The United States of America ( USA ), also known as the United States ( U.S .) or America , is a country primarily located in North America . It is a federal republic of 50 states and a federal capital district, Washington, D.C. The 48 contiguous states border Canada to the north and Mexico to the south, with the semi-exclave of Alaska in the northwest and the archipelago of Hawaii in the Pacific Ocean. The United States also asserts sovereignty over five major island territories and various ... This article lists the 50 states of the United States . It also lists their populations, the date they became a state or agreed to the United States Declaration of Independence, their total area, land area, water area, and the number of representatives in the United States House of Representatives. Washington D.C., (Washington, District of Columbia) is a federal district and capital of the United States and is not considered a state . The United States also has sovereignty over 14 other ... Learn the names and locations of the 50 state capitals in the US. Find fun facts, a map, and a quiz to test your knowledge.
