Wilmington, IL Profile: Facts, Map & Data


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Wilmington, Illinois - Basic Facts

The City of Wilmington had a population of 5,757 as of July 1, 2016.

The primary coordinate point for Wilmington is located at latitude 41.3171 and longitude -88.1436 in Will County. The formal boundaries for the City of Wilmington (see map below) encompass a land area of 9.36 sq. miles and a water area of 0.65 sq. miles. Will County is in the Central time zone (GMT -6). The elevation is 545 feet.

The City of Wilmington (GNIS ID: 2397328) has a C1 Census Class Code which indicates an active incorporated place that does not serve as a county subdivision equivalent. It also has a Functional Status Code of "A" which identifies an active government providing primary general-purpose functions.

The City of Wilmington is located within Township of Wilmington, a minor civil division (MCD) of Will County.

Beneath the boundary map are tables with Wilmington population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2016.

Alternate Unofficial Names for Wilmington: Winchester.

Neighborhood Data

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City of Wilmington, IL Boundary Map

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Boundary Maps: Township of Wilmington | Will County | Illinois Counties

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Wilmington, IL Data & Demographics (As of July 1, 2016)


Total Population 5,757
Population in Households 5,587
Population in Familes 4,394
Population in Group Qrtrs 170
Population Density1 615
Diversity Index2 17


Total Households 2,264
Average Household Size 2.47
Family Households 1,444
Average Family Size 3


Total Housing Units 2,455 (100%)
Owner Occupied HU 1,435 (58.5%)
Renter Occupied HU 829 (33.8%)
Vacant Housing Units 191 ( 7.8%)
Median Home Value $167,449
Average Home Value $192,770


Median Household Income $57,167
Average Household Income $68,653
Per Capita Income $28,293
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 0.09% 0.2%
Households 0.13% 0.19%
Families -0.31% 0.06%
Median Household Income   1.24%
Per Capita Income   1.48%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.

Wilmington, IL - Peer Comparisons by Rank and Percentile

The table below compares Wilmington to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2016 data. The location Ranked # 1 has the highest value. A location that ranks higher than 75% of its peers would be in the 75th percentile of the peer group.

Variable Description Rank Percentile
Total Population # 316 77th
Population Density1 # 1009 26th
Diversity Index2 # 533 61st
Median Household Income # 479 65th
Per Capita Income # 466 66th

Additional comparisons and rankings can be made with a VERY EASY TO USE Illinois Census Data Comparison Tool.

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