City in Greene County, Iowa · 6 sq mi · 688 people per sq mi
About 4,100 people live in Jefferson. The typical household earns $58,895, and the median resident is 53.6 years old.
2026 projection
From 4,180 in 2020
Poverty rate 7.34%
Men 44.3 · Women 57.7
1870–2026
4,141
2026 projection
0.9% 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.
1870–2026
4,141
2026 projection
0.9% 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 | 4,141 | -9 | 0.22% |
|---|---|---|---|
| 2025 | 4,150 | +4 | 0.10% |
| 2024 | 4,146 | +37 | 0.90% |
| 2023 | 4,109 | -45 | 1.08% |
| 2022 | 4,154 | -13 | 0.31% |
| 2021 | 4,167 | -13 | 0.31% |
| 2020 | 4,180 | +81 | 1.98% |
| 2019 | 4,099 | -47 | 1.13% |
| 2018 | 4,146 | +2 | 0.05% |
| 2017 | 4,144 | -23 | 0.55% |
Showing 10 of 31 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 42 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 14 residents
50% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 50% | 58% | 44% |
| Never married | 22% | 30% | 15% |
| Divorced | 16% | 8% | 22% |
| Widowed | 12% | 3% | 19% |
| Separated | <1% | <1% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau