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Grand Detour, IL
Full City Profile · Illinois · Lee County County
3.2
/5.0
B
Good
282
Population
241/sq mi density
$74,141
Median Income
$41,984 per capita
$162,500
Home Value
$168,065 Zillow
48°F
Avg Temperature
275 sunny days/yr
92
Violent Crime/100K
1,522 property/100K
B
Overall
3.2 / 5.0
Good overall score based on economy, affordability, safety and education
B
Economy
3.3 / 5.0
$74,141 median income, 13.1% unemployment
A+
Affordability
5.0 / 5.0
$162,500 home value, /mo rent
F
Safety
1.0 / 5.0
92 violent crimes/100K
B
Education
3.3 / 5.0
29.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-27.5%
389 → 282
over 10 years
Annual Pop. Growth
-3.17%
Compound annual growth rate
Median Income Change
+33.3%
$55,625 → $74,141
nominal, not inflation-adjusted
Annual Income Growth
+2.92%
Compound annual growth rate
Population Over Time
Total population for Grand Detour 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
225
-57 from 2023 (282)
Projected Median Income 2030
$90,689
+$16,548 from 2023 ($74,141)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 389 | — | $55,625 | — |
| 2015 | 548 | +40.9% | $82,875 | +49% |
| 2017 | 507 | -7.5% | $100,966 | +21.8% |
| 2019 | 345 | -32% | $105,469 | +4.5% |
| 2021 | 379 | +9.9% | $67,218 | -36.3% |
| 2023 | 282 | -25.6% | $74,141 | +10.3% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.