County covers all that vast area of country
north of Cheyenne County, and extends west
to Wyoming Territory, and
north to Dakota Territory, and in fact all
of the unorganized tract known as Northwestern
it is named Sioux County, and attached to
Cheyenne County for revenue and judiciary.
county seat is named Harrison.
We regret that we are unable to perform personal research.
This county website is available for adoption
If you can make a basic webpage and have a desire to transcribe data for this county, we're looking for hosts. View our Volunteer Information Page and contact Kim
There are other state and county sites that are up for adoption. If you would like to become a volunteer host for any of the sites available, contact Kim.