Spearfish

County:: Lawrence County
County Seat:: No
Area (mi²):: 17.236
State:: South Dakota

Spearfish is a city located in Lawrence County, South Dakota. Spearfish has a 2025 population of 13,988. Spearfish is currently growing at a rate of 2.59% annually and its population has increased by 14.45% since the most recent census, which recorded a population of 12,222 in 2020.

The average household income in Spearfish is $86,669 with a poverty rate of 15.2%. The median age in Spearfish is 37.2 years: 35.9 years for males, and 37.9 years for females.

Demographics

The racial composition of Spearfish includes 87.82% White, 3.35% Native American, and smaller percentages for other race, Black or African American, Asian, Native Hawaiian or Pacific Islander and multiracial populations.

Population by Race

White

Two or more races

Native American

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Race	Population	Percentage (of total)
White	11,022	87.82%
Two or more races	709	5.65%
Native American	420	3.35%
Other race	223	1.78%
Black or African American	88	0.7%
Asian	67	0.53%
Native Hawaiian or Pacific Islander	22	0.18%

Spearfish Marital Status

Married

Widowed

Divorced

Separated

Never Married

Economics and Income Statistics

Spearfish's average per capita income is $43,558. Household income levels show a median of $59,731. The poverty rate stands at 15.2%.

Families: A family includes the owner or renter of the home along with everyone related to them - whether through birth, marriage, or adoption. This includes relatives like spouses, children, parents, siblings, grandparents, and any other family members.

Households: A household includes all the people who occupy a housing unit (such as a house or apartment) as their usual place of residence.

Non Families: A nonfamily household is either someone living alone or when the owner/renter lives with people they aren't related to, like roommates.

Name	Median	Mean
Married Families	$108,462	-
Families	$94,128	$124,590
Households	$59,731	$86,669
Non Families	$37,388	$54,643

$43,558

Average Income

$59,731

Median Household Income

15.2%

Poverty Rate