Find the last 4 digits (ZIP+4) for an address in 57223

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ZIP Code 57223 – Castlewood, SD

Castlewood, South Dakota · Hamlin County · Central time

ZIP code57223
CityCastlewood
StateSouth Dakota
CountyHamlin CountyDeuel County
Area code605
Population1,429
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area124.63 sq mi
Center (lat, long)44.7123, -96.9944

Map

Nearby ZIP codes

57234 Estelline · 8.6 mi57241 Hayti · 10.9 mi57238 Goodwin · 12.9 mi57248 Lake Norden · 13 mi57245 Kranzburg · 13.1 mi57226 Clear Lake · 13.9 mi57201 Watertown · 16.2 mi57220 Bruce · 17.8 mi

About ZIP 57223

ZIP code 57223 is assigned to Castlewood, South Dakota. It crosses 2 counties; most of its land is in Hamlin County. Its Census area covers about 124.63 square miles of land. The closest neighboring ZIP is 57234 (Estelline), about 8.6 miles away.

Every address in 57223 also has a 4-digit add-on code (ZIP+4) that points to a smaller delivery area. Use the box above to find it.

Sources: US Census Bureau (ZCTA, county relationship files), GeoNames (CC BY 4.0), NANPA via NumberResearch.org (CC BY 4.0). Map © OpenStreetMap contributors. ZIP areas are approximate. Population: U.S. Census Bureau, ACS 5-year estimates, 2024 (ZCTA). Data sources