What is the capital city of the United States?

The capital city of the United States is Washington, D.C. Established as the nation’s capital in 1790, Washington, D.C. was chosen for its location along the Potomac River, providing a central site for the federal government. It is home to the three branches of government: the Executive (the White House), the Legislative (Congress), and the Judicial (Supreme Court). The city was specifically planned to reflect the ideals of the new nation and is filled with monuments and museums that represent American history and culture.

The other cities mentioned, such as New York, Los Angeles, and Chicago, serve significant cultural, financial, and economic roles in the U.S., but they do not function as the capital. New York City was the first capital under the Constitution but lost that status to Washington, D.C. after it was built.