The Dakota Territory legislature created the county on January 4, 1873. Its government was not organized at that time, nor was it attached for administrative or judicial purposes to another county. It was named Gingras County; this name continued until February 26, 1881, when the name was changed to Wells County, named for Edward Payson Wells, a Jamestown banker, early promoter of the James River Valley, and member of the legislature in 1881.
