The city of Tucson lies north of the Santa Cruz Valley between the Tucson and Santa Catalina Mountains in arid southeastern Arizona. Located at the junction of I-10 and I-19, Tucson is the gateway to the interior of Mexico as well as a stop along transcontinental I-10 between Los Angeles and El Paso, Texas.
Home to 542,629 people, the city sits at an elevation of 2,389 feet above sea level. While geographically spread over 241 square miles, the city is largely centered around the University of Arizona and Downtown. With so much undeveloped land within its borders, Tucson will continue to rival Phoenix and other Valley of the Sun cities as among the fastest growing areas in the country.