The city of Houston, Texas, is located in Harris County. As of 2010, Harris County was the largest county in Texas and third largest in the United States, with a population of roughly 4.1 million. The county was founded in 1836 and is named after John Richardson Harris.
As of 2012, Houston was the largest city in Texas and the fourth largest in the United States, with a population of 2.16 million people; over six million live in the Houston metropolitan area. Houston is named after Sam Houston, who helped Texas gain independence from Mexico and become part of the United States.