All Countries
Rock Falls, IL
Full City Profile · Illinois · Whiteside County County
2.8
/5.0
C+
Fair
8,683
Population
2,182/sq mi density
$48,733
Median Income
$31,287 per capita
$82,400
Home Value
$117,555 Zillow
$745
Median Rent
31.0% income on rent
49°F
Avg Temperature
275 sunny days/yr
80
Violent Crime/100K
903 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
B
Economy
3.0 / 5.0
$48,733 median income, 3.4% unemployment
A+
Affordability
5.0 / 5.0
$82,400 home value, $745/mo rent
F
Safety
1.0 / 5.0
80 violent crimes/100K
C
Education
2.2 / 5.0
15.0% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-6.4%
9,199 → 8,613
over 10 years
Annual Pop. Growth
-0.66%
Compound annual growth rate
Median Income Change
+39%
$35,065 → $48,733
nominal, not inflation-adjusted
Annual Income Growth
+3.35%
Compound annual growth rate
Population Over Time
Total population for Rock Falls 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
8,223
-390 from 2023 (8,613)
Projected Median Income 2030
$61,376
+$12,643 from 2023 ($48,733)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 9,199 | — | $35,065 | — |
| 2015 | 9,061 | -1.5% | $35,361 | +0.8% |
| 2017 | 8,895 | -1.8% | $44,848 | +26.8% |
| 2019 | 8,746 | -1.7% | $49,191 | +9.7% |
| 2021 | 8,724 | -0.3% | $45,780 | -6.9% |
| 2023 | 8,613 | -1.3% | $48,733 | +6.5% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.