Pierce County is located in the state of Washington, in the Pacific Northwest region of the United States. It is named after Franklin Pierce, the 14th President of the United States. The county is known for its diverse landscapes, which include mountains, forests, and waterways, making it a popular destination for outdoor activities. The county seat is Tacoma, which is also the largest city in Pierce County. The area is home to several parks, recreational areas, and cultural institutions, including the Museum of Glass and the Point Defiance Zoo & Aquarium. Pierce County is part of the Seattle-Tacoma-Bellevue metropolitan area.