Mexico, officially the United Mexican States, is a country in the southern portion of North America. It is bordered to the north by the United States; to the south and west by the Pacific Ocean; to the southeast by Guatemala, Belize, and the Caribbean Sea; and to the east by the Gulf of Mexico. Mexico covers 1,972,550 km2, making it the world's 13th-largest country by area; with a population of almost 130 million, it is the 10th-most-populous country and has the most Spanish speakers.