United States › Illinois › Williamson County COUNTY · 2010 ACS
Williamson County Illinois · 66,357 residents · 420 sq mi
Time machine
COMPARE TO 1990 Census 2000 Census 2009 ACS 2011 ACS 2012 ACS 2013 ACS 2014 ACS 2015 ACS 2016 ACS 2017 ACS 2018 ACS 2019 ACS 2020 ACS 2021 ACS 2022 ACS 2023 ACS 2024 ACS
The short version
Williamson County is home to 66,357 people in Illinois. Median home value sits at $87,600. The foreign-born share is 1%. That trails the Illinois median by roughly 27%. 22% of adults hold a bachelor's degree or higher. 71% of homes are owner-occupied.
At a glance
Lower income
below the US median
US median: $52,703
Older
median age 40.1
US median: 37.2
Less educated
22% hold a bachelor's degree
US average: 28%
Stable housing
home values roughly flat, inflation adjusted
US median home: $225,659
Section 01
Population & growth from 38.8 in 2000
US average: 37.2
Population, 1990 – 2024
57K 60K 63K 66K 68K 1990 2000 2010 2020 2024 Williamson County Age distribution, 2010
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $40,579
Unchangedinflation adjusted, since 2000
from $31,991 in 2000
US average: $52,703
from $17,779 in 2000
US average: $27,286
Households earning $100K+
from 19.7% in 2009
US average: 33.3%
from 14.6% in 2000
US average: 13.8%
Workforce by industry, 2010
Public administration 4.4%
Professional, scientific, technical 3.5%
Agriculture, forestry, fishing 2.5%
Transportation & warehousing 1.8%
Arts, entertainment, food 1.7%
Education & health services 1.3%
BAR + DOT: THIS PLACE · TICK: US AVERAGE
$87,600
+13%inflation adjusted, since 2000
from $61,200 in 2000
US average: $225,659
$586
+16%inflation adjusted, since 2000
from $400 in 2000
US average: $853
from 73.6% in 2000
28.5% rent
from 11.4% in 2009
US average: 12.1%
from 2.38 people in 2009
US average: 2.60
from 19.6% in 2009
US average: 30.9%
from 41.8% in 2009
US average: 46.8%
from 2.2 in 2009
Years of local income it takes to buy a local home, on a scale of about 0 to 15. Lower is more affordable.
Section 04
Race & ethnicity 2000
White, non-Hispanic 94.6%(58,006)
Hispanic / Latino 1.2%(763)
2010
White, non-Hispanic 91.5%(60,719)
Hispanic / Latino 2%(1,301)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Ancestry
+ 35 more ancestry groups with data from 17.2% in 2000
US average: 27.9%
High school or higher
from 79.8% in 2000
US average: 84.9%
from 6.1% in 2000
US average: 10.2%
Section 06
Commute & transportation from 14.5 min in 2000
US average: 25.2
from 86.8% in 2009
US average: 76.2%
from 7.8% in 2009
US average: 10.4%
from 0.1% in 2009
US average: 4.7%
from 2.2% in 2009
US average: 4.1%
from 2.1% in 2009
US average: 2.8%
from 0.2% in 2009
US average: 0.5%
from 6.1% in 2009
US average: 8.7%
Section 07
Work & employment from 14.6% in 2009
US average: 12.9%
from 30.2% in 2009
US average: 35.2%
Section 08
People & community from 1.5% in 2009
US average: 12.8%
from 13.6% in 2009
US average: 9.9%
Marital status (2024)
Men 15+
Never married 31.5%(8,689)
Women 15+
Never married 23.3%(6,438)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2024
Section 09
Health coverage Showing 2024 (the nearest year with coverage data).
from 11.9% in 2013
US average: 8.4%
from 58.4% in 2020
US average: 54.8%
Direct-purchase
from 11.2% in 2020
US average: 13.8%
from 21.7% in 2020
US average: 18.4%
from 21.6% in 2020
US average: 20.9%
VA health care
from 4.3% in 2020
US average: 2.2%
Any private
from 68.1% in 2020
US average: 67.1%
Any public
from 41.4% in 2020
US average: 36.7%
Shares are "alone or in combination": a person with both Medicare and Medicaid counts in each, so categories overlap and do not sum to 100%.
Section 09 · Service history
Veterans Veterans by period of service, 2024
Gulf War (2001 or later) 26.8%(1,231)
Gulf War (1990s) 29.4%(1,351)
Share of the 4,588 veterans here. A veteran who served across eras counts in each, so shares can total more than 100%. Peacetime-only service is included in the total but not shown as an era.
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Drill deeper
Places similar to Williamson County Head to head
Compare Williamson County to nearby counties WILLIAMSON COUNTY VS
Franklin County
Income $56,740 +40%
Home value $89,000 +2%
Population 36,916 −45%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Johnson County
Income $62,528 +54%
Home value $160,500 +83%
Population 13,363 −80%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Saline County
Income $53,117 +31%
Home value $94,300 +8%
Population 22,772 −66%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Union County
Income $55,728 +37%
Home value $131,700 +50%
Population 16,656 −75%
SEE FULL COMPARISON →
Frequently asked
How many people live in Williamson County, Illinois? Williamson County, Illinois has about 66,357 residents according to the 2010 American Community Survey.
What is the median household income in Williamson County, Illinois? The typical household in Williamson County, Illinois earns about $40,579 a year. Half of households make more than that, and half make less.
Is Williamson County, Illinois expensive? In Williamson County, Illinois, the median home is worth about $87,600, and the typical rent is about $586 a month.
How educated are people in Williamson County, Illinois? About 21.7% of adults age 25 and over in Williamson County, Illinois hold a bachelor's degree or higher.
What is the poverty rate in Williamson County, Illinois? About 16.7% of people in Williamson County, Illinois live below the federal poverty line.
Has Williamson County, Illinois grown since 1990? Yes, Williamson County, Illinois has grown since 1990. The population has added about 8,624 residents, a change of about 15 percent over that period.
Keep going
Explore from here 