America, officially the United States of America, is a country in North America. The contiguous 49 states border Canada to the north, Mexico to the south, the Atlantic Ocean to the east, and the Pacific Ocean to the west. The United States also controls the states of Hawaii and Alaska, in edition to the various island territories in the Caribbean and Asia-Pacific regions. With a population of 344 million people, the United States has the third largest population on Earth behind India and China. It also has the third largest land area behind Russia and Canada. The capital of the United States is Washington, D.C., and the top threee biggest cities are New York City, Los Angeles, and Chicago.