Spearfish, South Dakota Population 2026
Updated April 2026 · US Census ACS 2023 5-Year Estimates
The population of Spearfish, South Dakota is 12,551 as of the 2023 American Community Survey, making it the 10th-largest city in South Dakota. The median household income is $59,731, the median home value is $309,200, and the median age is 37.2.
The population has grown 31.2% since 2010 (10,523 → 13,803).
12,551
Population
727
People / sq mi
$59,731
Median Income
$309,200
Median Home Value
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Spearfish covers 17.3 sq mi of land at 727 people per square mile.
About Spearfish, SD
Spearfish stands apart on settlement density — it is among the most sparsely settled of US cities, at roughly 727 people per square mile. With 12,551 residents, Spearfish is a city in South Dakota. It is the #10-largest of all cities in South Dakota nationally.
Earnings trail the nation, with the median household making $59,731, below the US median of $78,538. The poverty rate is 7.7%, below the national 12.4%. The typical home is valued at $309,200, with typical rent around $941.
About 43.6% of adults 25 and older have a bachelor’s degree, above the 35.0% national figure. Just 5.5% of workers are home-based, below the national 14.0%, and the average commute runs about 15 minutes each way.
Spearfish city Population History (2010-2024)
The city of Spearfish city had a population of 10,523 in 2010 and 13,803 in 2024, a 31.2% growth over 14 years. The peak was 13,803 in 2024. Average annual growth rate: 1.97%.
13,803
Population (2024)
10,523
Population (2010)
13,803
Peak (2024)
1.97%
Avg Annual Growth
| Year | Population |
|---|---|
| 2010 | 10,523 |
| 2011 | 10,617 |
| 2012 | 10,679 |
| 2013 | 11,024 |
| 2014 | 11,031 |
| 2015 | 11,181 |
| 2016 | 11,438 |
| 2017 | 11,646 |
| 2018 | 11,667 |
| 2019 | 11,756 |
| 2020 | 12,225 |
| 2021 | 12,369 |
| 2022 | 12,926 |
| 2023 | 13,314 |
| 2024 | 13,803 |
Race & Ethnicity
| White | 87.8% |
| Black or African American | 0.7% |
| Asian | 0.0% |
| Hispanic or Latino (any race) | 5.3% |
| Two or More Races | 0.2% |
Economy & Income
$59,731
Median Household Income
$43,516
Per Capita Income
7.7%
Poverty Rate
1.6%
Unemployment Rate
Housing
$309,200
Median Home Value
$941
Median Rent
48.3%
Owner-Occupied
Education
95.9%
High School+
43.6%
Bachelor's+
Commute
1.4%
Drive Alone
80.6%
Public Transit
5.5%
Work From Home
14.8 min
Avg Commute
Community Profile
42.7%
Foreign Born
96.0%
Non-English at Home
10.5%
Veterans
17.7%
With Disability
90.7%
Health Insurance
94.3%
Internet Access
Employment by Industry
| Professional, Scientific & Management | 25.7% |
| Education, Health Care & Social Services | 21.9% |
| Finance, Insurance & Real Estate | 6.7% |
| Agriculture & Mining | 5.9% |
| Arts, Entertainment & Food Services | 5.7% |
| Manufacturing | 5.1% |
| Information | 4.5% |
| Construction | 3.2% |
| Retail Trade | 2.5% |
| Public Administration | 2.4% |
| Transportation & Warehousing | 1.8% |
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City rankings
Frequently Asked Questions
Spearfish, South Dakota has a population of 12,551 according to the US Census Bureau's 2023 American Community Survey 5-year estimates, making it the 10th-largest city in South Dakota.
The median household income in Spearfish, South Dakota is $59,731, with 7.7% of residents living below the federal poverty level.
The median home value in Spearfish, South Dakota is $309,200, with median monthly rent at $941 and a homeownership rate of 48.3%.
The median age in Spearfish, South Dakota is 37.2 years. The population is 48.5% male and 51.5% female.
The population has grown 31.2% since 2010 (10,523 → 13,803).
Where to stay in Spearfish
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Data from the American Community Survey (ACS) 5-Year estimates.
Source: U.S. Census Bureau ACS, 2026.