Whiteside County vs Williamson County

A side-by-side comparison of Whiteside County and Williamson County: population, income, housing, and more.

Whiteside County and Williamson County are counties in Illinois. This page compares them across population, income, housing, education, commuting, and how each has changed since 2019.

Williamson County has the higher population (66,902 vs 55,192 in Whiteside County). Williamson County has the higher median household income ($65,521 vs $64,536 in Whiteside County). Williamson County has the higher median home value ($145,600 vs $125,800 in Whiteside County).

Population, income & housing

	Whiteside County	Williamson County
Population	55,192	66,902
Median age	43.4 yrs	41.4 yrs
Median household income	$64,536	$65,521
Median home value	$125,800	$145,600
Median gross rent	$808	$897
Housing units	25,850	31,957
Homeownership rate	75.5%	71.1%
Bachelor's degree or higher	20.1%	27.5%
Unemployment rate	4.6%	4.3%

Trends (ACS 5-year, 2019–2023)

	Whiteside County	Williamson County
Population	56,016 → 55,192 (-1.5%)	67,102 → 66,902 (-0.3%)
Median household income	$54,232 → $64,536 (+19.0%)	$50,734 → $65,521 (+29.1%)
Median home value	$106,700 → $125,800 (+17.9%)	$114,900 → $145,600 (+26.7%)
Median gross rent	$695 → $808 (+16.3%)	$735 → $897 (+22.0%)

Whiteside County

Population

56,01655,192

Median household income

$54,232$64,536

Median home value

$106,700$125,800

Median gross rent

$695$808

Williamson County

Population

67,10266,902

Median household income

$50,734$65,521

Median home value

$114,900$145,600

Median gross rent

$735$897

Age & race/ethnicity

Age distribution (share)

	Whiteside County	Williamson County
Under 5	5.3%	5.4%
5 to 17	16.7%	16.1%
18 to 24	7.6%	6.7%
25 to 34	10.8%	12.7%
35 to 44	11.4%	13.5%
45 to 54	12.3%	12.4%
55 to 64	14.4%	13.6%
65 to 74	12.3%	11.5%
75 and over	9.1%	8.1%

Race & ethnicity (share)

	Whiteside County	Williamson County
White (non-Hispanic)	82.1%	88.2%
Black or African American	1.0%	3.5%
American Indian & Alaska Native	0.1%	0.3%
Asian	0.5%	1.5%
Native Hawaiian & Pacific Islander	0.0%	0.0%
Some other race	0.2%	0.1%
Two or more races	3.1%	3.6%
Hispanic or Latino	13.1%	2.8%

Educational attainment (age 25+)

Share of adults 25+

	Whiteside County	Williamson County
No high school diploma	9.0%	7.6%
High school graduate	37.8%	28.1%
Some college or associate's	33.1%	36.9%
Bachelor's degree	12.5%	16.5%
Graduate or professional degree	7.6%	11.0%

Commute to work

How workers get to work (share)

	Whiteside County	Williamson County
Drove alone	80.6%	81.5%
Carpooled	9.7%	7.6%
Public transit	0.3%	0.3%
Walked	3.5%	0.8%
Bicycle	0.7%	0.2%
Worked from home	4.9%	8.6%
Other means	0.4%	0.9%

Housing

Units in structure (share)

	Whiteside County	Williamson County
1-unit, detached	81.2%	73.9%
1-unit, attached	1.8%	1.3%
2 to 4 units	7.8%	12.2%
5 to 19 units	3.9%	3.3%
20 or more units	3.0%	1.9%
Mobile home & other	2.4%	7.4%

Poverty & households

	Whiteside County	Williamson County
Poverty rate	12.1%	14.3%
Average household size	2.33	2.25
Mean commute (minutes)	20	23
Median year structure built	1960	1981