United States › Illinois › Williamson County COUNTY · 2000 CENSUS
Williamson County Illinois · 61,296 residents · 420 sq mi
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The short version
Williamson County is home to 61,296 people in Illinois. That trails the Illinois median by roughly 31%. Home values have risen by half since 1990, reaching $61,200. At a median age of 38.8, this is an older place than the country as a whole. 17% of adults hold a bachelor's degree or higher. Owners hold 74% of the housing stock.
At a glance
Lower income
below the US median
US median: $42,589
Older
median age 38.8
US median: 35.2
Less educated
17% hold a bachelor's degree
US average: 24%
Stable housing
home values roughly flat, inflation adjusted
US median home: $120,530
Section 01
Population & growth from 36.1 in 1990
US average: 35.2
Population, 1990 – 2024
57K 60K 63K 66K 68K 1990 2000 2010 2020 2024 Williamson County Age distribution, 2000
BAR + DOT: THIS PLACE · TICK: US AVERAGE
Section 02
Income & economy $31,991
+10%inflation adjusted, since 1990
from $22,043 in 1990
US average: $42,589
from $11,254 in 1990
US average: $21,522
from 15.8% in 1990
US average: 12.4%
$61,200
+16%inflation adjusted, since 1990
from $40,200 in 1990
US average: $120,530
$400
+1%inflation adjusted, since 1990
from $300 in 1990
US average: $602
from 73.7% in 1990
26.4% rent
Section 04
Race & ethnicity 1990
White, non-Hispanic 97.1%(56,051)
Hispanic / Latino 0.6%(367)
2000
White, non-Hispanic 94.6%(58,006)
Hispanic / Latino 1.2%(763)
No data for the years selected.
Section 04 · Origins
Detailed origins & ancestry Detailed origin tables are available for 2024; showing 2024 data.
Hispanic origin
+ 1 more hispanic origin group with data Ancestry
+ 33 more ancestry groups with data from 14.2% in 1990
US average: 24.4%
High school or higher
from 71.8% in 1990
US average: 80.3%
from 5.0% in 1990
US average: 8.8%
Section 06
Commute & transportation from 19.0 min in 1990
US average: 17.6
Section 07
Work & employment No data for the years selected.
Section 08
People & community No data for the years selected.
Marital status
Men 15+
Never married 22.8%(5,437)
Women 15+
Never married 17.2%(4,460)
SHARE WITHIN EACH SEX · POPULATION 15 AND OVER · 2000
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 +77%
Home value $89,000 +45%
Population 36,916 −45%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Johnson County
Income $62,528 +95%
Home value $160,500 +162%
Population 13,363 −80%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Saline County
Income $53,117 +66%
Home value $94,300 +54%
Population 22,772 −66%
SEE FULL COMPARISON →
WILLIAMSON COUNTY VS
Union County
Income $55,728 +74%
Home value $131,700 +115%
Population 16,656 −75%
SEE FULL COMPARISON →
Frequently asked
How many people live in Williamson County, Illinois? Williamson County, Illinois has about 61,296 residents according to the 2000 Census.
What is the median household income in Williamson County, Illinois? The typical household in Williamson County, Illinois earns about $31,991 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 $61,200, and the typical rent is about $400 a month.
How educated are people in Williamson County, Illinois? About 17.2% 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 14.6% 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 3,563 residents, a change of about 6 percent over that period.
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