Saddlestring is an unincorporated community in northwestern Johnson County, Wyoming, United States, on the eastern edge of the Bighorn National Forest. It lies along local roads northwest of the city of Buffalo, the county seat of Johnson County. Saddlestring possessed its own post office from 1946 to 1965, and from 1967 to 1999; although the post office is now closed, Saddlestring retains its old ZIP Code of 82840.