ZIP code · Trail City · South Dakota · United States
ZIP code 57657 — Trail City
ZIP code 57657 serves Trail City, South Dakota.
- Postal code
- 57657Single source Value from one source, not cross-checked.
- City
- Trail City
- County
- Corson FIPS 46031
- State
- South Dakota
- Country
- United States
- Coordinates
- 45.4725, -100.7254 — precision precise (locality)
View on OpenStreetMap - Population
- 203 (ZCTA, ACS 5-year)
- Population density
- 1 / sq mi
- Land area
- 191.2 sq mi (495.2 km²) (ZCTA, ACS 5-year)
- Median household income
- $97,500
- Per-capita income
- $33,183
- Median age
- 41.5
- Households
- 60
- Housing units
- 65
- Median home value
- $74,600
- 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
- 605 (from the nearest rate centre)Telephone 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 57657 with another ZIP · ZIPs within 25 miles · distance from 57657
Map of ZIP code 57657
Climate — monthly normals
Warmest month Jul (avg high 85°F), coldest Jan (avg low 6°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 25 | 29 | 42 | 56 | 68 | 78 | 85 | 84 | 74 | 58 | 42 | 29 |
| Avg low °F | 6 | 9 | 20 | 32 | 45 | 56 | 61 | 59 | 50 | 37 | 23 | 11 |
| Precip in | 0.3 | 0.4 | 0.6 | 1.3 | 3.1 | 3.1 | 2.4 | 2.2 | 1.6 | 1.6 | 0.4 | 0.3 |
NOAA 1991–2020 climate normals from the nearest station: MOBRIDGE 2NNW (14.9 mi) · NOAA NCEI
Places in ZIP 57657
- 1 post offices
- 1 places of worship
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