Hudspeth County is a county located in the U.S. state of Texas. As of the 2020 census, the population was 3,202. Its county seat is Sierra Blanca, and the largest community is Fort Hancock. The county is named for Claude Benton Hudspeth, a state senator and United States Representative from El Paso. It is northeast of the Mexico–U.S. border.

The Trans-Pecos, as originally defined in 1887 by the Texas geologist Robert T. Hill, is the distinct portion of Texas that lies west of the Pecos River. The term is considered synonymous with Far West Texas, a subdivision of West Texas. The Trans-Pecos is part of the Chihuahuan Desert, the largest desert in North America. It is the most mountainous and arid portion of the state, and most of its vast area is sparsely populated. Among the nine counties in the region are the five largest counties by area in Texas and eight of the eleven largest in the state. The area is known for the natural environment of the Big Bend and the gorge of the Rio Grande, part of which has been designated a National Wild and Scenic Rivers System. With the notable exceptions of Big Bend Ranch State Park, Big Bend National Park and the Guadalupe Mountains National Park, the vast majority of the Trans-Pecos region consists of privately owned ranchland. However, most of the region's population reside in the El Paso metropolitan area. Besides El Paso and its metropolitan area, the major cities are Pecos (12,916), Fort Stockton (8,466), and Alpine (6,035). All other settlements have under 5,000 people.