ZIP code · Fort Thompson · South Dakota · United States
ZIP code 57339 — Fort Thompson
ZIP code 57339 serves Fort Thompson, South Dakota.
- Postal code
- 57339Single source Value from one source, not cross-checked.
- City
- Fort Thompson
- County
- Buffalo FIPS 46017
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.0517, -99.3973 — precision precise (locality)
View on OpenStreetMap - Population
- 1,310 (ZCTA, ACS 5-year)
- Population density
- 24 / sq mi
- Land area
- 54.2 sq mi (140.4 km²) (ZCTA, ACS 5-year)
- Median household income
- $42,417
- Per-capita income
- $15,038
- Median age
- 26.7
- Households
- 355
- Housing units
- 422
- Median home value
- $101,100
- Median gross rent
- $535 / month
- Congressional district
- SD At-large (119th Congress)
- USDA hardiness zone
- 4b (-25 to -20 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Chicago (UTC−6 / UTC−5 DST)
- Area code
- 605Telephone area codes serving this ZIP (NANPA central-office assignments). A ZIP and an area code are different boundaries; at a border both codes may apply.
Tools: compare 57339 with another ZIP · ZIPs within 25 miles · distance from 57339
Map of ZIP code 57339
Climate — monthly normals
Warmest month Jul (avg high 88°F), coldest Jan (avg low 7°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 29 | 35 | 46 | 59 | 71 | 80 | 88 | 86 | 78 | 62 | 46 | 34 |
| Avg low °F | 7 | 10 | 20 | 31 | 44 | 55 | 61 | 59 | 50 | 36 | 23 | 11 |
| Precip in | 0.5 | 0.5 | 0.9 | 1.8 | 3.1 | 3.8 | 2.8 | 2.2 | 2.0 | 1.6 | 0.4 | 0.3 |
NOAA 1991–2020 climate normals from the nearest station: LAKE SHARPE PRJ (3.2 mi) · NOAA NCEI
Places in ZIP 57339
- 1 schools
- 1 hospitals & clinics
- 1 supermarkets
- 2 parks
- 1 gyms & sports centres
- 1 post offices
- 5 places of worship
- 2 gas stations
Places mapped inside this ZIP’s ZCTA area in OpenStreetMap. OSM is community-maintained: counts reflect what has been mapped, and completeness varies by area — treat them as at-least figures. © OpenStreetMap contributors (ODbL) · Methodology
About this page
US ZIP codes have five digits. They are postal routing areas, not administrative boundaries: a ZIP can span more than one city or county, and the city shown is the primary USPS name for that code.
GeoNames · U.S. Census Bureau (ACS) · U.S. Census Bureau · NOAA NCEI · usda-phzm. Data generated on 2026-08-21. Methodology · Report an error on this page