Will County is a county of 701,462 people in Illinois. Few US counties rank higher on income. 83% of homes are owner-occupied. 199,196 more people live here than in 2000. Households here earn about 32% more than in Illinois as a whole. Households take in $109,984 a year at the median, 34% more than the country as a whole.
At a glance
Wealthier
median household income $109,984, above the US median
US median: $82,259
Mid-age
median age 39.1
US median: 38.9
Average education
37% hold a bachelor's degree
US average: 36%
Stable housing
home values roughly flat, inflation adjusted
US median home: $376,019
Unique to this place
What stands out about Will County
What changed most since 1990
Population357,313 → 701,462(+96%)US over the same years: +35%
White share82.6% → 58.6%(−24.0 pts)US over the same years: −17.8 pts
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)23.1%(5,910)
US avg: 26.4%
Gulf War (1990s)22.4%(5,725)
US avg: 24.3%
Vietnam era33.5%(8,552)
US avg: 33.1%
Korean War3.9%(985)
US avg: 4.5%
World War II1.9%(480)
US avg: 1%
Share of the 25,531 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
Over time
Will County, decade by decade
Will County population, inflation-adjusted income and home value, education, and diversity by year
Year
Population
Median household income
Median home value
Bachelor's degree+
Diversity score
1990
357,313
$98,871
$215,046
18.0%
38.0
2000
502,266
$113,376
$277,256
25.5%
47.8
2010
677,560
$109,196
$345,976
30.7%
63.6
2020
696,355
$110,053
$290,162
34.8%
73.3
2024
701,462
$109,984
$319,600
37.5%
74.8
Census years come from the decennial census and the latest year from the American Community Survey, so part of any change between those two rows can reflect the different surveys. Dollar figures are adjusted for inflation to 2024 dollars; a figure ending in "+" was at the Census Bureau's reporting cap that year. The diversity score runs from 0 to 100; see how it's calculated.