Dewey County is located in the central part of South Dakota, covering an area of approximately 1,900 square miles. Established in 1911, it was named after Admiral George Dewey, a naval officer known for his victory in the Battle of Manila Bay during the Spanish-American War. The county seat is Timber Lake, which serves as the primary hub for local government and services. The population of Dewey County is relatively small, with around 5,000 residents. The area is characterized by its rural landscape, featuring rolling hills and grasslands. The county is home to several Native American communities, including members of the Cheyenne River Sioux Tribe, which plays a significant role in the local culture and economy.