Watertown, South Dakota Population 2020

22,285

Watertown is a city located in Codington County, South Dakota. With a 2020 population of 22,285, it is the 5th largest city in South Dakota (after Sioux Falls, Rapid City, Aberdeen, and Brookings) and the 1692nd largest city in the United States. Watertown is currently growing at a rate of 0.30% annually and its population has increased by 3.74% since the most recent census, which recorded a population of 21,482 in 2010. Spanning over 26 miles, Watertown has a population density of 1,230 people per square mile.

The average household income in Watertown is $66,722 with a poverty rate of 14.02%. The median rental costs in recent years comes to $743 per month, and the median house value is $162,600. The median age in Watertown is 37.1 years, 36.3 years for males, and 38.6 years for females. For every 100 females there are 95.6 males.

Watertown Sd Demographics

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

  • White: 94.25%
  • Native American: 2.46%
  • Two or more races: 1.98%
  • Black or African American: 0.76%
  • Asian: 0.49%
  • Native Hawaiian or Pacific Islander: 0.05%
  • Other race: 0.00%
The current population of Watertown, South Dakota is 22,285, based on our projections of the latest US Census estimates. The US Census estimates the 2018 population at 22,153. The last official US Census in 2010 recorded the population at 21,482.

Population by Race

Race Population Percentage
White20,85194.25%
American Indian and Alaska Native5442.46%
Two or More Races4391.98%
Black or African American1680.76%
Asian1090.49%
Native Hawaiian and Other Pacific Islander120.05%
Some Other Race10.00%

Watertown Sd Population Pyramid 2020

Watertown Sd Median Age

37.1


Total

36.3


Male

38.6


Female

Watertown Sd Adults

There are 16,784 adults, (3,707 of whom are seniors) in Watertown Sd.

Watertown Sd Age Dependency

69.2

Age Dependency Ratio

28.3

Old Age Dependency Ratio

40.8

Child Dependency Ratio

Watertown Sd Sex Ratio

Female

11,312

51.13%

Male

10,812

48.87%

Watertown Sd Households and Families

Watertown Sd Renter vs Owner Occupied by Household Type

Watertown Sd Household Types

Type Owner Renter
Married86.8%13.2%
All61%39%
Female43.1%56.9%
Non Family38.2%61.8%
Male35.6%64.4%

61.0%

Rate of Home Ownership

Type Count Average Size Owned
All9,5452.2661
Married4,3882.9686.8
Non Family3,9921.2838.2
Female1,0022.9543.1
Male1632.935.6

2.9

Average Family Size

2.26

Average Household Size

5.6%

Unmarried (Opposite Sex)

0%

Unmarried (Same Sex)

Watertown Sd Education

Education Attained Count Percentage
Less Than 9th Grade5103.44%
9th to 12th Grade7394.99%
High School Graduate5,20235.12%
Some College3,09420.89%
Associates Degree2,03013.71%
Bachelors Degree2,55217.23%
Graduate Degree6854.62%

Watertown Sd Educational Attainment by Race

Name Total High School Bachelors
White13,87712,8793,080
Hispanic28514422
Multiple Races21816324
Native American20515015
Black16416450
Asian10910946
Other Race111

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

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

Name Average Male Female
Overall$32,971$43,025$26,242
Less Than High School$27,500$33,583$22,939
High School Grad$30,323$32,407$22,139
Some College$33,517$44,178$26,161
Bachelors Degree$41,683$74,643$36,127
Graduate Degree$53,750$61,012$39,676

$32,971

Average Earnings

$43,025

Average Male

$26,242

Average Female

Watertown Sd Language

Watertown Sd Language by Age

Watertown Sd Language

98.01% of Watertown Sd residents speak only English, while 1.99% speak other languages. The non-English language spoken by the largest group is Spanish, which is spoken by 0.86% of the population.

Watertown Sd Poverty

Watertown Sd Poverty by Race

Name Total In Poverty Poverty Rate
White20,1162,55012.68%
Native51133264.97%
Hispanic56115427.45%
Asian1094137.61%
Multiple412235.58%
Black164127.32%

14.02%

Overall Poverty Rate

11.39%

Male Poverty Rate

16.53%

Female Poverty Rate

Poverty in Watertown Sd

The race most likely to be in poverty in Watertown Sd is Native, with 64.97% below the poverty level.

The race least likely to be in poverty in Watertown Sd is Multiple, with 5.58% below the poverty level.

The poverty rate among those that worked full-time for the past 12 months was 2.65%. Among those working part-time, it was 22.03%, and for those that did not work, the poverty rate was 24.47%.

Name Poverty
Less Than High School25.39%
High School11.90%
Some College8.88%
Bachelors or Greater3.42%
Name Poverty
Female Unemployed31.58%
Male Unemployed21.90%
Female Employed10.08%
Male Employed5.57%

Watertown Sd Income

Watertown Sd Income by Household Type

Name Median Mean
Households$49,870$66,722
Families$72,881$83,692
Married Families$80,400-
Non Families$30,526$41,391

Watertown Sd Marital Status

Watertown Sd Marital Status

Marriage Rates

51.9%

Overall Marriage Rate

54.5%

Male Marriage Rate

49.5%

Female Marriage Rate

Watertown Sd Married by Age and Sex

Watertown Sd Marriage

The age group where males are most likely to be married is 55-64, while the female age group most likely to be married is 55-64.

Watertown Sd Marital Status by Race

Watertown Sd Veterans

1,821

Number of Veterans

1,721

Male Veterans

100

Female Veterans

War Veterans
Vietnam597
Second Gulf War364
First Gulf War320
Korea150
World War II59

$Watertown Sd Veterans by Education

7.04%

Veteran Poverty Rate

25.17%

Veteran Disability Rate

Watertown Sd Employment Status

70.4%

Labor Force Participation

68.3%

Employment Rate

2.9%

Unemployment Rate

Watertown 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

72.65%

Born in South Dakota

98.37%

Native Born

1.63%

Foreign Born

0.89%

Non Citizen

Place of Birth

98.37% of Watertown Sd residents were born in the United States, with 72.65% having been born in South Dakota. 0.89% of residents are not US citizens. Of those not born in the United States, the largest percentage are from Latin America.

Year Population Growth Annual Growth Rate
202022,285660.30%
201922,219660.30%
201822,153-48-0.22%
201722,201660.30%
201622,1351070.49%
201522,028-37-0.17%
201422,065690.31%
201321,9961680.77%
201221,8281570.72%
201121,6711500.70%
201021,5211,2840.62%
200020,2372,6451.41%
199017,5921,9431.18%
198015,6492,2611.57%
197013,388-689-0.50%
196014,0771,3781.04%
195012,6992,0821.81%
194010,6174030.39%
193010,2148140.83%
19209,4002,3902.98%
19107,0103,6587.66%
19003,3526802.29%
18902,6720.00%