COUNTY · 1990 CENSUS

Williamson County

Illinois · 57,733 residents · 420.21 sq mi

Time machine

VIEWING

COMPARE TO

The short version

Williamson County has notably lower household income than the US average, with a median household income of $22,043. Population has declined 6% since 2000. Median home value is $40,200. Households here earn about 32% less than the Illinois median.

At a glance

Lower income

below the US median

US median: $30,130

Older

median age 36.1

US median: 33.0

Less educated

14% hold a bachelor's degree

US average: 20%

More affordable

home values down 13%, inflation adjusted

US median home: $93,722

Section 01

Population & growth

Total population

57,733

−6%vs 2000

vs 61,296 in 2000

1990 – 2025

Population density

137 / sq mi

−6%vs 2000

vs 146 / sq mi in 2000

US average: 221

Median age

36.1

−7%vs 2000

vs 38.8 in 2000

US average: 33.0

Population, 1990 – 2024

202467K

Section 02

Income & economy

Median household income

$22,043

−9%inflation adjusted, since 2000

vs $31,991 in 2000

US average: $30,130

1990 – 2024

Per capita income

$11,254

−37%vs 2000

vs $17,779 in 2000

US average: $14,340

Poverty rate

15.8%

+1.2 ptsvs 2000

vs 14.6% in 2000

US average: 13.2%

Section 03

Housing

Median home value

$40,200

−13%inflation adjusted, since 2000

vs $61,200 in 2000

US average: $93,722

1990 – 2024

Median gross rent

$300

−1%inflation adjusted, since 2000

vs $400 in 2000

US average: $450

Owner-occupied

73.7%

+0.1 ptsvs 2000

vs 73.6% in 2000

26.3% rent

Afford Score

1.8

−5%vs 2000

vs 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)

1990

White, non-Hispanic97.1%(56,051)

Black1.9%(1,113)

Hispanic / Latino0.6%(367)

Asian0.6%(347)

Other0.4%(222)

Diversity Score8.6%(4,967)

Diversity Score

−16%vs 2000

vs 10 in 2000

1990 – 2024

Section 05

Education

Bachelor's degree or higher

14.2%

−2.9 ptsvs 2000

vs 17.2% in 2000

US average: 20.3%

High school or higher

71.8%

−8.0 ptsvs 2000

vs 79.8% in 2000

US average: 75.2%

Graduate degree

5.0%

−1.1 ptsvs 2000

vs 6.1% in 2000

US average: 7.1%

Section 06

Commute & transportation

Average commute

19.0 min

+31%vs 2000

vs 14.5 min in 2000

US average: 21.9

Section 07

Work & employment

No data for the years selected.

Section 08

People & community

No data for the years selected.

Drill deeper

Places similar to Williamson County

Head to head

Compare Williamson County to nearby counties

WILLIAMSON COUNTY VS

Franklin County

Income$56,740+157%

Home value$89,000+121%

Population36,916−45%

SEE FULL COMPARISON →

WILLIAMSON COUNTY VS

Johnson County

Income$62,528+184%

Home value$160,500+299%

Population13,363−80%

SEE FULL COMPARISON →

WILLIAMSON COUNTY VS

Saline County

Income$53,117+141%

Home value$94,300+135%

Population22,772−66%

SEE FULL COMPARISON →

WILLIAMSON COUNTY VS

Union County

Income$55,728+153%

Home value$131,700+228%

Population16,656−75%

SEE FULL COMPARISON →

Frequently asked

How many people live in Williamson County, Illinois?

Williamson County, Illinois has about 57,733 residents according to the 1990 Census.

What is the median household income in Williamson County, Illinois?

The typical household in Williamson County, Illinois earns about $22,043 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 $40,200, and the typical rent is about $300 a month.

How educated are people in Williamson County, Illinois?

About 14.2% 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 15.8% of people in Williamson County, Illinois live below the federal poverty line.

DATA: US CENSUS BUREAU ACS 5-YEAR + DECENNIAL CENSUS · UPDATED 2024

How we source and harmonize this data →

Williamson County

Population & growth

Income & economy

Housing

Race & ethnicity

Education

Commute & transportation

Work & employment

People & community

Places similar to Williamson County

Compare Williamson County to nearby counties

How many people live in Williamson County, Illinois?

What is the median household income in Williamson County, Illinois?

Is Williamson County, Illinois expensive?

How educated are people in Williamson County, Illinois?

What is the poverty rate in Williamson County, Illinois?

Explore from here