Spearfish, South Dakota Population 2021

11,934
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Spearfish is a city located in Lawrence County South Dakota. With a 2020 population of 11,934, it is the 10th largest city in South Dakota and the 2733rd largest city in the United States . Spearfish is currently growing at a rate of 0.75% annually and its population has increased by 13.72% since the most recent census, which recorded a population of 10,494 in 2010. Spearfish reached it's highest population of 11,934 in 2021. Spanning over 16 miles, Spearfish has a population density of 725 people per square mile.

The average household income in Spearfish is $73,951 with a poverty rate of 13.83%. The median rental costs in recent years comes to $763 per month, and the median house value is $212,700. The median age in Spearfish is 36.1 years, 34.6 years for males, and 37.9 years for females.

Spearfish Demographics

According to the most recent ACS, the racial composition of Spearfish was:

  • White: 93.30%
  • Two or more races: 2.47%
  • Native American: 2.22%
  • Asian: 1.16%
  • Black or African American: 0.77%
  • Native Hawaiian or Pacific Islander: 0.09%
  • Other race: 0.00%
The current population of Spearfish, South Dakota is 11,934 based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 11,667.The last official US Census in 2010 recorded the population at 10,494.

Spearfish, South Dakota Population 2021

2019 and 2020 population is estimated by projecting the raw 2018 numbers.

Year Population Growth Growth Rate
202126,0781170.45%
202025,9611170.45%
201925,8441170.45%
201825,727500.19%
201725,6773601.40%
201625,3174901.94%
201524,827950.38%
201424,732-207-0.84%
201324,9395372.15%
201224,402730.30%
201124,3291240.51%
201024,2050.00%

Spearfish Metro Area Population by Year

Population by Race

Race Population Percentage
White10,77393.30%
Two or More Races2852.47%
American Indian and Alaska Native2562.22%
Asian1341.16%
Black or African American890.77%
Native Hawaiian and Other Pacific Islander100.09%
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Spearfish Population by Race

Spearfish Population Pyramid $2021

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Spearfish Median Age

36.1


Total

34.6


Male

37.9


Female

Spearfish Adults

There are 9,514 adults, (2,380 of whom are seniors) in Spearfish.

Spearfish Age Dependency

61.9

Age Dependency Ratio

33.4

Old Age Dependency Ratio

28.5

Child Dependency Ratio

Spearfish Sex Ratio

Female

6,162

53.36%

Male

5,385

46.64%

Spearfish Population by Age

Spearfish Renter vs Owner Occupied by Household Type

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Spearfish Household Types

Type Owner Renter
Married80.3%19.7%
Female52.9%47.1%
All52.8%47.2%
Male48.4%51.6%
Non Family31.7%68.3%

52.8%

Rate of Home Ownership

Spearfish Households and Families

Type Count Average Size Owned
All5,0112.1252.8
Non Family2,4861.3531.7
Married1,9432.8380.3
Female4253.2152.9
Male1572.6448.4

2.75

Average Family Size

2.12

Average Household Size

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Spearfish Households by Type

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Education Attained Count Percentage
Less Than 9th Grade1431.92%
9th to 12th Grade1622.18%
High School Graduate1,81024.32%
Some College1,60921.62%
Associates Degree6358.53%
Bachelors Degree2,04727.51%
Graduate Degree1,03613.92%
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Spearfish Educational Attainment by Sex (over 25)

Spearfish Educational Attainment by Race

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Race Total High School Bachelors
White7,0506,7602,873
Hispanic14314369
Asian102102102
Native American89898
2+ Races898951
Black161

The highest rate of high school graduation is among native american people with a rate of 100.00%.

The highest rate of bachelors degrees is among asian people with a rate of 100.00%.

Spearfish Educational Attainment by Race

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Name Average Male Female
Overall$34,154$42,326$30,168
Less Than 9th Grade$$$
High School Graduate$27,200$41,200$20,934
Some College$34,167$42,585$26,406
Bachelors Degree$31,739$32,479$31,375
Graduate Degree$60,000$57,697$61,989

$34,154

Average Earnings

$42,326

Average Male

$30,168

Average Female

Spearfish Earnings by Educational Attainment

Spearfish Language by Age

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Spearfish Language

97.23% of Spearfish residents speak only English, while 2.77% speak other languages. The non-English language spoken by the largest group is Asian and Pacific Island languages, which is spoken by 0.99% of the population.

Spearfish Language

Spearfish Poverty by Race

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Name Total In Poverty Poverty Rate
White9,7751,17011.97%
Multiple26214856.49%
Native1947136.60%
Hispanic2555822.75%
Black501020.00%
Asian10176.93%

13.83%

Overall Poverty Rate

11.46%

Male Poverty Rate

16.01%

Female Poverty Rate

Poverty in Spearfish

The race most likely to be in poverty in Spearfish is Multiple, with 56.49% below the poverty level.

The race least likely to be in poverty in Spearfish is Asian, with 6.93% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.71%. Among those working part-time, it was 28.69%, and for those that did not work, the poverty rate was 14.93%.

Spearfish Poverty

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Name Poverty
Some College9.67%
High School9.43%
Less Than 9th Grade6.44%
Bachelors or Greater5.73%

Spearfish Poverty Rate by Education

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Rate Poverty
Female Unemployed28.57%
Female Employed15.24%
Male Employed4.70%
Male Unemployed0.00%

Spearfish Poverty Rate by Employment Status and Sex

Spearfish Income by Household Type

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Name Median Mean
Households$46,193$73,951
Families$78,170$105,744
Married Families$86,103-
Non Families$25,764$38,759
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Income by Household Type

Spearfish Marital Status

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Marriage Rates

41.4%

Overall Marriage Rate

44.2%

Male Marriage Rate

39.0%

Female Marriage Rate

Spearfish Married by Age and Sex

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Spearfish Marriage

The age group where males are most likely to be married is Over 65, while the female age group most likely to be married is 45-54.

Spearfish Marital Status by Race

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Spearfish Marital Status

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879

Number of Veterans

806

Male Veterans

73

Female Veterans

War Veterans
Vietnam319
First Gulf War174
Korea154
Second Gulf War78
World War II12

Spearfish Veterans by War

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Age Group Veterans
75+369
65 to 74205
35 to 54154
55 to 64131
18 to 3420

Spearfish Veterans by Age

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Name Veterans % of Total
White8799.96%
Hispanic209.17%

Spearfish Veterans by Race

Spearfish Veterans by Education

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6.68%

Veteran Poverty Rate

45.16%

Veteran Disability Rate

Spearfish Veterans by Education

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64.1%

Labor Force Participation

62.5%

Employment Rate

1.5%

Unemployment Rate

Spearfish Employment by Age

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Spearfish Employment by Race

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Spearfish Employment by Education

Origin of Non-Citizens

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Non citizens include legal permanent residents (green card holders), international students, temporary workers, humanitarian migrants, and illegal immigrants.

Origin of Naturalized Citizens

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53.54%

Born in Spearfish

97.58%

Native Born

2.42%

Foreign Born

1.62%

Non Citizen

0.81%

Naturalized

Place of Birth

97.58% of Spearfish residents were born in the United States, with 53.54% having been born in South Dakota. 1.62% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.

Spearfish Place of Birth

Year Population Growth Annual Growth Rate
202111,934890.75%
202011,845890.76%
201911,756890.76%
201811,667210.18%
201711,6462081.82%
201611,4382572.30%
201511,1811501.36%
201411,03170.06%
201311,0243453.23%
201210,679620.58%
201110,617940.89%
201010,5231,9172.03%
20008,6061,6402.14%
19906,9661,7152.87%
19805,2515901.20%
19704,6619792.39%
19603,6829292.95%
19502,7530.00%

Spearfish Population by Year