City in Wayne County, Iowa · 2.4 sq mi · 269 people per sq mi
643 people live in Seymour. The typical household earns $46,071, and the median resident is 44.5 years old.
2026 projection
From 634 in 2020
Poverty rate 13.47%
Men 33.3 · Women 51.9
2010–2026
643
2026 projection
1.4% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
2010–2026
643
2026 projection
1.4% since 2020 (increase)
Source: U.S. Census Bureau decennial counts and annual estimates, including 2010–2020 intercensal estimates. 2026 is a projection. Values between recorded years are interpolated.
Use the left and right arrow keys to inspect population observations.
| 2026 | 643 | +2 | 0.31% |
|---|---|---|---|
| 2025 | 641 | -5 | 0.77% |
| 2024 | 646 | +6 | 0.94% |
| 2023 | 640 | +7 | 1.11% |
| 2022 | 633 | -5 | 0.78% |
| 2021 | 638 | +4 | 0.63% |
| 2020 | 634 | -7 | 1.09% |
| 2019 | 641 | -3 | 0.47% |
| 2018 | 644 | -18 | 2.72% |
| 2017 | 662 | -2 | 0.30% |
Showing 10 of 17 years.
The 2020 row compares the April 1 Census count with the July 1, 2019 estimate (about nine months). Its Growth and Annual change therefore do not represent a full year.
Seymour is growing slower than Wayne County, Iowa, and the U.S.
Change from July 1, 2020 to July 1, 2025 population estimates—not annualized growth or site projections.
Source: U.S. Census Bureau. U.S. totals are summed from the 50 states and D.C.; unavailable comparisons are omitted.
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S0101
Each square is about 1% of residents (roughly 6 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
52% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 52% | 64% | 43% |
| Never married | 22% | 23% | 21% |
| Divorced | 12% | 9% | 14% |
| Widowed | 13% | 3% | 21% |
| Separated | 1% | 2% | 1% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources