False. Washington, D.C. is located in the District of Columbia, which is not part of any U.S. state.
Washington, D.C. is the capital of the United States and is located in the District of Columbia. The District of Columbia is a federal district that is not part of any U.S. state. The city was founded in 1790 and is home to a number of important government buildings and monuments, such as the White House, the U.S. Capitol, and the Washington Monument. It is also home to a number of museums, galleries, and other attractions, such as the Smithsonian Institution.