| City: | Little Eagle, South Dakota |
| County: | Corson County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 6:51:02 AM |
| Population: | 398 [See All] |
| Area Code: | 605 |
| Classification: | PO Box |
| Coordinates: | 45.6755, -100.8036 |
| Land Area: | 1.978 sq mi |
| Quick Link: |
Little Eagle is a community on the Standing Rock Sioux Reservation in Corson County, South Dakota. Of the 398 residents, 97% are Native American (387 people). This is one of South Dakota's smallest PO Box-classified ZIPs by population, yet it serves as a critical mail access point for the surrounding area.
This is designated a PO Box Only Zone. There's no alternative mail delivery across this territory. The Little Eagle post office maintains 101 PO Boxes for 68 households, creating a 1.49 adoption rate that extends beyond the immediate community. Extended family households are common here, with an average of 5.85 people per household compared to the national average of 2.5.
While classified as PO Box only, the ZIP includes limited carrier delivery with one city route and one rural route serving 52 street addresses. Street names like Running Antelope Drive, Golden Eagle Drive, and BIA Road 4 blend cultural heritage with federal infrastructure. Grand River appears in multiple forms (Drive, Road, Trail), referencing the major waterway that flows through Standing Rock lands.
This is a young community. Median age is 20.8 years. Median household income stands at $22,125, and per capita income is $4,095. Among adults 25 and older (201 people), none hold bachelor's degrees. Of the 75 housing units, 68 are occupied, with 46 renter-occupied and 22 owner-occupied.
For this community, the post office isn't just a mail facility. It's essential infrastructure where residents receive government documents, medical prescriptions, and packages in an area where physical addressing remains limited and distances can be significant.
PO Box addresses are strongly recommended for reliable delivery:
[Recipient Name]
PO Box [Number]
Little Eagle, SD 57639Street names blend cultural references (Running Antelope, Golden Eagle) with Bureau of Indian Affairs infrastructure and the Grand River waterway.
ZIP Code 57639 has 398 residents and 68 households (average 5.85 persons per household). The median age is 20.8 years, significantly younger than the state (37.7) and significantly younger than the nation (38.8). The gender split is 51.3% male and 48.7% female, which is slightly higher than the national male share (49.1%), making this a male-majority area. Largest groups are American Indian & Alaska Native (97.2%, much higher than the state average of 8.8% and well above the national average of 1.1%) and Hispanic or Latino (1.8%); Hispanic or Latino residents make up 1.8%, 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: | 398Source: Census DHC |
| 2024 ACS Population Estimate: | 290Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 201.2 people per sq mile |
| Average Income: | $21,250Source: Census ACS |
| Households: | 68Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 5.85Source: Census DHC |
| Average Family Size: | 6.24Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 301 | 351 | 377 | 351 | 413 | 414 | 378 | 338 | 383 | 372 | 366 | 355 | 373 | 290 |
| Decennial Census | 371 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 398 | -- | -- | -- | -- |
Median Age: 20.8
Male Median Age: 22.3
Female Median Age: 19.3
| 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 | 21 | 29 | 32 | 14 | 18 | 12 | 12 | 9 | 7 | 12 | 10 | 12 | 7 | 5 | 1 | 0 | 1 | 2 |
| Female | 23 | 25 | 33 | 18 | 16 | 8 | 12 | 4 | 6 | 9 | 6 | 9 | 11 | 7 | 7 | 0 | 0 | 0 |
| Total | 44 | 54 | 65 | 32 | 34 | 20 | 24 | 13 | 13 | 21 | 16 | 21 | 18 | 12 | 8 | 0 | 1 | 2 |
| White: | 6 | 1.50% |
| Black: | 0 | 0% |
| Hispanic:* | 7 | 1.75% |
| Asian: | 0 | 0% |
| American Indian: | 387 | 96.75% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 400 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 204 | 51.26% | 22.3 years |
| Females: | 194 | 48.74% | 19.3 years |
| Total: | 398 | 100% | 20.8 years |
| Native, born in the United States: | 290 | 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: | 290 | 100% |
| Total Native Population: | 290 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $21,250, which is well under the national median ($80,734), is up $2,031 (10.6%) since 2011 and above its 2019 pre-pandemic level by $6,607. Family households earn a median of $25,313 versus $0 for nonfamily households (a difference of $25,313). By gender, male median income is $0 and female is $0, which is considerably lower than the national female median ($55,274), with a current gap of $0 that has widened from 2011 to 2024. The labor-force participation rate is 45.9%, which is markedly below the national rate (63.5%). The unemployment rate is 55.1%, which is much higher than the national rate (5.2%). The largest occupation group is Service (34.3%).
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 | $19,219 | $30,833 | $20,000 | $19,044 | $18,603 | $18,125 | $16,667 | $14,922 | $14,643 | $13,594 | $17,917 | $18,125 | $22,125 | $21,250 |
| Median Family Income | $19,688 | $30,833 | $26,250 | $19,464 | $17,083 | $15,250 | $15,000 | $16,563 | $16,042 | $14,375 | $20,714 | $21,250 | $25,234 | $25,313 |
| Median NonFamily Income | $16,875 | $32,500 | $0 | $18,750 | $0 | $0 | $18,929 | $11,667 | $10,938 | $7,188 | $7,813 | $6,875 | $0 | $0 |
| Median Male Income | $20,313 | $33,250 | $19,667 | $19,911 | $0 | $36,250 | $19,375 | $41,250 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Female Income | $23,438 | $26,875 | $30,208 | $32,708 | $0 | $26,875 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Employed: | 35 | 20.59% |
| Unemployed: | 43 | 25.29% |
| Not In Labor Force: | 92 | 54.12% |
| Total: | 170 | 100% |
| Management, business, science, and arts: | 5 | 14.29% |
| Service: | 12 | 34.29% |
| Sales and Office: | 5 | 14.29% |
| Natural resources, construction, and maintenance: | 4 | 11.43% |
| Production, transportation, and material moving: | 9 | 25.71% |
| Total Civilian Employed Population: | 35 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $68,300 (100.00%) since 2011 and below its 2019 pre-pandemic level by $60,000. The median gross rent is $243, which is well under the national median ($1,413), is down $365 (60.03%) since 2011 and below its 2019 pre-pandemic level by $107. Of occupied housing, owners make up 11.11% (0.00% with a mortgage, 100.00% free-and-clear) and renters 88.89% - 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 | $68,300 | $56,900 | $55,000 | $50,600 | $51,300 | $39,400 | $38,800 | $62,500 | $60,000 | $38,200 | $0 | $0 | $0 | $0 |
| Less than $500: | 41 | 64.06% |
| $500 to $999: | 12 | 18.75% |
| $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: | 11 | 17.19% |
| Total: | 64 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $608 | $382 | $361 | $356 | $385 | $393 | $423 | $453 | $350 | $253 | $250 | $244 | $244 | $243 |
| Owner Occupied (with mortgage): | 0 | 0.00% |
| Owner Occupied (free and clear, no mortgage): | 8 | 11.11% |
| Renter Occupied: | 64 | 88.89% |
| Total Occupied Housing Units: | 72 | 100% |
| Occupied Housing Units: | 72 | 82.76% |
| Vacant Housing Units (not graphed): | 15 | 17.24% |
| Total Housing Units: | 87 | 100% |
| Single-Family Units: | 79 | 90.80% |
| Multi-Family Units: | 0 | 0.00% |
| Other Units: | 8 | 9.20% |
| 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 76.90%, which is far lower than the national rate (89.60%). The uninsured rate is 10.70%, which is comparable to the national rate (8.40%). Private coverage is 8.30%, which is far lower than the national rate (67.10%). Public coverage is 81.00%, which is far higher than the national rate (36.70%). The share of people in poverty is 59.40%, which is far higher than the national rate (8.80%), up 26.00 percentage points since 2011 and below its 2019 pre-pandemic level by 3.30 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 (54.08%). College enrollment is 5.10%, which is far lower than the national rate (26.70%), indicating the community may be more oriented toward vocational/trade or direct-to-workforce opportunities.
Explore More:Educational AttainmentHealth InsurancePoverty Over TimeSchool Enrollment
| Less than 9th grade: | 10 | 8.26% |
| 9th to 12th grade, no diploma: | 18 | 14.88% |
| High school graduate (includes equivalency): | 63 | 52.07% |
| Some college, no degree: | 9 | 7.44% |
| Associate's degree: | 21 | 17.36% |
| Bachelor's degree: | 0 | 0.00% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 121 | 100% |
| High school or higher: | 93 | 76.86% |
| Bachelor's degree or higher: | 0 | 0.00% |
| Private Insurance: | 24 | 8.28% |
| Public Insurance: | 235 | 81.03% |
| No Insurance: | 31 | 10.69% |
| Total: | 290 | 100% |
| Has Health Insurance: | 259 | 89.31% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 41.7% | 48.1% | 54.9% | 65.5% | 65.3% | 70.4% | 75.0% | 69.2% | 71.0% | 78.8% | 68.3% | 77.4% | 67.7% | 59.4% |
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: | 6 | 6.12% |
| Kindergarten: | 0 | 0.00% |
| Elementary school (grades 1-8): | 53 | 54.08% |
| High school (grades 9-12): | 34 | 34.69% |
| College or graduate school: | 5 | 5.10% |
| Total: | 98 | 100% |
| Early Childhood: | 6 | 6.12% |
| K-12 (Primary & Secondary School): | 87 | 88.78% |
ZIP Code 57639 is designated for PO Box delivery only; business establishment and employment data are not available.
| # Residential Mailboxes: | 0Source: USPS |
| # Business Mailboxes: | 0Source: USPS |
| Total Delivery Receptacles: | 122Source: USPS |
| Single Family Delivery Units: | 0Source: 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 57639 is located in Corson 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 57639. It covers 1.978 sq mi of land and a water area of 0.117 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: | 1.978 sq miSource: Census |
| Water Area: | 0.117 sq miSource: 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: | 4637900Source: Census |
| Place Name: | Little Eagle CDP; South DakotaSource: Census |
We could not locate which school district 57639 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 March 1, 2026.