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ZIP Code 57730 – Custer, SD

Custer, South Dakota · Custer County · Mountain time

ZIP code57730
CityCuster
StateSouth Dakota
CountyCuster CountyPennington County
Area code605
Population5,596
Time zoneMountain · local time
ZIP typeStandard (has a Census ZCTA area)
Land area516.16 sq mi
Center (lat, long)43.7266, -103.6486

Map

Nearby ZIP codes

57773 Pringle · 9.5 mi57751 Keystone · 14.8 mi57745 Hill City · 20.9 mi57702 Rapid City · 24.1 mi57738 Fairburn · 24.6 mi57747 Hot Springs · 25.2 mi57709 Rapid City · 29.2 mi57744 Hermosa · 31 mi

About ZIP 57730

ZIP code 57730 is assigned to Custer, South Dakota. It crosses 2 counties; most of its land is in Custer County. Its Census area covers about 516.16 square miles of land. The closest neighboring ZIP is 57773 (Pringle), about 9.5 miles away.

Every address in 57730 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