North America is a continent located in the Northern Hemisphere. It is bordered by the Arctic Ocean to the north, the Atlantic Ocean to the east and west, and the Pacific Ocean and South America to the west and south. North America covers about 9.5 million square miles and is home to countries like the United States, Canada, Mexico, and Caribbean island nations. The population of North America is concentrated mainly in the United States, Mexico, and Canada, with major cities including Mexico City, New York City, Los Angeles, and Toronto.