What is the county in which Sierra-at-Tahoe is located?
Sierra-at-Tahoe:  Sierra-at-Tahoe is approximately 16 miles (26 km) south of Stateline, Nevada and 12 miles south of South Lake Tahoe on U.S. Route 50 and is contained within the Eldorado National Forest. Stateline, Nevada: Stateline is a census-designated place (CDP) on the east shore of Lake Tahoe in Douglas County, Nevada, United States.
Douglas County