Nestled in the heart of eastern South Dakota, Kingsbury County is known for its rich agricultural heritage, welcoming communities, beautiful prairie landscapes, and strong sense of community. Established in 1880, the county has a proud history of serving its residents while preserving the traditions that have shaped the area for generations.
Today, Kingsbury County continues to provide quality public services while embracing opportunities for growth and development. Whether you're a lifelong resident, a new neighbor, or a visitor exploring the area, we invite you to learn more about our county's history, communities, and natural beauty.
County History
Kingsbury County was officially established on February 2, 1880, and De Smet was selected as the county seat on November 2, 1880. The county was named in honor of brothers George W. Kingsbury and Thomas A. (T.A.) Kingsbury, descendants of the colonial English Kingsbury family of Boston, Massachusetts. Both men played significant roles in the development of Dakota Territory, serving in several Territorial Legislatures and contributing to the region's early government.
According to the 2010 U.S. Census, Kingsbury County had a population of 5,148 residents.
The Historic Courthouse
The Kingsbury County Courthouse stands as one of the county's most recognizable landmarks. Construction of the original east wing began in 1898 with a budget not to exceed $4,000. Prior to its completion, many county offices operated from various buildings throughout De Smet.
In January 1898, contractor M. E. Bush was awarded the contract to construct the courthouse's west wing for $14,800. Additional improvements included the use of Springfield brick for the interior, raising the roofline of the east wing to match the west wing, landscaped grounds with trees and flowers, and curved walkways surrounding the courthouse.
Construction was completed in January 1899, and by January 17, county officials had moved into the new courthouse, where it quickly became the center of county government—a role it continues to serve today.
Communities
Kingsbury County is home to a variety of communities, each contributing to the county's unique character and heritage.
Cities
- Arlington
- De Smet (County Seat)
- Iroquois
- Lake Preston
Towns
- Badger
- Bancroft
- Erwin
- Hetland
- Oldham
Unincorporated Communities
- Esmond
- Osceola
Historic Community
- Manchester (Ghost Town)
Lake Thompson
Kingsbury County is home to Lake Thompson, one of South Dakota's largest natural lakes. Covering approximately 16,236 acres, the lake features nearly 45 miles of shoreline and reaches a maximum depth of approximately 26 feet.
Lake Thompson is a popular destination for fishing, boating, camping, wildlife viewing, and other outdoor recreation. Its scenic shoreline and abundant wildlife make it one of the county's most treasured natural resources, attracting visitors from across the region throughout the year.
