ZIP code · Castlewood · South Dakota · United States
ZIP code 57223 — Castlewood
ZIP code 57223 serves Castlewood, South Dakota.
- Postal code
- 57223Single source Value from one source, not cross-checked.
- City
- Castlewood
- County
- Hamlin FIPS 46057
- State
- South Dakota
- Country
- United States
- Coordinates
- 44.7313, -97.0204 — precision precise (locality)
View on OpenStreetMap - Population
- 1,367 (ZCTA, ACS 5-year)
- Population density
- 11 / sq mi
- Land area
- 124.6 sq mi (322.8 km²) (ZCTA, ACS 5-year)
- Median household income
- $88,571
- Per-capita income
- $37,346
- Median age
- 36.9
- Households
- 494
- Housing units
- 548
- Median home value
- $229,500
- Median gross rent
- $1,096 / month
- Congressional district
- SD At-large (119th Congress)
- USDA hardiness zone
- 4a (-30 to -25 °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 57223 with another ZIP · ZIPs within 25 miles · distance from 57223
Map of ZIP code 57223
Climate — monthly normals
Warmest month Jul (avg high 81°F), coldest Jan (avg low 2°F).
| Jan | Feb | Mar | Apr | May | Jun | Jul | Aug | Sep | Oct | Nov | Dec | |
|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Avg high °F | 20 | 26 | 38 | 53 | 65 | 76 | 81 | 79 | 71 | 56 | 39 | 25 |
| Avg low °F | 2 | 5 | 18 | 30 | 43 | 54 | 58 | 56 | 46 | 33 | 20 | 8 |
| Precip in | 0.5 | 0.6 | 1.2 | 2.1 | 3.9 | 4.0 | 3.5 | 2.8 | 3.1 | 1.9 | 0.8 | 0.5 |
NOAA 1991–2020 climate normals from the nearest station: CASTLEWOOD (0.4 mi) · NOAA NCEI
Places in ZIP 57223
- 1 schools
- 1 playgrounds
- 1 post offices
- 4 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