Jay Em is an unincorporated community in northern Goshen County, Wyoming, United States, just below the headwaters of the Rawhide Creek, on the old Texas Trail. It lies along U.S. Route 85, 35 miles north of the city of Torrington, the county seat of Goshen County. Its elevation is 4,590 feet. Although unincorporated, Jay Em has a post office, with ZIP code 82219.