Lubbock is a city in and the county seat of Lubbock County, Texas, United States. The city is located in the northwestern part of the state, a region known historically as the Llano Estacado, and is home to three universities: Lubbock Christian University, Texas Tech University, and Texas Tech University Health Sciences Center. At the 2010 census, Lubbock had a population of 229,573, making it the 87th most populous city in the United States of America and the 11th most populous city in the state of Texas. The city is the economic center of the Lubbock metropolitan area, which had an estimated 2009 population of 276,659. Lubbock's nickname is the 'Hub City', which derives from it being the economic, education, and health care hub of a multicounty region commonly called the South Plains. The area is the largest contiguous cotton-growing region in the world and is heavily dependent on irrigation water drawn from the Ogallala Aquifer.
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