City in Keokuk County, Iowa · 0.4 sq mi · 294 people per sq mi
110 people live in Martinsburg. The typical household earns $55,000, and the median resident is 50.5 years old.
2026 projection
From 110 in 2020
Poverty rate 29.7%
Men 55.3 · Women 46.5
2010–2026
110
2026 projection
0% since 2020 (no change)
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
110
2026 projection
0% since 2020 (no change)
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 | 110 | -1 | 0.90% |
|---|---|---|---|
| 2025 | 111 | 0 | 0.00% |
| 2024 | 111 | -1 | 0.89% |
| 2023 | 112 | 0 | 0.00% |
| 2022 | 112 | 0 | 0.00% |
| 2021 | 112 | +2 | 1.82% |
| 2020 | 110 | -1 | 0.90% |
| 2019 | 111 | +1 | 0.91% |
| 2018 | 110 | +1 | 0.92% |
| 2017 | 109 | 0 | 0.00% |
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.
Martinsburg has a population change higher than Keokuk County, and lower than 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 1 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 3 residents
47% of residents age 15 and older are married.
| Status | Overall | Male | Female |
|---|---|---|---|
| Married | 47% | 63% | 37% |
| Never married | 22% | 25% | 20% |
| Divorced | 19% | 3% | 29% |
| Widowed | 12% | 9% | 14% |
| Separated | 0% | 0% | 0% |
U.S. Census Bureau, 2024 ACS 5-year estimates · Table S1201
14 sources