| City: | Marty, South Dakota |
| County: | Charles Mix County |
| Timezone: | Central (GMT -06:00) |
| Local Time: | 7:49:26 AM |
| Population: | 619 [See All] |
| Area Code: | 605 |
| Classification: | PO Box |
| Coordinates: | 43.0015, -98.4270 |
| Land Area: | 2.48 sq mi |
| Quick Link: |
Marty's post office serves one of South Dakota's most concentrated Native American communities. Of the 619 residents, 600 (97%) identify as Native American. This makes 57361 one of the most demographically unified ZIP codes in the state.
For 49 households, a PO Box at the Marty post office is the only delivery option. The ZIP doesn't offer street delivery, though College Loop is the one street name in USPS records. With an adoption rate of 0.69, the 49 PO Boxes serve mostly local families rather than regional customers.
The community's 71 occupied households support 619 people, giving a household size ratio of 8.7. That's well above the national average and typical of tribal communities where extended families share homes. The median age of 30.6 skews younger than most rural South Dakota towns.
The post office sits within Charles Mix County on what was historically tribal land. Median household income is $20,417, and median property values aren't tracked by census data. Seven percent of workers operate from home. The community maintains ties to traditional structures while adapting to contemporary postal realities.
Only College Loop appears in postal records, suggesting the street serves an institutional or educational facility. The name doesn't reflect traditional tribal road naming patterns, which indicates formal civic infrastructure rather than reservation routing systems.
ZIP Code 57361 has 619 residents and 71 households (average 4.17 persons per household). The median age is 30.6 years, significantly younger than the state (37.7) and significantly younger than the nation (38.8). The gender split is 45.6% male and 54.4% female, which is lower than the state male share (50.3%), making this a female-majority area. Largest groups are American Indian & Alaska Native (96.9%, much higher than the state average of 8.8% and well above the national average of 1.1%) and White (2.9%, much lower than the state average of 80.7% and well below the national average of 61.6%); Hispanic or Latino residents make up 2.1%, which is much lower than the national average (18.7%), and American Indian & Alaska Native share is much higher than both the state (8.8%) and national averages (1.1%).
Explore More:Population Over TimeBy Age & GenderBy RaceBy GenderNativity & Citizenship
| 2020 Population: | 619Source: Census DHC |
| 2024 ACS Population Estimate: | 278Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 249.6 people per sq mile |
| Average Income: | $19,830Source: Census ACS |
| Households: | 71Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 4.17Source: Census DHC |
| Average Family Size: | 5.22Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 144 | 115 | 118 | 203 | 180 | 197 | 207 | 216 | 120 | 108 | 211 | 191 | 250 | 278 |
| Decennial Census | 198 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 619 | -- | -- | -- | -- |
Median Age: 30.6
Male Median Age: 31.7
Female Median Age: 30.1
| 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 | 23 | 21 | 24 | 18 | 19 | 24 | 28 | 18 | 13 | 9 | 16 | 24 | 18 | 13 | 7 | 4 | 2 | 1 |
| Female | 25 | 35 | 18 | 27 | 27 | 35 | 30 | 32 | 20 | 20 | 17 | 26 | 16 | 2 | 6 | 0 | 0 | 1 |
| Total | 48 | 56 | 42 | 45 | 46 | 59 | 58 | 50 | 33 | 29 | 33 | 50 | 34 | 15 | 13 | 4 | 2 | 2 |
| White: | 18 | 2.85% |
| Black: | 0 | 0% |
| Hispanic:* | 13 | 2.06% |
| Asian: | 0 | 0% |
| American Indian: | 600 | 95.09% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 631 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 282 | 45.56% | 31.7 years |
| Females: | 337 | 54.44% | 30.1 years |
| Total: | 619 | 100% | 30.6 years |
| Native, born in the United States: | 278 | 100.00% |
| 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: | 0 | 0.00% |
| Total Population: | 278 | 100% |
| Total Native Population: | 278 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $19,830, which is well under the national median ($80,734), is up $38 (0.2%) since 2011 and below its 2019 pre-pandemic level by $18,384. Family households earn a median of $18,807 versus $0 for nonfamily households (a difference of $18,807). By gender, male median income is $21,875 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $21,875 that has widened from 2011 to 2024. The labor-force participation rate is 48.7%, which is considerably lower than the national rate (63.5%). The unemployment rate is 49.1%, which is markedly higher than the national rate (5.2%). The largest occupation group is Service (91.2%).
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 | $19,792 | $18,571 | $15,833 | $29,063 | $30,536 | $35,625 | $35,227 | $37,083 | $38,214 | $0 | $16,750 | $19,808 | $20,417 | $19,830 |
| Median Family Income | $53,125 | $53,000 | $9,167 | $32,000 | $35,833 | $35,750 | $36,250 | $39,219 | $39,286 | $0 | $16,719 | $19,135 | $19,375 | $18,807 |
| Median NonFamily Income | $18,125 | $18,214 | $9,667 | $9,732 | $0 | $0 | $30,625 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Male Income | $23,750 | $27,955 | $19,821 | $23,750 | $0 | $0 | $0 | $31,000 | $32,250 | $32,188 | $32,813 | $0 | $21,964 | $21,875 |
| Median Female Income | $26,250 | $26,071 | $27,321 | $32,841 | $32,841 | $33,875 | $35,208 | $35,833 | $0 | $0 | $0 | $0 | $0 | $0 |
| Employed: | 57 | 24.78% |
| Unemployed: | 55 | 23.91% |
| Not In Labor Force: | 118 | 51.30% |
| Total: | 230 | 100% |
| Management, business, science, and arts: | 5 | 8.77% |
| Service: | 52 | 91.23% |
| Sales and Office: | 0 | 0.00% |
| Natural resources, construction, and maintenance: | 0 | 0.00% |
| Production, transportation, and material moving: | 0 | 0.00% |
| Total Civilian Employed Population: | 57 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $21,900 (100.00%) since 2011 and above its 2019 pre-pandemic level by $0. The median gross rent is $554, which is far less than the national median ($1,413), is up $455 (459.60%) since 2011 and above its 2019 pre-pandemic level by $190. Of occupied housing, owners make up 25.29% (0.00% with a mortgage, 100.00% free-and-clear) and renters 74.71% - making this ZIP Code higher than national rental averages. 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 | $21,900 | $23,000 | $23,800 | $27,500 | $0 | $0 | $0 | $0 | $0 | $0 | $23,300 | $23,100 | $0 | $0 |
| Less than $500: | 13 | 20.00% |
| $500 to $999: | 42 | 64.62% |
| $1,000 to $1,499: | 0 | 0.00% |
| $1,500 to $1,999: | 0 | 0.00% |
| $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: | 10 | 15.38% |
| Total: | 65 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $99 | $183 | $99 | $359 | $369 | $519 | $521 | $555 | $364 | $373 | $372 | $520 | $519 | $554 |
| Owner Occupied (with mortgage): | 0 | 0.00% |
| Owner Occupied (free and clear, no mortgage): | 22 | 25.29% |
| Renter Occupied: | 65 | 74.71% |
| Total Occupied Housing Units: | 87 | 100% |
| Occupied Housing Units: | 87 | 100.00% |
| Vacant Housing Units (not graphed): | 0 | 0.00% |
| Total Housing Units: | 87 | 100% |
| Single-Family Units: | 74 | 85.06% |
| Multi-Family Units: | 13 | 14.94% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 87 | 100% |
In 2024, 0.00% 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 82.30%, which is comparable to the national rate (89.60%). The uninsured rate is 59.40%, which is far higher than the national rate (8.40%). Private coverage is 6.50%, which is far lower than the national rate (67.10%). The share of people in poverty is 81.20%, which is far higher than the national rate (8.80%), up 49.00 percentage points since 2011 and above its 2019 pre-pandemic level by 59.70 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 (56.86%). 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: | 10 | 6.10% |
| 9th to 12th grade, no diploma: | 19 | 11.59% |
| High school graduate (includes equivalency): | 78 | 47.56% |
| Some college, no degree: | 13 | 7.93% |
| Associate's degree: | 44 | 26.83% |
| Bachelor's degree: | 0 | 0.00% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 164 | 100% |
| High school or higher: | 135 | 82.32% |
| Bachelor's degree or higher: | 0 | 0.00% |
| Private Insurance: | 18 | 6.36% |
| Public Insurance: | 100 | 35.34% |
| No Insurance: | 165 | 58.30% |
| Total: | 283 | 100% |
| Has Health Insurance: | 118 | 41.70% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 25.0% | 44.4% | 60.0% | 36.7% | 25.0% | 23.3% | 12.9% | 7.7% | 14.3% | 45.5% | 72.7% | 87.0% | 74.0% | 81.2% |
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: | 0 | 0.00% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 29 | 56.86% |
| High school (grades 9-12): | 22 | 43.14% |
| College or graduate school: | 0 | 0.00% |
| Total: | 51 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 51 | 100.00% |
ZIP Code 57361 supports both business and residential activity. According to the Business Census (2024), there are 3 business establishments, employing about 103 people with an annual payroll of $4,400,000.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 57Source: USPS |
| Single Family Delivery Units: | 0Source: USPS |
| Multi Family Delivery Units: | 0Source: USPS |
| # of Businesses: | 3Source: CBP |
| 1st Quarter Payroll: | $942,000Source: CBP |
| Annual Payroll: | $4,400,000Source: CBP |
| # of Employees: | 103Source: CBP |
ZIP Code 57361 is located in Charles Mix County, South Dakota, within the Metropolitan Statistical Area (CBSA ). This area has a population of 0 people, about 0.00% of whom live in ZIP Code 57361. It covers 2.48 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: | 2.48 sq miSource: Census |
| Water Area: | --Source: Census |
| Congressional District: | No DistrictsSource: USPS |
| Congressional Land Area: | sq miSource: Census |
| PMSA: | Source: Census |
| Intro Date: | < 2004-10Source: ZIP-Codes.com |
| Place FIPS Code: | 4641180Source: Census |
| Place Name: | Marty CDP; South DakotaSource: Census |
We could not locate which school district 57361 belongs to, but we will update this once new district data is released. There are 1 public school(s) in this ZIP Code, and we have located 3 private school(s). 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.