Where does the President of the United States live?

The President of the United States lives in the White House, which is located at 1600 Pennsylvania Avenue NW in Washington, D.C. This iconic residence serves not only as the official home of the president but also as a central venue for many official ceremonies and state functions. The White House is a symbol of the presidency and has been the residence of every U.S. president since John Adams in 1800.

In contrast, the Capitol Building houses the United States Congress, where legislative activities take place, while the Supreme Court is the highest court in the federal judiciary, responsible for interpreting laws. The Pentagon serves as the headquarters for the United States Department of Defense and is not related to the president's living arrangements. Thus, the White House stands out as the designated residence for the president, making it the correct answer.