Spearfish, South Dakota Population 2020

11,688

Spearfish, South Dakota's estimated population is 11,688 according to the most recent United States census estimates. Spearfish, South Dakota is the 10th largest city in South Dakota based on official 2017 estimates from the US Census Bureau.

The population density is 710.13 people/mi² (274.18 people/km²).

The overall median age is 35.8 years, 35 years for males, and 37.9 years for females. For every 100 females there are 91.9 males.

The median income for households in Spearfish, South Dakota is $, while the mean household income is $.

Spearfish Sd Demographics

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

  • White: 94.00%
  • Native American: 2.51%
  • Two or more races: 1.55%
  • Asian: 1.22%
  • Black or African American: 0.60%
  • Native Hawaiian or Pacific Islander: 0.12%
  • Other race: 0.00%

How Many People Live in Spearfish, South Dakota?

11,688
Year Population Growth Annual Growth Rate
201811,688580.50%
201711,6301981.73%
201611,4322362.11%
201511,1961521.38%
201411,044110.10%
201311,0333453.23%
201210,688620.58%
201110,626930.88%
201010,5331,9272.04%
20008,6061,6402.14%
19906,9661,7152.87%
19805,2515901.20%
19704,6619792.39%
19603,6829292.95%
19502,7530.00%

Population by Race

Race Population Percentage
White10,70994.00%
American Indian and Alaska Native2862.51%
Two or More Races1771.55%
Asian1391.22%
Black or African American680.60%
Native Hawaiian and Other Pacific Islander140.12%

Spearfish Sd Population Pyramid 2020

Spearfish Sd Median Age

35.8


Total

35


Male

37.9


Female

Spearfish Sd Adults

There are 9,393 adults, (2,215 of whom are seniors) in Spearfish Sd.

Spearfish Sd Age Dependency

58.7

Age Dependency Ratio

30.9

Old Age Dependency Ratio

27.9

Child Dependency Ratio

Spearfish Sd Sex Ratio

Female

5,937

52.11%

Male

5,456

47.89%

Spearfish Sd Households and Families

Spearfish Sd Renter vs Owner Occupied by Household Type

Spearfish Sd Household Types

Type Owner Renter
Married78.3%21.7%
All53.9%46.1%
Female48.8%51.2%
Male48.4%51.6%
Non Family34.8%65.2%

53.9%

Rate of Home Ownership

Type Count Average Size Owned
All4,9472.1253.9
Non Family2,4231.3534.8
Married2,0132.878.3
Female3833.2248.8
Male1282.748.4

2.77

Average Family Size

2.12

Average Household Size

7.9%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Spearfish Sd Education

Education Attained Count Percentage
Less Than 9th Grade1441.96%
9th to 12th Grade1902.58%
High School Graduate2,04027.72%
Some College1,53820.90%
Associates Degree6508.83%
Bachelors Degree1,84725.10%
Graduate Degree94912.90%

Spearfish Sd Educational Attainment by Race

Name Total High School Bachelors
White7,0346,7192,619
Hispanic12912966
Asian818162
Native American686813
Multiple Races626251
Black19

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 multiple races people with a rate of 82.26%.

Name Average Male Female
Overall$33,720$42,863$28,401
Less Than High School$$$28,750
High School Grad$30,266$39,750$21,449
Some College$34,464$45,074$25,665
Bachelors Degree$31,486$36,786$29,940
Graduate Degree$52,364$50,968$61,375

$33,720

Average Earnings

$42,863

Average Male

$28,401

Average Female

Spearfish Sd Language

Spearfish Sd Language by Age

Spearfish Sd Language

97.30% of Spearfish Sd residents speak only English, while 2.70% 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 Sd Poverty

Spearfish Sd Poverty by Race

Name Total In Poverty Poverty Rate
White9,7971,15411.78%
Native2257432.89%
Multiple1495838.93%
Hispanic2443915.98%
Asian982222.45%
Black461021.74%

12.78%

Overall Poverty Rate

11.11%

Male Poverty Rate

14.40%

Female Poverty Rate

Poverty in Spearfish Sd

The race most likely to be in poverty in Spearfish Sd is Multiple, with 38.93% below the poverty level.

The race least likely to be in poverty in Spearfish Sd is White, with 11.78% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.55%. Among those working part-time, it was 26.27%, and for those that did not work, the poverty rate was 15.22%.

Name Poverty
Some College9.32%
High School8.09%
Less Than High School6.95%
Bachelors or Greater6.14%
Name Poverty
Female Unemployed40.63%
Female Employed11.76%
Male Employed5.30%
Male Unemployed0.00%

Spearfish Sd Income

Spearfish Sd Income by Household Type

Name Median Mean
Households$47,466$71,253
Families$76,437$99,484
Married Families$82,566-
Non Families$26,991$39,236

Spearfish Sd Marital Status

Spearfish Sd Marital Status

Marriage Rates

42.9%

Overall Marriage Rate

45.2%

Male Marriage Rate

40.9%

Female Marriage Rate

Spearfish Sd Married by Age and Sex

Spearfish Sd 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 Sd Marital Status by Race

Spearfish Sd Veterans

846

Number of Veterans

766

Male Veterans

80

Female Veterans

War Veterans
Vietnam303
First Gulf War168
Korea167
Second Gulf War65
World War II23

Spearfish Sd Veterans by Race

Name Veterans % of Total
White8279.44%
Hispanic2511.79%
Asian1913.67%

Spearfish Sd Veterans by Education

7.66%

Veteran Poverty Rate

42.40%

Veteran Disability Rate

Spearfish Sd Employment Status

64.9%

Labor Force Participation

63.1%

Employment Rate

1.8%

Unemployment Rate

Spearfish Sd Place of Birth

Origin of Non Citizens

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

Origin of Naturalized Citizens

54.45%

Born in South Dakota

97.35%

Native Born

2.65%

Foreign Born

1.72%

Non Citizen

Place of Birth

97.35% of Spearfish Sd residents were born in the United States, with 54.45% having been born in South Dakota. 1.72% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Asia.