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COUNTY · 2010 ACS

Williamson County

Illinois · 66,357 residents · 420.21 sq mi
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The short version

Williamson County has lower-than-average household income, with a median household income of $40,579. Population has held roughly steady since 2000. Median home value is $87,600. Households here earn about 27% less than the Illinois median.

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

Total population
66,357
+8%since 2000
from 61,296 in 2000
1990 – 2025
Population density
158 / sq mi
+8%since 2000
from 146 / sq mi in 2000
US average: 261
Median age
40.1
+3%since 2000
from 38.8 in 2000
US average: 37.2
Population, 1990 – 2024
57K60K63K66K68K1990201020202024Williamson County
202467K
1990201020202024
Section 02

Income & economy

Median household income
$40,579
Unchangedinflation adjusted, since 2000
from $31,991 in 2000
US average: $52,703
1990 – 2024
Per capita income
$22,164
+25%since 2000
from $17,779 in 2000
US average: $27,286
Households earning $100K+
21.6%
+1.9 ptssince 2009
from 19.7% in 2009
US average: 33.3%
Poverty rate
16.7%
+2.1 ptssince 2000
from 14.6% in 2000
US average: 13.8%
Income inequality (Gini)
0.443
US average: 0.461
Workforce by industry, 2010
Information14.2%
US avg: 11.5%
Retail trade8.6%
US avg: 10.9%
Wholesale trade7%
US avg: 7.2%
Other services6.3%
US avg: 7%
Finance & insurance4.8%
US avg: 5.1%
Public administration4.4%
US avg: 4.9%
Professional, scientific, technical3.5%
US avg: 4.2%
Agriculture, forestry, fishing2.5%
US avg: 1.9%
Transportation & warehousing1.8%
US avg: 3.1%
Arts, entertainment, food1.7%
US avg: 2.4%
Manufacturing1.7%
US avg: 0.5%
Education & health services1.3%
US avg: 0.9%
Construction0.8%
US avg: 1.4%
BARS: THIS PLACE · TICKS: US AVERAGE
Section 03

Housing

Median home value
$87,600
+13%inflation adjusted, since 2000
from $61,200 in 2000
US average: $225,659
1990 – 2024
Median gross rent
$586
+16%inflation adjusted, since 2000
from $400 in 2000
US average: $853
Owner-occupied
41.2%
−32.5 ptssince 2000
from 73.6% in 2000
28.5% rent
Vacancy rate
12.5%
+1.0 ptssince 2009
from 11.4% in 2009
US average: 12.1%
Owner cost-burdened
18.7%
−0.8 ptssince 2009
from 19.6% in 2009
US average: 30.9%
Renter cost-burdened
43.3%
+1.5 ptssince 2009
from 41.8% in 2009
US average: 46.8%
Afford Score
2.2
+13%since 2000
from 1.9 in 2000
1990 – 2024
RELATED:See current rent listings in Williamson County on RentDataNow
Section 04

Race & ethnicity

2000
White, non-Hispanic94.6%(58,006)
Black2.4%(1,498)
Hispanic / Latino1.2%(763)
Asian0.5%(304)
Other0%
Diversity Score10.3%(6,291)
2010
White, non-Hispanic91.5%(60,719)
Black3.8%(2,514)
Hispanic / Latino2%(1,301)
Asian0.8%(557)
Other1.8%(1,183)
Diversity Score19.8%(13,138)
Diversity Score
20
+93%since 2000
from 10 in 2000
1990 – 2024
Section 05

Education

Bachelor's degree or higher
21.7%
+4.6 ptssince 2000
from 17.2% in 2000
US average: 27.9%
High school or higher
88.2%
+8.5 ptssince 2000
from 79.8% in 2000
US average: 84.9%
Graduate degree
8.0%
+2.0 ptssince 2000
from 6.1% in 2000
US average: 10.2%
Section 06

Commute & transportation

Average commute
20.4 min
+40%since 2000
from 14.5 min in 2000
US average: 25.2
Drive alone to work
86.8%
Unchangedsince 2009
from 86.8% in 2009
US average: 76.2%
Carpooled to work
8.2%
+0.4 ptssince 2009
from 7.8% in 2009
US average: 10.4%
Public transit
0.3%
+0.2 ptssince 2009
from 0.1% in 2009
US average: 4.7%
Worked from home
2.0%
−0.2 ptssince 2009
from 2.2% in 2009
US average: 4.1%
Walked to work
1.9%
−0.2 ptssince 2009
from 2.1% in 2009
US average: 2.8%
Biked to work
0.2%
Unchangedsince 2009
from 0.2% in 2009
US average: 0.5%
No vehicle available
6.1%
Unchangedsince 2009
from 6.1% in 2009
US average: 8.7%
Section 07

Work & employment

Self-employed
14.8%
+0.2 ptssince 2009
from 14.6% in 2009
US average: 12.9%
Management & professional
31.4%
−30.5 ptssince 2009
from 61.9% in 2009
US average: 35.2%
Section 08

People & community

Male
49.4%
+0.8 ptssince 2009
from 48.6% in 2009
Female
50.6%
−0.8 ptssince 2009
from 51.4% in 2009
Foreign born
1.5%
Unchangedsince 2009
from 1.5% in 2009
US average: 12.8%
Veterans
13.1%
−35.1 ptssince 2009
from 48.2% in 2009
US average: 9.9%
Drill deeper

Places similar to Williamson County

Adams County
Pop 64,267
Tehama County
Pop 64,665
Crawford County
Pop 62,657
Gordon County
Pop 61,701
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%
Population36,916−45%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Johnson County
Income$62,528+54%
Home value$160,500+83%
Population13,363−80%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Saline County
Income$53,117+31%
Home value$94,300+8%
Population22,772−66%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Union County
Income$55,728+37%
Home value$131,700+50%
Population16,656−75%
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.

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18 census tracts
Census Tract 202.01Census Tract 214Census Tract 203Census Tract 213Census Tract 209Census Tract 207Census Tract 206Census Tract 208.02Census Tract 212Census Tract 205Census Tract 201Census Tract 204Census Tract 211Census Tract 202.02Census Tract 208.01Census Tract 210.01Census Tract 210.02Census Tract 210.03
12 ZIP codes
ZIP 62959ZIP 62948ZIP 62918ZIP 62951ZIP 62902ZIP 62922ZIP 62974ZIP 62933ZIP 62949ZIP 62915ZIP 62921ZIP 62841
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DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

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