms, Reference year 2023 1,133
Male-owned employer firms, Reference year 2023 547
Female-owned employer firms, Reference year 2023 S
Minority-owned employer firms, Reference year 2023 S
Nonminority-owned employer firms, Reference year 2023 S
Veteran-owned employer firms, Reference year 2023 15
Nonveteran-owned employer firms, Reference year 2023 S
Geography
Geography
Population per square mile, 2020 159.8
Population per square mile, 2010 157.9
Land area in square miles, 2020 420.21
Land area in square miles, 2010 420.15
FIPS Code 17199