City in Bremer County, Iowa · 1.4 sq mi · 760 people per sq mi
About 1,100 people live in Janesville. The typical household earns $103,542, and the median resident is 47 years old.
2026 projection
From 1,039 in 2020
Poverty rate 5.45%
Men 44.8 · Women 50
2010–2026
1,056
2026 projection
1.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
1,056
2026 projection
1.6% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 1,056 | +4 | 0.38% |
|---|---|---|---|
| 2025 | 1,052 | -4 | 0.38% |
| 2024 | 1,056 | +2 | 0.19% |
| 2023 | 1,054 | +3 | 0.29% |
| 2022 | 1,051 | +7 | 0.67% |
| 2021 | 1,044 | +5 | 0.48% |
| 2020 | 1,039 | +51 | 5.16% |
| 2019 | 988 | +5 | 0.51% |
| 2018 | 983 | +6 | 0.61% |
| 2017 | 977 | +3 | 0.31% |
Showing 10 of 17 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 9 people).
Hispanic or Latino residents can be of any race. All other groups exclude Hispanic residents.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table B03002
Half of households earn more, half earn less
Typical yearly pay for a worker 25 or older.
About 1 in 18 residents
64% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 64% | 62% | 67% |
| Never married | 26% | 30% | 22% |
| Divorced | 6% | 6% | 6% |
| Widowed | 3% | 2% | 5% |
| Separated | <1% | 0% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau