thumb|U.S. Highway 87 runs through Hartley. Hartley is a census-designated place (CDP) in Hartley County, Texas, United States. The population was 540 at the 2010 census.
thumb|U.S. Highway 87 runs through Hartley. Hartley is a census-designated place (CDP) in Hartley County, Texas, United States. The population was 540 at the 2010 census.