This sign is in Barclay, Nevada.
Barclay is a town in Lincoln County, Nevada. Originally a Mormon settlement in the 19th century, it has few residents and appears on several ghost town lists. Main sites in the town include an old Mormon cemetery, and an abandoned Post Office, the latter being one of the few remaining buildings in the town. It also has an old school/church.
The National Mustang Association owns a ranch in the area that serves as a sanctuary for wild horses.