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South Wilmington, IL
Full City Profile · Illinois · Grundy County County
3.2
/5.0
B
Good
558
Population
1,139/sq mi density
$86,563
Median Income
$41,526 per capita
$164,900
Home Value
$200,047 Zillow
$1,188
Median Rent
25.6% income on rent
49°F
Avg Temperature
275 sunny days/yr
148
Violent Crime/100K
890 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.6 / 5.0
$86,563 median income, 2.7% unemployment
A+
Affordability
5.0 / 5.0
$164,900 home value, $1,188/mo rent
F
Safety
1.0 / 5.0
148 violent crimes/100K
C
Education
2.0 / 5.0
12.8% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+6.9%
669 → 715
over 10 years
Annual Pop. Growth
+0.67%
Compound annual growth rate
Median Income Change
+47.3%
$58,750 → $86,563
nominal, not inflation-adjusted
Annual Income Growth
+3.95%
Compound annual growth rate
Population Over Time
Total population for South Wilmington across each available Census ACS release.
Median Household Income Over Time
Median household income reported by U.S. Census ACS. Values are nominal (not adjusted for inflation).
Projected 2030
Simple projections extrapolating the 2013–2023 compound annual growth rate forward. These are mathematical extensions of recent trends, not forecasts — real outcomes depend on migration, policy and economic shifts.
Projected Population 2030
749
+34 from 2023 (715)
Projected Median Income 2030
$113,528
+$26,965 from 2023 ($86,563)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 669 | — | $58,750 | — |
| 2015 | 660 | -1.3% | $62,917 | +7.1% |
| 2017 | 652 | -1.2% | $65,313 | +3.8% |
| 2019 | 643 | -1.4% | $75,417 | +15.5% |
| 2021 | 715 | +11.2% | $76,667 | +1.7% |
| 2023 | 715 | +0% | $86,563 | +12.9% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.