Spearfish, SD Micropolitan Statistical Area SD Demographic Data and Boundary Map


Spearfish, SD Micropolitan Statistical Area Boundary Map

Spearfish, SD Micropolitan Statistical Area Data & Demographics (As of July 1, 2016)


Total Population 25,769
Population in Households 24,698
Population in Familes 18,176
Population in Group Qrtrs 1,071
Population Density1 32
Diversity Index2 19


Total Households 11,144
Average Household Size 2.22
Family Households 6,440
Average Family Size 3


Total Housing Units 13,831 (100%)
Owner Occupied HU 7,000 (50.6%)
Renter Occupied HU 4,144 (30.0%)
Vacant Housing Units 2,687 (19.4%)
Median Home Value $205,826
Average Home Value $244,196


Median Household Income $48,481
Average Household Income $64,585
Per Capita Income $28,155
  (Compound Annual Growth Rates)


2010-2015 2015-2020
Population 1.08% 0.95%
Households 0.9% 0.84%
Families 0.66% 0.68%
Median Household Income   2.81%
Per Capita Income   2.14%
1) Population Density = Total Population per square mile.
2) The Diversity Index is a scale of 0 to 100 that represents the likelyhood that two persons, chosen at random from the same area, belong to different race or ethnic groups. If an area's entire population belongs to one race AND one ethnic group, then the area has zero diversity. An area's diversity index increases to 100 when the population is evenly divided into two or more race/ethnic groups.
Based on Census 2010 counts, the Diversity Index for the United States was 60.6 and it is expected to increase to 64.8 by July 1, 2018.