Doss is an unincorporated farming and ranching community at the crossroads juncture of FM 783 and FM 648 in northwestern Gillespie County, Texas, United States. It is 19 miles NW of Fredericksburg and 14 miles NW of Harper. Postal zip code is 78618. Elevation is 1729 feet. The U.S. Census for year 2000 shows a total population of 225 1914 Lange's Mill community population was 150 Doss enjoys the same full 4 weather seasons as the rest of the Hill Country. Spring and Fall tend to be moderate, with some extremes in Summer and Winter.