Spearfish, South Dakota

Spearfish population, 2020 to 2024

Spearfish added 1,578 residents from July 2020 to July 2024, a change of +12.9%. In the latest year it moved by +489. Among 18 South Dakota places of 5,000 or more, that growth ranks 4th; the median place changed by +2.7%. The median place of 5,000+ in South Dakota has 13,845 people, so Spearfish is 100% of it.

Spearfish covers 17.27 square miles of land, for 799 people per square mile of land. The median South Dakota place of 5,000+ has 1,459, so Spearfish is less dense than the typical town.

What county Spearfish is in

All of Spearfish's residents live in Lawrence County, which had 28,809 residents in 2024. Spearfish holds 47.9% of the county's population. The shaded shape is on the map above; dots mark the eight nearest places.

ZIP codes in Spearfish

2 ZIP Code Tabulation Areas (ZCTAs) overlap Spearfish by at least 10% of the ZCTA's or the city's land: 57783, 57799. ZCTAs are Census approximations of USPS ZIP code delivery areas. The list comes from the 2020 ZCTA to place relationship file, so a city that annexed land after 2020 may reach into ZIP codes not listed here.

Where Spearfish is

The Census internal point of Spearfish is at 44.491400, -103.816300. Pierre, the capital, is 171.4 miles E in a straight line. The nearest larger place is Rapid City, SD (79,894 people), 41.4 miles away. The nearest city of 100,000 or more is Billings, MT, 247.6 miles away.

Daylight in Spearfish

At 44.49° N, Spearfish gets about 15 h 33 min of daylight around the June solstice and 8 h 50 min around the December solstice, a swing of 6 h 43 min. Figures are sunrise to sunset from the SunCalc model for June 21 and December 21, 2026.

Places near Spearfish

The eight nearest incorporated places of 1,000+ in South Dakota, measured between internal points. The closest is Deadwood, 8.6 miles away, with 1,347 people.