Muir is a Fayette county community at the junction of KY 1970 and KY 1973 near the Bourbon county line. It was once the site of the Muir Station on the Kentucky Central Railway between Lexington and Paris. The name probably comes from John Muir, an early land owner in the area. The Muir post office operated from 1880 to 1951. The post office operated from 1876 to 1880 as Massie's Store in Bourbon county, then in Fayette county, then as Skinners Shop before being named Muir.