Southlake is an affluent suburban city located in Tarrant County within the state of Texas. It is located within the Dallas-Fort Worth metropolitan area. As of the 2010 census it had a population of 26,575. Southlake is known for public schools, Southlake Town Square, its wealth, and Carroll High School’s 8-time state champion football team. The Southlake area was settled by pioneers in the 1840s, but was not incorporated as Southlake until 1956, four years after Grapevine Lake was finished. Before incorporation, the settlements of Whites Chapel, Dove, Union Church and Jellico made up present day Southlake. The area remained rural until the completion of the DFW International Airport in the 1970s. Due to the close proximity to the airport, Southlake became a boom-burb throughout the 1980s, 1990s and 2000s. As of 2012, Southlake’s population is almost at full capacity, with around 27,000 residents. The expected build-out population is projected around 34,000 residents. In December 2008, Forbes.com named Southlake the most affluent neighborhood in the United States based on average median household income estimates. The mean household income for the city of Southlake is $216,393. In 2009, Southlake’s zip code, 76092, was ranked as the richest zip code in the United States with a population between 10,000–25,000 people. The average home in Southlake costs around $784,522 and has 4 bedrooms, 4 bathrooms and around 4,000 square feet (370 m2).