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Belknap, IL
Full City Profile · Illinois · Johnson County County
2.1
/5.0
C
Fair
78
Population
74/sq mi density
57°F
Avg Temperature
299 sunny days/yr
138
Violent Crime/100K
551 property/100K
C
Overall
2.1 / 5.0
Fair overall score based on economy, affordability, safety and education
F
Safety
1.0 / 5.0
138 violent crimes/100K
B
Education
3.2 / 5.0
27.5% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-18.9%
106 → 86
over 10 years
Annual Pop. Growth
-2.07%
Compound annual growth rate
Population Over Time
Total population for Belknap 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
74
-12 from 2023 (86)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 106 | — | $27,813 | — |
| 2015 | 106 | +0% | — | — |
| 2017 | 106 | +0% | $24,375 | — |
| 2019 | 108 | +1.9% | $30,500 | +25.1% |
| 2021 | 97 | -10.2% | — | — |
| 2023 | 86 | -11.3% | — | — |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.