Plano is located in the state of Texas, located mostly within Collin County. The city’s population was 269,776 at the 2010 census, making it the ninth most populous city in the state of Texas (Corpus Christi is ranked at #8 and Laredo is ranked at #10) and the 70th most populous city in the United States. Plano is located within the metropolitan area commonly referred to as the Dallas–Fort Worth metroplex. The city is home to many corporate headquarters: Alliance Data, Cinemark Theatres, Dell Services, Dr Pepper Snapple Group, Ericsson, Frito-Lay, HP Enterprise Services, Huawei, J. C. Penney, Pizza Hut, Rent-A-Center, Traxxas, and Siemens PLM Software.
Plano was the highest income place with a population of 130,000 or more in 2000. Plano was ranked the most affluent city with a population over 250,000 in the United States with the lowest poverty rate of 6.3%. Its neighbor to the northwest, Frisco, was ranked the richest city for the population of under 250,000 in the United States with a 2.7% poverty rate. In 2007, Plano had the highest median income of a city with a population exceeding 250,000 in the nation at $84,492. As of 2010, Plano has a median income of $103,913 annually. According to crime statistics, there were four homicides in Plano in 2006, the lowest homicide rate of all U.S. cities of 250,000 or more population.