| City: | Martinsburg, Iowa |
| County: | Keokuk County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:20:30 AM |
| Population: | 97 [See All] |
| Area Code: | 641 |
| Classification: | PO Box |
| Coordinates: | 41.1805, -92.2405 |
| Land Area: | 0.262 sq mi |
| Quick Link: |
Martinsburg is a very small rural community in Keokuk County, Iowa, with just 97 residents living in 35 households. This ZIP was classified as PO Box only, though mail actually arrives via two rural carrier routes serving streets like Main Street, Park Street, and Church Street. The compact 0.14 square mile footprint contains homes that date back generations (all current housing was built before 1939).
The post office maintains 19 PO Boxes for the 35 local households, giving it a 54% adoption rate. This mixed service pattern is typical for small Iowa farm communities, where some residents receive rural delivery while others prefer the convenience of a PO Box. With no city carrier delivery available, the classification stuck even after rural routes were established.
At a median age of 42.5, Martinsburg skews toward working-age and middle-aged residents. There are very few children (just one person under 18) and a handful of seniors. With 26% of workers doing their jobs from home and 28% employed in transportation or warehousing, this isn't a traditional commuter town. The median household income of $40,000 and per capita income of $18,637 put it below Iowa averages, and there are no registered business establishments within the ZIP.
Streets follow a classic small town pattern with Main Street as the core and numbered cross streets.
ZIP Code 52568 has 97 residents and 35 households (average 2.77 persons per household). The median age is 42.5 years, older than the state (38.6) and older than the nation (38.8). The gender split is 38.1% male and 61.9% female, which is much lower than the state male share (49.7%), making this a female-majority area. Largest groups are White (96.9%, much higher than the state average of 84.5% and well above the national average of 61.6%) and Hispanic or Latino (4.1%); Hispanic or Latino residents make up 4.1%, which is much lower than the national average (18.7%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 97Source: Census DHC |
| 2024 ACS Population Estimate: | 80Source: Census ACS |
| 2026 ZC Population Estimate: | 2Source: ZIP-Codes.com |
| Population Density: | 370.2 people per sq mile |
| Average Income: | $44,375Source: Census ACS |
| Households: | 35Source: Census DHC |
| Average House Value: | $66,300Source: Census ACS |
| Persons Per Household: | 2.77Source: Census DHC |
| Average Family Size: | 3.12Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 0 | 83 | 84 | 73 | 80 |
| Decennial Census | 0 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 97 | -- | -- | -- | -- |
Median Age: 42.5
Male Median Age: 51.5
Female Median Age: 36.7
| Group | < 5 | 5-9 | 10-14 | 15-19 | 20-24 | 25-29 | 30-34 | 35-39 | 40-44 | 45-49 | 50-54 | 55-59 | 60-64 | 65-69 | 70-74 | 75-79 | 80-84 | 85+ |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Male | 1 | 1 | 4 | 0 | 3 | 1 | 2 | 3 | 1 | 2 | 7 | 4 | 1 | 1 | 0 | 3 | 2 | 1 |
| Female | 4 | 2 | 11 | 6 | 0 | 4 | 1 | 4 | 2 | 6 | 7 | 2 | 2 | 4 | 4 | 0 | 1 | 0 |
| Total | 5 | 3 | 15 | 6 | 3 | 5 | 3 | 7 | 3 | 8 | 14 | 6 | 3 | 5 | 4 | 3 | 3 | 1 |
| White: | 94 | 95.92% |
| Black: | 0 | 0% |
| Hispanic:* | 4 | 4.08% |
| Asian: | 0 | 0% |
| American Indian: | 0 | 0% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 98 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 37 | 38.14% | 51.5 years |
| Females: | 60 | 61.86% | 36.7 years |
| Total: | 97 | 100% | 42.5 years |
| Native, born in the United States: | 70 | 87.50% |
| Native, born in PR, Island Areas, or abroad: | 0 | 0.00% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 10 | 12.50% |
| Total Population: | 80 | 100% |
| Total Native Population: | 70 | 87.50% |
| Total Foreign-born Population: | 10 | 12.50% |
In 2024, the Median household income is $44,375, which is well under the national median ($80,734), and above its 2019 pre-pandemic level by $44,375. Family households earn a median of $57,500 versus $31,563 for nonfamily households (a difference of $25,937). By gender, male median income is $60,625 and female is $31,875, which is much lower than the national female median ($55,274), with a current gap of $28,750 that has widened from 2011 to 2024. The labor-force participation rate is 51.6%, which is markedly below the national rate (63.5%). The unemployment rate is 0.0%, which is considerably lower than the national rate (5.2%). The largest occupation group is Service (30.3%).
Explore More:Income Over TimeHousehold IncomeEmployment StatusBy Occupation
| Income Type | 2011 | 2012 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Household Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $27,500 | $35,833 | $40,000 | $44,375 |
| Median Family Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $37,813 | $40,250 | $42,708 | $57,500 |
| Median NonFamily Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $24,306 | $28,750 | $30,625 | $31,563 |
| Median Male Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $38,750 | $40,250 | $43,542 | $60,625 |
| Median Female Income | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $30,625 | $33,333 | $36,250 | $31,875 |
| Employed: | 33 | 51.56% |
| Unemployed: | 0 | 0.00% |
| Not In Labor Force: | 31 | 48.44% |
| Total: | 64 | 100% |
| Management, business, science, and arts: | 7 | 21.21% |
| Service: | 10 | 30.30% |
| Sales and Office: | 3 | 9.09% |
| Natural resources, construction, and maintenance: | 5 | 15.15% |
| Production, transportation, and material moving: | 8 | 24.24% |
| Total Civilian Employed Population: | 33 | 100% |
In 2024, the median home value is $66,300, which is considerably lower than the national median ($332,700), and above its 2019 pre-pandemic level by $66,300. The median gross rent is $0, which is well under the national median ($1,413), and above its 2019 pre-pandemic level by $0. Insufficient data for owner/renter mix. Insufficient data for vacancy rate.
Explore More:Compare Home ValueHome Value Over TimeRent & Over TimeHousing Occupancy
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Home Value | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $63,000 | $76,300 | $0 | $66,300 |
| Less than $500: | 0 | 0.00% |
| $500 to $999: | 4 | 66.67% |
| $1,000 to $1,499: | 1 | 16.67% |
| $1,500 to $1,999: | 1 | 16.67% |
| $2,000 to $2,499: | 0 | 0.00% |
| $2,500 to $2,999: | 0 | 0.00% |
| $3,000 or more: | 0 | 0.00% |
| No Rent: | 0 | 0.00% |
| Total: | 6 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Owner Occupied (with mortgage): | 5 | 15.15% |
| Owner Occupied (free and clear, no mortgage): | 22 | 66.67% |
| Renter Occupied: | 6 | 18.18% |
| Total Occupied Housing Units: | 33 | 100% |
| Occupied Housing Units: | 33 | 97.06% |
| Vacant Housing Units (not graphed): | 1 | 2.94% |
| Total Housing Units: | 34 | 100% |
| Single-Family Units: | 29 | 85.29% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 5 | 14.71% |
| Total Housing Units: | 34 | 100% |
In 2024, 3.10% of adults (25+) have a bachelor's degree or higher, which is far lower than the national rate (35.70%). High school or higher is 85.90%, which is comparable to the national rate (89.60%). The uninsured rate is 8.80%, which is comparable to the national rate (8.40%). The share of people in poverty is 37.50%, which is comparable to the national rate (8.80%), up 37.00 percentage points since 2011 and above its 2019 pre-pandemic level by 37.00 percentage points. This signals a sharp increase in hardship - a shrinking consumer base, heavy pressure on public services, and job-market contraction risks. Among residents ages 3+, the largest enrollment group is elementary (60.00%). College enrollment is 0.00%, which is comparable to the national rate (26.70%), meaning the community mirrors broader higher-education participation.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 4 | 6.25% |
| 9th to 12th grade, no diploma: | 5 | 7.81% |
| High school graduate (includes equivalency): | 34 | 53.13% |
| Some college, no degree: | 13 | 20.31% |
| Associate's degree: | 6 | 9.38% |
| Bachelor's degree: | 2 | 3.13% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 64 | 100% |
| High school or higher: | 55 | 85.94% |
| Bachelor's degree or higher: | 2 | 3.13% |
| Private Insurance: | 57 | 54.81% |
| Public Insurance: | 40 | 38.46% |
| No Insurance: | 7 | 6.73% |
| Total: | 104 | 100% |
| Has Health Insurance: | 97 | 93.27% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 0.0% | 36.0% | 37.9% | 37.0% | 37.5% |
Note: Counts of Families & People in poverty are not published at the ZIP Code level due to small sample sizes. Percentages shown are survey estimates from the American Community Survey (ACS). They may differ from official poverty statistics. The U.S. Census Bureau defines poverty status by comparing a family's or individual's total income with federal poverty thresholds that vary by family size and composition.
| Nursery School, Preschool: | 2 | 20.00% |
| Kindergarten: | 2 | 20.00% |
| Elementary school (grades 1-8): | 6 | 60.00% |
| High school (grades 9-12): | 0 | 0.00% |
| College or graduate school: | 0 | 0.00% |
| Total: | 10 | 100% |
| Early Childhood: | 4 | 40.00% |
| K-12 (Primary & Secondary School): | 8 | 80.00% |
ZIP Code 52568 is designated for PO Box delivery only; business establishment and employment data are not available. USPS data shows 1 residential mailboxes and 1 business mailboxes, reflecting local delivery coverage.
| # Residential Mailboxes: | 1Source: USPS |
| # Business Mailboxes: | 1Source: USPS |
| Total Delivery Receptacles: | 26Source: USPS |
| Single Family Delivery Units: | 1Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 0Source: CBP |
| 1st Quarter Payroll: | $0Source: CBP |
| Annual Payroll: | $0Source: CBP |
| # of Employees: | 0Source: CBP |
ZIP Code 52568 is located in Keokuk County, Iowa, within the Metropolitan Statistical Area (CBSA ) and Iowa's 1st Congressional District. This area has a population of 0 people, about 0.00% of whom live in ZIP Code 52568. It covers 0.262 sq mi of land and a water area of 0 sq mi.
| CBSA Name: | --Source: Census |
| CBSA Number: | --Source: Census |
| CBSA Type: | --Source: Census |
| CBSA Division: | --Source: Census |
| CBSA Population: | 0Source: Census |
| MSA: | Source: Census |
| Land Area: | 0.262 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | 01Source: USPS |
| Congressional Land Area: | 12048.84 sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 1949935Source: Census |
| Place Name: | Martinsburg city; IowaSource: Census |
We could not locate which school district 52568 belongs to, but we will update this once new district data is released. There are no public schools nor private schools with a mailing address in this ZIP Code. Listing Nearby schools instead. It also has 6 colleges, universities or post secondary education institutions nearby which would be a short commute to.
Our sources include trusted federal and licensed data from the United States Postal Service, U.S. Census Bureau, U.S. Geological Survey, Centers for Medicare & Medicaid Services, and the National Center for Education Statistics, along with proprietary datasets created by ZIP-Codes.com. Data last updated on February 1, 2026.