Boys Ranch is a census-designated place and unincorporated community in northeastern Oldham County, Texas, United States, on the site of the original county seat, Tascosa. It lies along U.S. Route 385 northeast of the city of Vega, the county seat of Oldham County. Although Boys Ranch is unincorporated, it has a post office, with the ZIP code of 79010. This was a new CDP for the 2010 census with a population of 282. 
Boys Ranch is located at 35°32′0″N 102°15′13″W / 35.53333°N 102.25361°W (35.533189, -102.253684). The CDP has a total area of 1.6 square miles (4.1 km2), all land.  Its elevation is 3,186 feet (971 m).
Boys Ranch is served by the Boys Ranch Independent School District and Boys Ranch High School.
According to the Köppen Climate Classification system, Boys Ranch has a semi-arid climate, abbreviated "BSk" on climate maps.