City · Illinois
Wilmington, Will County, Illinois
Wilmington, Will County, city, in Will County, Illinois. Wilmington, Will County had 5,614 residents on July 1, 2025 by the Census Bureau's estimate, down 0.7% since 2020; the 2020 Census counted 5,664 and the ACS 2020-2024 5-year estimates put it at 5,494 (±392). GEOID 1782101.
Residents, July 2025 estimate
5,614
Census Bureau estimate (no margin published)
2020 Census count: 5,664 · ACS 2020-2024: 5,494 ±392
Median household income
$66,154
±$13,029 (90% margin)
Illinois: $83,390
Median home value
$223,800
±$18,009 (90% margin)
Illinois: $263,300
Median gross rent
$888
±$309 (90% margin)
Illinois: $1,274
Where is Wilmington, Will County and what county is it in?
Wilmington, Will County is a city in Will County, Illinois. It covers 14.0 square miles of land, 403 residents per square mile in 2020.
Wilmington, Will County is in the Chicago-Naperville-Elgin, IL-IN metropolitan statistical area, which takes in 13 counties (Census Bureau delineation, July 2023).
Wilmington, Will County lies mostly within Wilmington Township and reaches into Florence Township (Will County) and Wesley Township, towns or townships with their own local government (2020 census blocks).
Source: 2024 Gazetteer and 2020 place-by-county files, U.S. Census Bureau · Census reference files
How many people live in Wilmington, Will County, and is it growing?
The Census Bureau estimates that 5,614 people lived in Wilmington, Will County on July 1, 2025, down 0.7% since 2020, in line with Illinois (−0.8%). The 2020 Census counted 5,664 residents. The 2020-2024 American Community Survey, a five-year sample, puts the population at 5,494 (±392).
| Measure | Wilmington, Will County | Will County | Change since 2015-2019 |
|---|---|---|---|
| Total population | 5,494±392 | 701,462 | −536 |
| Households | 2,296±220 | 244,273 | no clear change |
| Average household size | 2.29±0.19 | 2.84 | no clear change |
| Housing units | 2,403±222 | 254,278 | no clear change |
Wilmington, Will County's population since 2000
From 5,134 in 2000 to 5,614 in 2025: up 9.3%. The 2000, 2010 and 2020 figures are census counts, each for Wilmington, Will County as it was drawn that year: a place that annexed land, or a community that has since incorporated, covered a different area then. The 2005 figure is the Census Bureau's intercensal estimate, revised to fit the 2000 and 2010 counts and drawn on 2010 boundaries; 2015 and 2025 are July 1 estimates made from the census before them.
Source: The 2000, 2010 and 2020 Census counts and the Census Bureau's population estimates (intercensal 2000-2010, Vintage 2020, Vintage 2025) · Census population estimates
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); Census PEP Vintage 2025 (SUB-EST2025, CO-EST2025); 2020 Census P.L. 94-171 · Check it at data.census.gov
Who lives in Wilmington, Will County?
The median resident of Wilmington, Will County is 40.3 years old; 20.4% are under 18 and 21.0% are 65 or older. The largest group is non-Hispanic white residents at 84.0%, then Hispanic or Latino residents (of any race) at 9.4%. 4.9% of residents were born outside the United States.
| Measure | Wilmington, Will County | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median age | 40.3±4.9 | 39.1 | no clear change |
| Under 18 years | 20.4%±3.5 pts | 23.6% | – |
| 65 years and over | 21.0%±3.6 pts | 14.6% | – |
| Male | 49.2%±3.0 pts | 49.9% | – |
| Hispanic or Latino (any race) | 9.4%±4.2 pts | 19.8% | no clear change |
| White alone, not Hispanic | 84.0%±5.4 pts | 58.6% | no clear change |
| Black or African American alone, not Hispanic | 2.7%±3.7 pts | 11.6% | – |
| Asian alone, not Hispanic | 0.8%±0.9 pts | 6.3% | – |
| American Indian and Alaska Native alone, not Hispanic | 0.0%±0.7 pts | 0.1% | – |
| Native Hawaiian and Other Pacific Islander alone, not Hispanic | 0.0%±0.7 pts | 0.0% | – |
| Two or more races, not Hispanic | 2.7%±1.8 pts | 3.4% | – |
| Some other race alone, not Hispanic | 0.4%±0.6 pts | 0.4% | – |
| Born outside the United States | 4.9%±2.4 pts | 13.5% | +3.3 pts |
| Speak a language other than English at home (age 5+) | 8.9%±4.1 pts | 22.4% | – |
| Civilian veterans (age 18+) | 5.2%±1.9 pts | 4.8% | – |
| With a disability | 13.9%±3.5 pts | 10.0% | – |
| No health insurance coverage | 4.4%±2.0 pts | 5.2% | no clear change |
| High school graduate or higher (age 25+) | 92.7%±2.6 pts | 91.8% | – |
| Bachelor's degree or higher (age 25+) | 19.8%±4.4 pts | 37.5% | no clear change |
| Graduate or professional degree (age 25+) | 6.7%±2.7 pts | 14.9% | – |
| Lived in the same house a year earlier | 94.1%±2.3 pts | 92.1% | – |
| Moved from another state in the past year | 0.1%±0.2 pts | 0.8% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profiles DP02, DP05) · Check it at data.census.gov
What do households in Wilmington, Will County earn?
Half of Wilmington, Will County's 2,296 households earn less than $66,154 a year (±$13,029), against $109,984 in Will County and $83,390 in Illinois. In 2015-2019 it was $69,247 in 2024 dollars; the margins of error cannot tell the two periods apart. 11.5% of residents live below the poverty line.
| Measure | Wilmington, Will County | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median household income | $66,154±$13,029 | $109,984 | no clear change |
| Mean household income | $79,282±$7,005 | $134,181 | – |
| Per capita income | $34,682±$2,474 | $47,516 | no clear change |
| People below the poverty line | 11.5%±4.2 pts | 7.3% | no clear change |
| Children under 18 below the poverty line | 6.8%±5.3 pts | 9.9% | – |
| Households receiving SNAP | 19.0%±6.8 pts | 10.1% | – |
| Households with a computer | 88.7%±4.8 pts | 97.0% | – |
| Households with a broadband subscription | 84.5%±7.3 pts | 94.1% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What does housing cost in Wilmington, Will County?
Owners occupy 64.4% of Wilmington, Will County's occupied homes and renters 35.6%. The median owner-occupied home is valued at $223,800 by its owner (±$18,009). The median renter pays $888 a month including utilities, and 42.9% of renters pay 35% or more of their income on rent.
| Measure | Wilmington, Will County | Will County | Change since 2015-2019 |
|---|---|---|---|
| Median home value (owner-occupied) | $223,800±$18,009 | $319,600 | no clear change |
| Median gross rent | $888±$309 | $1,462 | no clear change |
| Renters paying 35% or more of income on rent | 42.9%±12.8 pts | 43.4% | no clear change |
| Median monthly owner costs, with a mortgage | $1,766±$148 | $2,255 | – |
| Owner-occupied homes | 64.4%±6.2 pts | 82.8% | no clear change |
| Renter-occupied homes | 35.6%±6.2 pts | 17.2% | – |
| Housing units | 2,403±222 | 254,278 | no clear change |
| Homeowner vacancy rate | 0.0%±2.5 pts | 0.5% | – |
| Rental vacancy rate | 4.3%±7.1 pts | 3.7% | – |
| Single-family detached homes | 67.0%±6.1 pts | 74.4% | – |
| Mobile homes | 0.5%±0.8 pts | 1.3% | – |
| Built 2020 or later | 0.0%±1.5 pts | 1.2% | – |
| Built 2010 to 2019 | 2.3%±1.8 pts | 6.3% | – |
| Built 1939 or earlier | 9.9%±3.5 pts | 6.9% | – |
| Households with no vehicle | 7.0%±4.1 pts | 3.9% | – |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP04) · Check it at data.census.gov
How many new homes is Wilmington, Will County building?
Builders took permits for 13 new housing units in Wilmington, Will County in 2025 (13 in single-family houses), 2.3 per 1,000 residents against 1.5 across Illinois.
Counts of units in permits a local office issued; not every permitted unit is built. A year marked with months was reported for part of the year.
Source: Building Permits Survey, annual place files 2019-2025, U.S. Census Bureau · Census Building Permits Survey
How do people in Wilmington, Will County work and get to work?
86.6% of Wilmington, Will County's workers drive alone and 4.7% work from home. The average trip to work takes 23.6 minutes. The unemployment rate in 2020-2024 averaged 4.7%.
| Measure | Wilmington, Will County | Will County | Change since 2015-2019 |
|---|---|---|---|
| In the labor force (age 16+) | 61.3%±4.5 pts | 68.3% | – |
| Unemployment rate | 4.7%±2.6 pts | 4.9% | no clear change |
| Drove alone to work | 86.6%±4.3 pts | 72.9% | – |
| Carpooled | 3.6%±1.8 pts | 8.0% | – |
| Public transportation | 2.1%±2.4 pts | 2.0% | – |
| Walked | 1.6%±1.7 pts | 0.7% | – |
| Worked from home | 4.7%±2.4 pts | 14.7% | no clear change |
| Mean travel time to work | 23.6 min±2.9 | 31.4 min | no clear change |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) (Data Profile DP03) · Check it at data.census.gov
What census tracts are in Wilmington, Will County?
1 census tract lies mostly in Wilmington, Will County, and 5 more reach into it (2020 census blocks).
| Tract | Residents, 2020-2024 | Median household income |
|---|---|---|
| Tract 8834.01Will County | 3,975 | $59,506 |
| Tract 8834.02Will County | 1,940 | $88,500 |
| Tract 8833.04Will County | 1,943 | $116,691 |
| Tract 8840.06Will County | 1,819 | $78,031 |
| Tract 8840.05Will County | 1,503 | $121,771 |
| Tract 9800Will County | 0 | not published |
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026); 2020 block assignment files (tract share = share of the tract's census blocks in Wilmington, Will County) · Census block assignment files
How does Wilmington, Will County compare with other places in Illinois?
By the Census Bureau's July 2025 estimates, Wilmington, Will County is the 4,586th-most populous of the 19,476 U.S. incorporated places that have one and the 313th-most populous of 1,294 in Illinois.
Wilmington, Will County ranks 943rd of 1,380 places in Illinois with 1,000 or more residents and a reliable estimate, by median household income.
| Measure | Rank | Of |
|---|---|---|
| Population, July 2025 estimate | 313th | 1,294 |
| Growth 2020-2025 (PEP) | 392nd | 1,347 |
| Residents per square mile | 805th | 1,383 |
| Median household income | 943rd | 1,380 |
| Per capita income | 909th | 1,383 |
| Median home value | 484th | 1,379 |
| Median gross rent | 767th | 1,280 |
| Poverty rate | 477th | 1,119 |
| Bachelor's degree or higher | 893rd | 1,369 |
| Median age | 770th | 1,383 |
| Owner-occupied share | 1,198th | 1,382 |
| Work from home | 966th | 1,015 |
| Travel time to work | 867th | 1,382 |
Wilmington, Will County's figures with every place in Illinois (CSV)
Every place in Illinois, sortable · Compare Wilmington, Will County with other places
Source: PlainCities ranks computed from the American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026) and PEP Vintage 2025 · How ranks are computed
How reliable are the figures for Wilmington, Will County?
15 of the 57 figures for Wilmington, Will County on this page carry a coefficient of variation over 40% and are marked with a ring: they come from a small sample, so read them as rough.
The American Community Survey samples about one household in eight over five years, so every figure is an estimate with a 90% margin of error (shown under each value). A ring marks an estimate whose coefficient of variation is over 40%. A change is called only when the gap between the two periods is larger than their combined 90% margin (the square root of the sum of the two squared margins), the Census Bureau's test. How to read a margin of error.
Source: American Community Survey 2020-2024 5-year estimates, U.S. Census Bureau (released January 2026): margins of error as published · ACS technical documentation
How these figures are made: methodology and release checks · reading a margin of error · every state · corrections
Not on this page: crime, weather and schools for Wilmington, Will County are other agencies' records. Crime: the FBI's Crime Data Explorer · climate: NOAA's U.S. Climate Normals · schools: the National Center for Education Statistics' public schools in Wilmington.