All Countries
Janesville, IA
Full City Profile · Iowa · Bremer County County
3.4
/5.0
B
Good
1,012
Population
728/sq mi density
$84,231
Median Income
$37,851 per capita
$214,700
Home Value
$303,558 Zillow
$625
Median Rent
23.3% income on rent
49°F
Avg Temperature
260 sunny days/yr
544
Violent Crime/100K
1,492 property/100K
B
Overall
3.4 / 5.0
Good overall score based on economy, affordability, safety and education
A+
Economy
4.7 / 5.0
$84,231 median income, 2.1% unemployment
A+
Affordability
5.0 / 5.0
$214,700 home value, $625/mo rent
F
Safety
1.0 / 5.0
544 violent crimes/100K (43% above avg)
B
Education
3.1 / 5.0
25.8% bachelor's degree or higher
Change Over Time (2013–2023)
Population Change
+10.8%
945 → 1,047
over 10 years
Annual Pop. Growth
+1.03%
Compound annual growth rate
Median Income Change
+72.4%
$48,864 → $84,231
nominal, not inflation-adjusted
Annual Income Growth
+5.6%
Compound annual growth rate
Population Over Time
Total population for Janesville 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
1,125
+78 from 2023 (1,047)
Projected Median Income 2030
$123,344
+$39,113 from 2023 ($84,231)
Year-by-Year Detail
| Year | Population | YoY % | Median Income | YoY % |
|---|---|---|---|---|
| 2013 | 945 | — | $48,864 | — |
| 2015 | 970 | +2.6% | $52,625 | +7.7% |
| 2017 | 977 | +0.7% | $62,708 | +19.2% |
| 2019 | 988 | +1.1% | $63,750 | +1.7% |
| 2021 | 1,048 | +6.1% | $88,750 | +39.2% |
| 2023 | 1,047 | -0.1% | $84,231 | -5.1% |
Source: U.S. Census ACS 5-Year Estimates (Data Commons). Home value and rent are not yet available historically.