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ZIP Code 57278 – Willow Lake, SD

Willow Lake, South Dakota · Clark County · Central time

ZIP code57278
CityWillow Lake
StateSouth Dakota
CountyClark County
Area code605
Population1,011
Time zoneCentral · local time
ZIP typeStandard (has a Census ZCTA area)
Land area157.59 sq mi
Center (lat, long)44.6488, -97.6812

Map

Nearby ZIP codes

57271 Vienna · 10.3 mi57221 Bryant · 12.1 mi57322 Carpenter · 13.8 mi57225 Clark · 16.4 mi57233 Erwin · 16.8 mi57242 Hazel · 18.1 mi57386 Yale · 18.3 mi57231 De Smet · 19.5 mi

About ZIP 57278

ZIP code 57278 is assigned to Willow Lake, South Dakota. It lies in Clark County. Its Census area covers about 157.59 square miles of land. The closest neighboring ZIP is 57271 (Vienna), about 10.3 miles away.

Every address in 57278 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