Named in the honor of the Sioux Native American tribe, the Sioux County was created in the year 1877 with an area of 2,067 sq mi. About 1.3K people with a racial makeup including White, Native American, Black or African American, Asian, Hispanic or Latino, Pacific Islander, and others along with more than 0.6K households and 0.4K families live here. Harrison is the selected county seat and the largest city.

The Sioux County records archive offers immense information on birth and census index, obituary and death news, marriage and divorce decree information, military service and enlistment details, statistics of the adoptees and their adoption index, deeds, property and land records, probates and liens archive and so on that depicts a vivid picture of the ancestry and other genealogical facts at an ease!