Watertown, South Dakota Population 2024

23,501

Watertown is a city located in Codington County South Dakota. Watertown has a 2024 population of 23,501. It is also the county seat of Codington County.Watertown is currently growing at a rate of 1.04% annually and its population has increased by 3.64% since the most recent census, which recorded a population of 22,675 in 2020.

The average household income in Watertown is $79,231 with a poverty rate of 12.26%. The median rental costs in recent years comes to - per month, and the median house value is -. The median age in Watertown is 38.9 years, 38.6 years for males, and 39.4 years for females.

Watertown Demographics

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

  • White: 91.24%
  • Two or more races: 3.76%
  • Native American: 2.7%
  • Other race: 0.93%
  • Black or African American: 0.74%
  • Asian: 0.62%
  • Native Hawaiian or Pacific Islander:
Land Area (mi²)
18.1 sq mi
Density (mi²)
1,297.0/sq mi
Growth Since 2020
3.64% (826)
The current population of Watertown, South Dakota is 23,501 based on our projections of the latest US Census estimates.The last official US Census in 2020 recorded the population at 22,675.

Watertown, South Dakota Population 2024

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Watertown Metro Area Population by Year

Population by Race

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Race
Population
Percentage (of total)
White20,72891.24%
Two or more races8553.76%
Native American6142.7%
Other race2110.93%
Black or African American1690.74%
Asian1410.62%
Native Hawaiian or Pacific Islander
showing: 7 rows

White

Two or more races

Native American

Other race

Black or African American

Asian

Native Hawaiian or Pacific Islander

Watertown Population by Race

Watertown Population Pyramid 2024

Watertown Median Age

38.9

Total

38.6

Male

39.4

Female

Watertown Adults

There are 17,580 adults, (4,294 of whom are seniors) in Watertown.

Watertown Age Dependency

71

Age Dependency Ratio

32.3

Old Age Dependency Ratio

38.7

Child Dependency Ratio

Watertown Sex Ratio

Female11,25149.52%
Male11,46750.48%

Watertown Population by Age

Watertown Renter vs Owner Occupied by Household Type

Household Type
Count
Average Size
Owner
Renter
All10,0182.2162.437.6
Non Family4,5211.2945.554.5
Married4,3902.9683.316.7
Female6973.145.654.4
Male4102.7654.445.6
showing: 5 rows

2.89

Average Family Size

2.21

Average Household Size

62.4%

Rate of Home Ownership

Married

Male

Female

NonFamily

owner

renter

Watertown Households and Families

Male

Female

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Less Than 9th Grade

9th to 12th Grade

High School Graduate

Some College

Associates Degree

Bachelors Degree

Graduate Degree

Watertown Educational Attainment by Sex (over 25)

Watertown Educational Attainment by Race

High School Graduation Rate

Bachelors Rate

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The highest rate of high school graduation is among asian people with a rate of 100%.

The highest rate of bachelors degrees is among 2+ races people with a rate of 32.81%.

Watertown Educational Attainment by Race

All

Male

Female

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$43,514

Average Earnings

$54,008

Average Male

$34,586

Average Female

Watertown Earnings by Educational Attainment

Watertown Language by Age

Only English

Spanish

Other Indo-European Languages

Asian and Pacific Island Languages

Other Languages

Watertown Language

97.18% of Watertown residents speak only English, while 2.82% speak other languages. The non-English language spoken by the largest group is Other Indo-European, which is spoken by 1.13% of the population.

Watertown Language

Watertown Poverty by Race

rate

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Name
Total
In Poverty
Poverty Rate
White19,9641,9089.56%
Hispanic84045754.4%
Native57229551.57%
Multiple84720624.32%
Other2119946.92%
Asian1414834.04%
Black1691710.06%
showing: 7 rows

12.26%

Overall Poverty Rate

9.38%

Male Poverty Rate

15.23%

Female Poverty Rate

Poverty in Watertown

The race most likely to be in poverty in Watertown is Hispanic, with 54.4% below the poverty level.

The race least likely to be in poverty in Watertown is White, with 9.56% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 3.96%. Among those working part-time, it was 20.71%, and for those that did not work, the poverty rate was 16.32%.

Watertown Poverty

rate

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Rate
Poverty
Less Than 9th Grade20.78%
Some College9.94%
High School9.75%
Bachelors or Greater2.25%
showing: 4 rows

Watertown Poverty Rate by Education

rate

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Rate
Poverty
Male Unemployed62.96%
Female Unemployed14.02%
Female Employed11.25%
Male Employed6.82%
showing: 4 rows

Watertown Poverty Rate by Employment Status and Sex

Watertown Income by Household Type

Households

Families

MarriedFamilies

NonFamilies

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mean

median

Income by Household Type

Watertown Marital Status

Married

Widowed

Divorced

Separated

NeverMarried

Marriage Rates

49.1%

Overall Marriage Rate

47.9%

Male Marriage Rate

50.4%

Female Marriage Rate

Watertown Married by Age and Sex

male

female

Watertown Marriage

The age group where males are most likely to be married is 45-54, while the female age group most likely to be married is 35-44.

Watertown Marital Status by Race

Married

Widowed

Divorced

Separated

NeverMarried

Watertown Marital Status

Second Gulf War

First Gulf War

Vietnam

Korea

World War II

1,680

Number of Veterans

1,615

Male Veterans

65

Female Veterans

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Watertown Veterans by War

count

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Watertown Veterans by Age

count

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Watertown Veterans by Race

Watertown Veterans by Education

Less Than 9th Grade

High School Graduate

Some College

Bachelors or Greater

1.81%

Veteran Poverty Rate

24.21%

Veteran Disability Rate

Watertown Veterans by Education

LaborForceParticipation

68%

Labor Force Participation

66.9%

Employment Rate

1.5%

Unemployment Rate

Watertown Employment by Age

LaborForceParticipation

Watertown Employment by Race

LaborForceParticipation

Watertown Employment by Education

Origin of Non-Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

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

Origin of Naturalized Citizens

Europe

Asia

Africa

Oceania

Latin America

North America

68.52%

Born in Watertown

97.88%

Native Born

2.12%

Foreign Born

1.79%

Non Citizen

0.33%

Naturalized

Place of Birth

97.88% of Watertown residents were born in the United States, with 68.52% having been born in South Dakota. 1.79% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Watertown Place of Birth

Note: data after 2022 is projected based on recent change

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Year
Population
Growth
Growth Rate
202924,7062410.99%
202824,4652410.99%
202724,2242411%
202623,9832411.02%
202523,7422411.03%
202423,5012411.04%
202323,2602411.05%
202223,0192411.06%
202122,7781030.45%
202022,6754351.96%
201922,240100.04%
201822,230-90-0.4%
201722,3201450.65%
201622,1751190.54%
201522,056-25-0.11%
201422,081760.35%
201322,0051670.76%
201221,8381630.75%
201121,6751550.72%
201021,5201,2836.34%
200020,2372,64515.04%
199017,5921,94312.42%
198015,6492,26116.89%
197013,388-689-4.89%
196014,0771,37810.85%
195012,6992,08219.61%
194010,6174033.95%
193010,2148148.66%
19209,4002,39034.09%
19107,0103,658109.13%
19003,35268025.45%
18902,672
showing: 32 rows

Watertown Population by Year