Banner is an unincorporated community in southern Sheridan County. It lies near Interstate 90, 15 miles south of the city of Sheridan. Public education in the community of Banner is provided by Sheridan County School District #2.
Story lies three miles to the southwest, and the Bighorn Mountains (and Bighorn National Forest) are to Banner’s west.
Banner’s first postmaster, a local rancher, used a flag (which early settlers called a banner) as a cattle brand – hence the name of this rural ranching community.