El Paso is a city in and the county seat of El Paso County, Texas, United States, in the heart of the American Southwest. According to the United States Census Bureau's 2006 population estimates, the city had a population of 606,913. It is the sixth-largest city in Texas and the 22nd-largest city in the United States, as well as the 7th fastest growing large city in the nation from 2000-2006.] Its metropolitan area covers all of El Paso County. The metropolitan area has a population of 736,310.
El Paso is home to the University of Texas at El Paso (founded in 1914 as The Texas State School of Mines and Metallurgy, and later, Texas Western College; its present name dates from 1967) and the Texas Tech University Health Sciences Center at El Paso. Fort Bliss, one of the largest military complexes of the United States Army, lies to the east and northeast of the city, with training areas extending north into New Mexico, up to the White Sands Missile Range and neighboring Holloman Air Force Base in Alamogordo. The Franklin Mountains extend into El Paso from the north and nearly divide the city into two sections, the western half forming the beginnings of the Mesilla Valley and with the eastern slopes connecting in the central business district at the south end of the mountain range.