CDP in Cumberland County, Illinois · 0.1 sq mi · 277 people per sq mi
About 17 people live in Janesville. The median resident is 50.1 years old.
2026 projection
From 38 in 2020
Poverty rate 0%
Men 45.9 · Women 0
2020–2026
17
2026 projection
55.3% since 2020 (decrease)
Source: U.S. Census Bureau decennial counts and annual estimates. 2026 is a projection. Values between recorded years are interpolated.
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2020–2026
17
2026 projection
55.3% since 2020 (decrease)
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 | 17 | +1 | 6.25% |
|---|---|---|---|
| 2025 | 16 | +2 | 6.90% |
| 2023 | 14 | -30 | 68.18% |
| 2022 | 44 | -14 | 24.14% |
| 2021 | 58 | +20 | 52.63% |
| 2020 | 38 | — | — |
Showing 6 of 6 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 0.39 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
85% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 85% | 74% | 100% |
| Never married | 15% | 26% | 0% |
| Divorced | 0% | 0% | 0% |
| Widowed | 0% | 0% | 0% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
7 sources, all from the U.S. Census Bureau