| City: | Whitehorse, South Dakota |
| County: | Dewey County |
| Timezone: | Mountain (GMT -07:00) |
| Local Time: | 6:51:15 AM |
| Population: | 124 [See All] |
| Area Code: | 605 |
| Classification: | PO Box |
| Coordinates: | 45.1844, -100.8406 |
| Land Area: | 28.088 sq mi |
| Quick Link: |
Whitehorse sits in Dewey County, South Dakota, where 106 of the 124 residents (85%) are Native American. This small community spans 21.9 square miles of rural territory where PO Boxes provide the only mail delivery option across the entire service area.
The post office maintains 43 PO Boxes for 37 households. That's a 116% adoption rate, meaning the Whitehorse post office serves not just local residents but people from the surrounding area who travel here for mail access. This is a PO Box Only Zone. No street delivery exists anywhere in the territory.
Street names tell the story of this community's governance structure. BIA 2 and BIA 3 (Bureau of Indian Affairs roads) appear alongside a traditional numbered grid: 1st Avenue, 2nd Avenue, 3rd Avenue. The mix shows both federal infrastructure and local town planning.
With 3.35 people per household, families here are larger than the national average of 2.5. This pattern is common in tribal communities where extended families often share housing. Of the 51 total housing units, 37 are occupied and 14 stand vacant.
Forty percent of workers are employed in public administration. That's ten times the national average and likely indicates tribal government employment. Another 29% work from home, and 17% work in agriculture. Median household income is $56,250, and per capita income is $12,764. The population skews relatively young with a median age of 33.0 years.
Mail to Whitehorse must use a PO Box address. There's no alternative. The post office at 57661 handles all mail for this community and serves as a gathering point where residents pick up packages, government documents, and prescriptions.
Street names combine Bureau of Indian Affairs roads with a traditional numbered avenue grid, showing federal infrastructure alongside local town planning.
ZIP Code 57661 has 124 residents and 37 households (average 3.35 persons per household). The median age is 33.0 years, younger than the state (37.7) and younger than the nation (38.8). The gender split is 65.3% male and 34.7% female, which is much higher than the national male share (49.1%), making this a male-majority area. Largest groups are American Indian & Alaska Native (85.5%, much higher than the state average of 8.8% and well above the national average of 1.1%) and White (10.5%, much lower than the state average of 80.7% and well below the national average of 61.6%); Hispanic or Latino residents make up 0.0%, 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: | 124Source: Census DHC |
| 2024 ACS Population Estimate: | 177Source: Census ACS |
| 2026 ZC Population Estimate: | 0Source: ZIP-Codes.com |
| Population Density: | 4.4 people per sq mile |
| Average Income: | $55,000Source: Census ACS |
| Households: | 37Source: Census DHC |
| Average House Value: | $666,666,666Source: Census ACS |
| Persons Per Household: | 3.35Source: Census DHC |
| Average Family Size: | 3.93Source: Census ACS |
| Group | 2010 | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Census ACS Population Estimate | -- | 139 | 129 | 118 | 120 | 93 | 92 | 103 | 94 | 113 | 127 | 263 | 183 | 152 | 177 |
| Decennial Census | 88 | -- | -- | -- | -- | -- | -- | -- | -- | -- | 124 | -- | -- | -- | -- |
Median Age: 33
Male Median Age: 28.8
Female Median Age: 38.5
| 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 | 5 | 14 | 13 | 2 | 6 | 2 | 9 | 2 | 7 | 3 | 2 | 1 | 6 | 6 | 0 | 2 | 0 |
| Female | 4 | 3 | 3 | 3 | 2 | 3 | 2 | 3 | 0 | 3 | 1 | 1 | 10 | 2 | 0 | 1 | 2 | 0 |
| Total | 5 | 8 | 17 | 16 | 4 | 9 | 4 | 12 | 2 | 10 | 4 | 3 | 11 | 8 | 6 | 1 | 4 | 0 |
| White: | 13 | 10.83% |
| Black: | 0 | 0% |
| Hispanic:* | 0 | 0% |
| Asian: | 1 | 0.83% |
| American Indian: | 106 | 88.33% |
| Hawaiian: | 0 | 0% |
| Other: | 0 | 0% |
| Total: | 120 | 100% |
| Gender | Count | % | Median Age |
|---|---|---|---|
| Males: | 81 | 65.32% | 28.8 years |
| Females: | 43 | 34.68% | 38.5 years |
| Total: | 124 | 100% | 33.0 years |
| Native, born in the United States: | 175 | 98.87% |
| Native, born in PR, Island Areas, or abroad: | 2 | 1.13% |
| Foreign born, naturalized U.S. citizen: | 0 | 0.00% |
| Foreign born, not a U.S. citizen: | 0 | 0.00% |
| Total Population: | 177 | 100% |
| Total Native Population: | 177 | 100.00% |
| Total Foreign-born Population: | 0 | 0.00% |
In 2024, the Median household income is $55,000, which is well under the national median ($80,734), is up $26,761 (94.8%) since 2011 and above its 2019 pre-pandemic level by $55,000. Family households earn a median of $32,000 versus $0 for nonfamily households (a difference of $32,000). By gender, male median income is $38,333 and female is $35,341, which is far less than the national female median ($55,274), with a current gap of $2,992 that has widened from 2011 to 2024. The labor-force participation rate is 72.9%, which is markedly above the national rate (63.5%). The unemployment rate is 29.8%, which is markedly higher than the national rate (5.2%). The largest occupation group is Sales (36.4%).
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 | $28,239 | $31,250 | $31,635 | $31,731 | $82,813 | $69,583 | $69,167 | $71,250 | $0 | $52,679 | $55,875 | $60,893 | $56,250 | $55,000 |
| Median Family Income | $28,239 | $31,111 | $31,154 | $31,346 | $56,563 | $77,500 | $77,500 | $88,500 | $71,250 | $53,750 | $56,125 | $47,917 | $0 | $32,000 |
| Median NonFamily Income | $111,250 | $202,857 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 | $0 |
| Median Male Income | $0 | $165,714 | $167,750 | $106,250 | $0 | $43,333 | $35,714 | $34,688 | $33,750 | $24,464 | $32,857 | $36,667 | $37,708 | $38,333 |
| Median Female Income | $28,182 | $30,069 | $21,875 | $23,875 | $0 | $41,000 | $33,750 | $43,500 | $44,167 | $31,250 | $31,125 | $33,365 | $36,058 | $35,341 |
| Employed: | 66 | 51.16% |
| Unemployed: | 28 | 21.71% |
| Not In Labor Force: | 35 | 27.13% |
| Total: | 129 | 100% |
| Management, business, science, and arts: | 16 | 24.24% |
| Service: | 10 | 15.15% |
| Sales and Office: | 24 | 36.36% |
| Natural resources, construction, and maintenance: | 13 | 19.70% |
| Production, transportation, and material moving: | 3 | 4.55% |
| Total Civilian Employed Population: | 66 | 100% |
In 2024, the median home value is $0, which is much lower than the national median ($332,700), is down $9,999 (100.00%) since 2011 and below its 2019 pre-pandemic level by $141,700. The median gross rent is $616, which is well under the national median ($1,413), is up $281 (83.88%) since 2011 and above its 2019 pre-pandemic level by $616. Of occupied housing, owners make up 28.57% (0.00% with a mortgage, 100.00% free-and-clear) and renters 71.43% - 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 | $9,999 | $27,500 | $103,100 | $112,500 | $0 | $110,000 | $129,200 | $133,300 | $141,700 | $125,000 | $0 | $0 | $0 | $0 |
| Less than $500: | 7 | 17.50% |
| $500 to $999: | 28 | 70.00% |
| $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: | 5 | 12.50% |
| Total: | 40 | 100% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Median Rent | $335 | $335 | $338 | $337 | $675 | $661 | $0 | $0 | $0 | $0 | $0 | $613 | $603 | $616 |
| Owner Occupied (with mortgage): | 0 | 0.00% |
| Owner Occupied (free and clear, no mortgage): | 16 | 28.57% |
| Renter Occupied: | 40 | 71.43% |
| Total Occupied Housing Units: | 56 | 100% |
| Occupied Housing Units: | 56 | 100.00% |
| Vacant Housing Units (not graphed): | 0 | 0.00% |
| Total Housing Units: | 56 | 100% |
| Single-Family Units: | 47 | 83.93% |
| Multi-Family Units: | 9 | 16.07% |
| Other Units: | 0 | 0.00% |
| Total Housing Units: | 56 | 100% |
In 2024, 5.80% 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 69.20%, which is far lower than the national rate (89.60%). The uninsured rate is 41.20%, which is far higher than the national rate (8.40%). Private coverage is 16.40%, which is far lower than the national rate (67.10%). The share of people in poverty is 38.90%, which is far higher than the national rate (8.80%), up 18.50 percentage points since 2011 and above its 2019 pre-pandemic level by 15.50 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 (65.52%). College enrollment is 18.97%, 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: | 7 | 6.73% |
| 9th to 12th grade, no diploma: | 25 | 24.04% |
| High school graduate (includes equivalency): | 39 | 37.50% |
| Some college, no degree: | 27 | 25.96% |
| Associate's degree: | 0 | 0.00% |
| Bachelor's degree: | 6 | 5.77% |
| Graduate or professional degree: | 0 | 0.00% |
| Total: | 104 | 100% |
| High school or higher: | 72 | 69.23% |
| Bachelor's degree or higher: | 6 | 5.77% |
| Private Insurance: | 29 | 16.20% |
| Public Insurance: | 77 | 43.02% |
| No Insurance: | 73 | 40.78% |
| Total: | 179 | 100% |
| Has Health Insurance: | 106 | 59.22% |
| Group | 2011 | 2102 | 2013 | 2014 | 2015 | 2016 | 2017 | 2018 | 2019 | 2020 | 2021 | 2022 | 2023 | 2024 |
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| % of People in Poverty | 29.0% | 23.3% | 26.9% | 23.1% | 38.1% | 13.6% | 8.3% | 18.2% | 32.0% | 25.8% | 34.0% | 34.9% | 47.5% | 38.9% |
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): | 38 | 65.52% |
| High school (grades 9-12): | 9 | 15.52% |
| College or graduate school: | 11 | 18.97% |
| Total: | 58 | 100% |
| Early Childhood: | 0 | 0.00% |
| K-12 (Primary & Secondary School): | 47 | 81.03% |
ZIP Code 57661 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: | 42Source: 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 57661 is located in Dewey 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 57661. It covers 28.088 sq mi of land and a water area of 0.187 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: | 28.088 sq miSource: Census |
| Water Area: | 0.187 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: | 4671140Source: Census |
| Place Name: | Whitehorse CDP; South DakotaSource: Census |
We could not locate which school district 57661 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.