All Countries
Marble Rock, IA
Full City Profile · Iowa · Butler County County
2.8
/5.0
C+
Fair
199
Population
240/sq mi density
$65,938
Median Income
$39,427 per capita
$59,300
Home Value
$156,034 Zillow
$592
Median Rent
23.0% income on rent
47°F
Avg Temperature
260 sunny days/yr
254
Violent Crime/100K
1,521 property/100K
C+
Overall
2.8 / 5.0
Fair overall score based on economy, affordability, safety and education
A
Economy
4.1 / 5.0
$65,938 median income, 3.4% unemployment
A+
Affordability
5.0 / 5.0
$59,300 home value, $592/mo rent
F
Safety
1.0 / 5.0
254 violent crimes/100K
F
Education
1.3 / 5.0
3.3% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
-13.5%
303 → 262
over 10 years
Annual Pop. Growth
-1.44%
Compound annual growth rate
Median Income Change
+81.9%
$36,250 → $65,938
nominal, not inflation-adjusted
Annual Income Growth
+6.17%
Compound annual growth rate
Population Over Time
Total population for Marble Rock 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
237
-25 from 2023 (262)
Projected Median Income 2030
$100,265
+$34,327 from 2023 ($65,938)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 303 | — | $36,250 | — |
| 2015 | 300 | -1% | $38,438 | +6% |
| 2017 | 295 | -1.7% | $46,875 | +21.9% |
| 2019 | 290 | -1.7% | $51,875 | +10.7% |
| 2021 | 268 | -7.6% | $56,667 | +9.2% |
| 2023 | 262 | -2.2% | $65,938 | +16.4% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.