Texas is the second largest U.S. state, behind Alaska, with an area of 268,820 square miles (696,200 km2). It is 10% larger than France and almost twice as large as Germany or Japan, though it ranks only 27th worldwide amongst country subdivisions by size. If it were a country, Texas would be the 40th largest behind Chile and Zambia.

Texas is in the south-central part of the United States of America. Three of its borders are defined by rivers. The Rio Grande river forms a natural border with the Mexican states of Chihuahua, Coahuila, Nuevo León, and Tamaulipas to the south. The Red River forms a natural border with Oklahoma and Arkansas to the north. The Sabine River forms a natural border with Louisiana to the east. The Texas Panhandle has an eastern border with Oklahoma at 100° W, a northern border with Oklahoma at 36°30' N and a western border with New Mexico at 103° W. El Paso lies on the state's western tip at 32° N and the Rio Grande.

Republic of Texas (group)