City in Clay County, Iowa · 10.9 sq mi · 1,028 people per sq mi
About 11,000 people live in Spencer. The typical household earns $59,667, and the median resident is 41.4 years old.
2026 projection
From 11,302 in 2020
Poverty rate 14.02%
Men 39 · Women 43.1
1880–2026
11,253
2026 projection
0.4% 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.
1880–2026
11,253
2026 projection
0.4% 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 | 11,253 | +35 | 0.31% |
|---|---|---|---|
| 2025 | 11,218 | -227 | 1.98% |
| 2024 | 11,445 | -17 | 0.15% |
| 2023 | 11,462 | +22 | 0.19% |
| 2022 | 11,440 | +40 | 0.35% |
| 2021 | 11,400 | +98 | 0.87% |
| 2020 | 11,302 | +286 | 2.60% |
| 2019 | 11,016 | -42 | 0.38% |
| 2018 | 11,058 | +17 | 0.15% |
| 2017 | 11,041 | -57 | 0.51% |
Showing 10 of 30 years.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 114 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 7 residents
46% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 46% | 49% | 44% |
| Never married | 33% | 36% | 30% |
| Divorced | 12% | 11% | 14% |
| Widowed | 8% | 2% | 13% |
| Separated | <1% | 1% | <1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
10 sources, all from the U.S. Census Bureau