Martinsburg Flag

Martinsburg

County:
Keokuk County
County Seat:
No
Area (mi²):
0.374
State:
Iowa

Martinsburg is a city located in Keokuk County, Iowa. Martinsburg has a 2026 population of 108. Martinsburg is currently declining at a rate of 0% annually and its population has decreased by -1.82% since the most recent census, which recorded a population of 110 in 2020.

The median household income in Martinsburg is $55,000 with a poverty rate of 29.7%. The median age in Martinsburg is 50.5 years: 55.3 years for males, and 46.5 years for females. For every 100 females there are 57.8 males.

108
Total Population
289
Density (mi²)

Martinsburg Population

Martinsburg Population

Data after 2023 is projected based on recent change

Year ↓
Population
Growth
Annual Change
202610800%
2025108-1-0.92%
202410900%
202310900%
202210900%
2021109-1-0.91%
202011000%
201910800%
201810810.93%
201710700%
201610700%
2015107-1-0.93%
2014108-1-0.92%
2013109-2-1.8%
201211100%
2011111-1-0.89%
201011200%

Median Age

Overall: 50.5 years
Female: 46.5 years
Male: 55.3 years

Martinsburg Adults

There are 78 adults, (25 of whom are seniors) in Martinsburg.

Sex Ratio

Female: 64 (63.4%)
Male: 37 (36.6%)

Demographics

The racial composition of Martinsburg includes 90.1% White, and smaller percentages for and multiracial populations.

Population by Race

Race
Population ↓
Percentage (of total)
White9190.1%
Two or more races109.9%
Race
Population ↓
Percentage (of total)
Two or more races109.9%
White21.98%
Race
Population ↓
Percentage (of total)
White8988.12%

Martinsburg Marital Status

Economics and Income Statistics

Martinsburg 's average per capita income is $30,500. Household income levels show a median of $55,000. The poverty rate stands at 29.7%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.
Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.
Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.
Name
Median ↓
Mean
Married Families$68,750-
Families$58,958$52,284
Households$55,000$55,733
Non Families$31,563$34,267

$30,500

Average Income

$55,000

Median Household Income

29.7%

Poverty Rate

Nearby Cities

Sources

  1. US Census State Population Estimates - Most recent state estimates from the Census Bureau's Population Estimates Program
  2. US Census County Population Estimates - Most recent county estimates from the Census Bureau's Population Estimates Program
  3. American Community Survey (2009 - 2013)
  4. Census QuickFacts
  5. Historical Populations of States and Counties (1790 - 1990)