Watertown Development Company

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City Information & Data

Elevation: 1,739 feet
Land Area: 15.2 sq. miles/ 1,411 people per square mile
Average Commute: 10-15 minutes
Population 21,482 (2010 U.S. Census)


Watertown is the county seat and population center of Codington County. Home to over 21,000 people, Watertown is a vibrant, progressive community that is poised for explosive growth.

According to the 2010 U.S. Census Bureau, the population in Watertown grew 6.2% in the first decade of the 21st century and we expect that growth to continue in the coming decade.


Median Household Income:  $42,449
Median Family Income:          $60,011
Source: U.S. Census Bureau, 2010 Census.
Watertown’s population is 49.2% male and 50.8% female. The median age of a Watertown resident is 36.6 years old. The median age of the state’s population is 40.7 years old. Over 84% have a high school education and of that, 20% have a bachelors or higher degree. The cost of living index is lower than the national average.   

Population and Housing Census Data for the State of South Dakota and Counties and Places can be viewed below:
1970 Access 1970 information
1980 Access 1980 information
1990 Access 1990 information 
2000 Access 2000 information
2010 Access 2010 information

Median Existing Home Price: Midwest

2009 $142,900
2010 $140,800
2011 $135,800

New Infrastructure

The city of Watertown has invested $43.6 million dollars in infrastructure improvements over the last three years to prepare for future growth. This work included the construction of five new projects including a water treatment plant, lift station, lime lagoons, wells and a booster station totaling $23.7 million. An additional $15 million was spent on the waste water treatment facility, the construction of roads, water and sewer in industrial parks and enhancement to public facilities including a new aquatic park and library. These improvements have helped enhance the quality of life for area residents and the workforce, while still maintaining the state's lowest property tax rates and bounded indebtedness for a Class A city.

South Dakota National Rankings

See more at rankings by clicking here.
#1 Small Business Survival Index
#1 State Business Tax  Climate Index
#1 Bank Assets
#3 Best Credit Ranking
#3 Business Friendliness


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Get in Touch

1 East Kemp Avenue

PO Box 332

Watertown, SD 57201

Phone: (605) 884-0340

Toll Free: 1-888-898-6767

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