With 46,708 people, Plainfield is a city in Illinois. Since 2000 the city has more than tripled, up 33,670 people. Households here earn about 73% more than in Illinois as a whole. 88% of homes are owner-occupied. 56% of adults hold a bachelor's degree, against 36% nationally. Few US cities rank higher on income.
At a glance
Wealthier
median household income $144,000, above the US median
US median: $82,259
Mid-age
median age 37.5
US median: 38.9
More educated
56% 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 Plainfield
What changed most since 1990
Population4,557 → 46,708(+925%)US over the same years: +35%
Adults with a bachelor's degree22.6% → 56.0%(+33.4 pts)US over the same years: +15.3 pts
Homes owned by their occupants70.9% → 88.0%(+17.1 pts)US over the same years: +0.9 pts
Plainfield's population equals 6.7% of Will County's. Its number of residents living in poverty equals 3.8% of the county's. Its number of people who work from home equals 11% of the county's.
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)33.4%(402)
US avg: 26.4%
Gulf War (1990s)40.1%(483)
US avg: 24.3%
Vietnam era20%(241)
US avg: 33.1%
Korean War2.6%(31)
US avg: 4.5%
World War II0.1%(1)
US avg: 1%
Share of the 1,204 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
Plainfield, decade by decade
Plainfield 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
4,557
$104,969
$289,688
22.6%
5.0
2000
13,038
$147,188
$360,141
33.9%
16.3
2010
39,581
$152,340
$469,262
46.0%
53.4
2020
44,762
$159,069
$390,883
55.3%
63.7
2024
46,708
$144,000
$431,400
56.0%
66.1
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.
