ZIP code · Spearfish · South Dakota · United States
ZIP code 57783 — Spearfish
ZIP code 57783 serves Spearfish, South Dakota.
- Postal code
- 57783Single source Value from one source, not cross-checked.
- City
- Spearfish
- County
- Lawrence FIPS 46081
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.4946, -103.8650 — precision precise (locality)
View on OpenStreetMap - Population
- 16,929 (ZCTA, ACS 5-year)
- Population density
- 79 / sq mi
- Land area
- 213.2 sq mi (552.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $64,970
- Per-capita income
- $44,716
- Median age
- 40
- Households
- 7,614
- Housing units
- 8,347
- Median home value
- $332,300
- Median gross rent
- $946 / month
- Congressional district
- SD At-large (119th Congress)
- USDA hardiness zone
- 5b (-15 to -10 °F)Planting / growing zone from the 2023 USDA Plant Hardiness Zone Map: average annual extreme minimum temperature, 1991–2020.
- Time zone
- America/Denver (UTC−7 / UTC−6 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 57783 with another ZIP · ZIPs within 25 miles · distance from 57783
Map of ZIP code 57783
Climate — monthly normals
Warmest month Jul (avg high 84°F), coldest Jan (avg low 16°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 36 | 37 | 46 | 55 | 64 | 75 | 84 | 83 | 74 | 58 | 46 | 37 |
| Avg low °F | 16 | 16 | 24 | 32 | 42 | 51 | 58 | 56 | 48 | 35 | 26 | 18 |
| Precip in | 0.6 | 0.9 | 1.2 | 2.2 | 3.7 | 3.5 | 2.4 | 1.9 | 1.6 | 2.0 | 0.7 | 0.7 |
NOAA 1991–2020 climate normals from the nearest station: SPEARFISH (0.4 mi) · NOAA NCEI
Places in ZIP 57783
- 10 schools
- 7 hospitals & clinics
- 5 doctors & dentists
- 3 pharmacies
- 4 supermarkets
- 45 restaurants & cafés
- 7 bars & pubs
- 19 parks
- 18 playgrounds
- 4 gyms & sports centres
- 1 libraries
- 2 post offices
- 11 places of worship
- 8 banks
- 12 gas stations
- 2 EV charging stations
- 4 police & fire 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