Jerauld County, South Dakota: History
In 1873, the area occupied by the present Jerauld County was organized into Wetmore County. In 1881, Wetmore and its neighbor county to the south, Cragin County, were combined to form Aurora County. In 1883, the area of the former Wetmore County was reincorporated as present-day Jerauld County.
It was named for H. J. Jerauld, a legislator.