ZIP Code 57656, South Dakota
ZIP Code 57656 profile, demographic data, and geographic information.
ZCTA5 57656 is a 5-digit ZIP Code area located in Corson County / Dewey County, South Dakota. As of official census estimates, it has a reported population of 1,000. The land area covers 389.44 sq mi. [1]
Demographics & Population
| Demographic Metric | Estimate / Count | Margin of Error | Survey Period / Source |
|---|---|---|---|
| Total Population | 1,000 | ±172 | 2020-2024 / Census ACS 5-Year 2024 |
| Median Age | 28.1 yrs | ±5.1 | 2020-2024 / Census ACS 5-Year 2024 |
| Total Households | 371 | ±56 | 2020-2024 / Census ACS 5-Year 2024 |
Source: U.S. Census Bureau (PEP, ACS 5-Year).
Housing & Real Estate Profile
| Housing Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Total Housing Units | 416 | ±58 |
| Occupied Housing Units | 371 | ±56 |
| Vacant Housing Units | 45 | ±15 |
| Median Home Value | $86,300 | ±$18,370 |
| Median Gross Rent | $546 | ±$232 |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Economy & Workforce
| Economic Metric | Estimate / Value | Margin of Error |
|---|---|---|
| Median Household Income | $66,094 | ±$6,698 |
| Per Capita Income | $30,983 | ±$3,869 |
| Poverty Rate | 13.2% | ±7.4% |
| Population Below Poverty Level | 129 | ±75 |
| Unemployment Rate | 4.7% | ±3.8% |
| Civilian Labor Force, Employed | 409 | ±83 |
| Broadband Internet Rate | 83.3% | ±7.3% |
Source: U.S. Census Bureau ACS 5-Year (2020-2024).
Local Government & Public Administration
Authoritative general-purpose local government units serving this area
U.S. Census Bureau GUS (2026) / GMAF
| Government Unit | Unit Type | Jurisdiction Role | Contact / Address |
|---|---|---|---|
|
COUNTY OF CORSON
GUS Population: 3,747 (2024)
ID: 174986
|
County | Official County Government |
Contact: COUNTY AUDITOR
PO BOX 255, MC INTOSH SD 57641-0255
|
Education
Listing 3 local institutions (NCES 2024-2025)
External reference via K12Guides
| Institution | Type | Grades | Location |
|---|---|---|---|
| Regular School Nearby | PK-05 | Timber Lake, SD | |
| Regular School Nearby | 09-12 | Timber Lake, SD | |
| Regular School Nearby | 06-08 | Timber Lake, SD |
Source: k12guides.com.
Community Facilities & Infrastructure
Displaying 1 civic institution across 1 datasets queried
CMS • IPEDS • IMLS
| Facility Name | Category | Relationship | Address / Location | Contact |
|---|---|---|---|---|
|
DEWEY COUNTY LIBRARY
|
Library | 1.6 mi away | 712 MAIN, TIMBER LAKE, SD, 57656 |
(605) 865-3541
|
Distances calculated from authoritative source coordinates. Source: CMS, IMLS, NCES IPEDS.
Climate & Weather Observations
NOAA Monthly Climate Normals
Observation Station: Climate data reflects NOAA 1991–2020 standard normals recorded at TIMBER LAKE, SD US, located 1.5 miles from ZCTA5 57656. Local microclimates, topography, and elevation may cause municipal conditions to differ.
| Month | High (°F) | Low (°F) | Mean (°F) | Precip (in) | Snow (in) |
|---|---|---|---|---|---|
| January | 26.7° | 7.1° | 16.9° | 0.49" | 6.4" |
| February | 30.7° | 10.8° | 20.7° | 0.67" | 7.5" |
| March | 43.9° | 21.2° | 32.6° | 1.00" | 6.5" |
| April | 57.7° | 31.9° | 44.8° | 1.83" | 5.2" |
| May | 69.1° | 43.4° | 56.2° | 2.90" | 0.6" |
| June | 78.7° | 53.9° | 66.3° | 3.56" | 0.0" |
| July | 85.9° | 59.4° | 72.7° | 2.85" | 0.0" |
| August | 85.1° | 57.5° | 71.3° | 1.78" | 0.0" |
| September | 76.1° | 48.1° | 62.1° | 1.53" | 0.0" |
| October | 58.7° | 34.6° | 46.7° | 1.66" | 2.3" |
| November | 42.6° | 21.7° | 32.1° | 0.57" | 4.4" |
| December | 30.2° | 11.3° | 20.8° | 0.57" | 8.3" |
Source: NOAA U.S. Climate Normals (1991–2020).
Local Weather Forecast
Weather forecast data is currently unavailable in the local cache.
Nearby Cities & Communities
Listing adjacent communities by spatial proximity (miles)
Proximity discovery
| Community Name | Classification | Distance | Population |
|---|---|---|---|
| Timber Lake city | City | 1.8 mi | — |
| Whitehorse CDP | CDP | 14.3 mi | — |
| Isabel town | Town | 15.9 mi | — |
| Green Grass CDP | CDP | 20.4 mi | — |
| Little Eagle CDP | CDP | 23.6 mi | — |
| Bullhead CDP | CDP | 24.2 mi | — |
Sources & Data Provenance
- Geographic Classification & Identifiers: U.S. Census Bureau Gazetteer (2026) and TIGER/Line Shapefiles. GEOID: 57656. • Official Source Dataset →
- Socioeconomic & Housing Metrics: U.S. Census Bureau American Community Survey (ACS) 5-year estimates and Population Estimates Program (PEP). Margin of Error (MOE) intervals are reported where published; suppressed values are never estimated or replaced with false zeros.
- Civic Directory Datasets: Centers for Medicare & Medicaid Services (CMS Hospital Directory), National Center for Education Statistics (NCES IPEDS Postsecondary Directory), and Institute of Museum and Library Services (IMLS Public Libraries Survey). Airport landing facilities are provided by airport-data.com.
- Weather & Climate Observations: National Oceanic and Atmospheric Administration (NOAA) U.S. Climate Normals 1991–2020 and National Weather Service (NWS) point forecasts.