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Dahlgren, IL
Full City Profile · Illinois · Hamilton County County
2.5
/5.0
C+
Fair
631
Population
619/sq mi density
$47,500
Median Income
$18,542 per capita
$68,800
Home Value
$140,131 Zillow
$814
Median Rent
29.1% income on rent
56°F
Avg Temperature
293 sunny days/yr
1,261
Violent Crime/100K
6,224 property/100K
C+
Overall
2.5 / 5.0
Fair overall score based on economy, affordability, safety and education
C+
Economy
2.6 / 5.0
$47,500 median income, 7.2% unemployment
A+
Affordability
5.0 / 5.0
$68,800 home value, $814/mo rent
F
Safety
1.0 / 5.0
1,261 violent crimes/100K (232% above avg)
D
Education
1.6 / 5.0
7.1% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-4.4%
520 → 497
over 10 years
Annual Pop. Growth
-0.45%
Compound annual growth rate
Median Income Change
+49%
$31,875 → $47,500
nominal, not inflation-adjusted
Annual Income Growth
+4.07%
Compound annual growth rate
Population Over Time
Total population for Dahlgren 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
482
-15 from 2023 (497)
Projected Median Income 2030
$62,802
+$15,302 from 2023 ($47,500)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 520 | — | $31,875 | — |
| 2015 | 513 | -1.3% | $31,346 | -1.7% |
| 2017 | 510 | -0.6% | $36,875 | +17.6% |
| 2019 | 505 | -1% | $43,958 | +19.2% |
| 2021 | 498 | -1.4% | $41,731 | -5.1% |
| 2023 | 497 | -0.2% | $47,500 | +13.8% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.