What is the Capital of United States?

The capital of United States is Washington D.C., which was founded 7/6/1790. Washington D.C. has been the capital since 7/16/1790.

Although Washington D.C. is not the largest city in United States, it Houses the White House.

Washington D.C. is located at 38.9072° N, 77.0369° W at an elevation of 72'.