Dallas County is located in the state of Texas and is part of the Dallas-Fort Worth metropolitan area. It was established in 1846 and is named after George M. Dallas, a former Vice President of the United States. The county seat is the city of Dallas, which is known for its cultural and economic significance. The county covers an area of approximately 900 square miles and has a diverse population. It is home to several major attractions, including the Dallas Museum of Art and the Sixth Floor Museum at Dealey Plaza. Dallas County plays a vital role in the economy of Texas and the broader region.