ZIP Code 57799
About Spearfish
Spearfish is a city in Lawrence County, South Dakota, United States. The population was 12,193 at the 2020 census, and was estimated to be 13,803 in 2024, making it the 10th most populous city in South Dakota. Spearfish is the largest city in Lawrence County and the home of Black Hills State University.
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Area Profile
US Census (ACS 5-year · Gazetteer)
578
population
3,074
people / sq mi
19.6
median age
0
housing units
0
households
0.2
land area (sq mi)