South Wilmington, IL Profile: Facts, Map & Data


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South Wilmington, Illinois - Basic Facts

The Village of South Wilmington had a population of 687 as of July 1, 2017.

The primary coordinate point for South Wilmington is located at latitude 41.1744 and longitude -88.2813 in Grundy County. The formal boundaries for the Village of South Wilmington (see map below) encompass a land area of 0.56 sq. miles and a water area of 0 sq. miles. Grundy County is in the Central time zone (GMT -6). The elevation is 587 feet.

The Village of South Wilmington (GNIS ID: 2399862) 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 Village of South Wilmington is located within Township of Greenfield, a minor civil division (MCD) of Grundy County.

Beneath the boundary map are tables with South Wilmington population, income and housing data, five-year growth projections and peer comparisons for key demographic data. The estimates are for July 1, 2017.

Neighborhood Data

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Village of South Wilmington, IL Boundary Map

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Boundary Maps: Township of Greenfield | Grundy County | Illinois Counties

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South Wilmington, IL Data & Demographics (As of July 1, 2017)


Total Population 687
Daytime Population: Workers 168
Daytime Population: Residents 357
Total Daytime Population (TDP) 525
Ratio TDP/Total Population1 0.76
Population in Households 687
Population in Familes 563
Population in Group Qrtrs 0
Population Density2 1,225
Diversity Index3 10


Median Household Income $58,988
Average Household Income $71,616
Per Capita Income $30,033


Total Housing Units 319 (100%)
Owner Occupied HU 241 (75.5%)
Renter Occupied HU 55 (17.2%)
Vacant Housing Units 24 ( 7.5%)
Median Home Value $129,012
Average Home Value $173,347


Total Households 295
Average Household Size 2.33
Family Households 202
Average Family Size 3
  1. If the ratio of the TDP to Total Population is greater than 1, the location gains population during the day when commuting workers are present. If the ratio is less than 1, the location is more of a bedroom community where people commute to another place for work.
  2. Population Density = Total Population per square mile.
  3. The Diversity Index is a scale of 0 to 100 that represents the likelihood 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.


2010-2017 2017-2022
Population 0.12% 0.2%
Households 0.24% 0.34%
Families 0.63% 0.2%
Median Household Income   3.04%
Per Capita Income   2.89%

South Wilmington, IL - Peer Comparisons by Rank and Percentile

The table below compares South Wilmington to the other 1,368 incorporated cities, towns and CDPs in Illinois by rank and percentile using July 1, 2017 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 # 819 40th
Population Density # 625 54th
Diversity Index # 877 36th
Median Household Income # 464 66th
Per Capita Income # 434 68th

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

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