Terrell County is a county in the U.S. state of Texas. As of the 2020 census, its population was 760, making it the seventh-least populous county in Texas, and the 37th-least populous county in the nation. Its county seat is the census-designated place of Sanderson; no incorporated municipalities are in the county. The county was named for Alexander W. Terrell, a Texas state senator. Terrell County is one of the nine counties in the Trans-Pecos region of West Texas. It is the setting for Cormac McCarthy's novel No Country for Old Men, and the Academy Award-winning film adaptation of the same name.
Reeves County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 14,748. Its county seat and most populous city is Pecos. The county was created in 1883 and organized the next year. It is named for George R. Reeves, a Texas state legislator and colonel in the Confederate Army. It is one of the nine counties that comprise the Trans-Pecos region of West Texas. Reeves County comprises the Pecos micropolitan statistical area.
Presidio County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 6,131. Its county seat is Marfa. The county was created in 1850 and later organized in 1875. Presidio County is in the Trans-Pecos region of West Texas and is named for the border settlement of Presidio del Norte. It is on the Rio Grande, which forms the Mexican border.
Pecos County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 15,193. The county seat is Fort Stockton. The county was created in 1871 and organized in 1875. It is named for the Pecos River. It is one of the nine counties that comprise the Trans-Pecos region of West Texas.
Jeff Davis County is a county in the U.S. state of Texas. As of the 2020 census, its population was 1,996. Its county seat is Fort Davis. The county is named for Jefferson Davis, who served as the 23rd United States Secretary of War in the 1850s, and as Confederate president.
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.
Culberson County is a county located in the U.S. state of Texas. As of the 2020 census, its population was 2,188. The county seat is Van Horn. Culberson County was founded in 1911 and organized the next year. It is named for David B. Culberson, a Confederate soldier and U.S. representative.
Brewster County is a county located in the U.S. state of Texas. It is in West Texas and its county seat is Alpine. It is one of the nine counties that comprise the Trans-Pecos region, and borders Mexico. Brewster County is the largest county by area in the state - at 6,192 square miles (16,040 km2) it is over three times the size of the state of Delaware, and more than 500 square miles (1,300 km2) bigger than Connecticut.
Alpine is a city in and the county seat of Brewster County, Texas, United States. The population was 5,905 at the 2010 census. The town has an elevation of 4,462 feet (1,360 m), and the surrounding mountain peaks are over 1 mile (1.6 km) above sea level. A university, hospital, library, and retail make Alpine the center of the sprawling 12,000 square miles (3,108,000 ha) but wide open Big Bend area including Brewster, Presidio, and Jeff Davis counties.
Fort Stockton is a city in and the county seat of Pecos County, Texas, United States. It is located on Interstate 10, future Interstate 14, U.S. Highways 67, 285, and 385, and the Santa Fe Railroad, 329 mi (529 km) northwest of San Antonio and 240 mi (390 km) southeast of El Paso. Its population was 8,466 at the 2020 census.
The Chihuahuan Desert is a desert ecoregion designation covering parts of northern Mexico and the southwestern United States. It occupies much of far West Texas, the middle to lower Rio Grande Valley and the lower Pecos Valley in New Mexico, and a portion of southeastern Arizona, as well as the central and northern portions of the Mexican Plateau. It is bordered on the west by the Sonoran Desert, the Colorado Plateau, and the extensive Sierra Madre Occidental range, along with northwestern lowlands of the Sierra Madre Oriental range. Its largest, continual expanse is located in Mexico, covering a large portion of the state of Chihuahua, along with portions of Coahuila, north-eastern Durango, the extreme northern part of Zacatecas, and small western portions of Nuevo León. With an area of about 501,896 km2 (193,783 sq mi), it is the largest desert in North America. The desert is fairly young, existing for only 8000 years.
The Big Bend is part of the Trans-Pecos region in southwestern Texas, United States along the border with Mexico, north of the prominent bend in the Rio Grande for which the region is named. Here the Rio Grande passes between the Chisos Mountains in Texas and the Sierra Madre Oriental in Mexico as it changes from running east-southeast to north-northeast. The region covers three counties: Presidio County to the west, Brewster County to the east, and Jeff Davis County to the north.
West Texas is a loosely defined region in the U.S. state of Texas, generally encompassing the arid and semiarid lands west of a line drawn between the cities of Wichita Falls, Abilene, and Del Rio.
State Highway 17 runs from Marfa to Pecos in west Texas. The road is maintained by the Texas Department of Transportation (TxDOT).
Area code 432 is a telephone area code in the North American Numbering Plan (NANP) for the U.S. state of Texas in the Permian Basin and Trans-Pecos areas, including the cities of Midland, Odessa, and Alpine. It was created, along with area code 325, on April 5, 2003 in a split of numbering plan area (NPA) 915.
The Solitario is a large geologic formation in Big Bend Ranch State Park in West Texas. When viewed from above, it suggests an impact crater; though it is actually the eroded remains of a laccolith. The approximate center of the Solitario is located 56.8 km (35.3 mi) east southeast of Presidio, Texas, just west of the line dividing Brewster County, Texas and Presidio County, Texas. The formation covers a circular area of approximately 135 km2 (52 sq mi). The geology of the Solitario is complex. In 1988, the state of Texas purchased the property containing the Solitario and created Big Bend Ranch State Park.
The geography of Texas is diverse and large. Occupying about 7% of the total water and land area of the U.S., it is the second largest state after Alaska, and is the southernmost part of the Great Plains, which end in the south against the folded Sierra Madre Oriental of Mexico. Texas is in the South Central United States of America, and is considered to form part of the U.S. South and also part of the U.S. Southwest.
State Highway 118 is a 155.3-mile (249.9 km) state highway in the U.S. state of Texas that runs from Big Bend National Park north to Kent and passes through the towns of Study Butte, Alpine, and Fort Davis. SH 118 is maintained by the Texas Department of Transportation (TxDOT). The road lies entirely within the Trans-Pecos region of Texas. SH 118 is a two-lane road along its length except for a section in Alpine where the route follows the path of U.S. Route 67 and U.S. Route 90. All of the route except for the 2.8-mile (4.5 km) section between Big Bend National Park and Farm to Market Road 170 is included in the Texas Historical Commission's Texas Mountain Trail.
Allium coryi, common name yellowflower onion, is a plant species endemic to trans-Pecos Texas, but sometimes cultivated as an ornamental elsewhere. It is reported in the wild from only five counties: Brewster, Presidio, Jeff Davis, Pecos and Terrell. Some of the populations lie inside Big Bend National Park.
The Trans-Pecos Volcanic Field is a volcanic field located in western Texas in the counties of Brewster, Jeff Davis, Presidio, and extends into northern Mexican states of Chihuahua and Coahuila. It is the southernmost volcanic field to be documented and recorded in the continental United States. The field started volcanic activity around 48 million years ago in the middle Eocene epoch, and ended around 17 million years later in the Miocene epoch.
United States 
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