Panama (/ˈpænəmɑː/ PAN-ə-mah; Spanish: Panamá [panaˈma]), officially called the Republic of Panama (Spanish: República de Panamá), is a country usually considered to be entirely in North America or Central America. It is bordered by Costa Rica to the west, Colombia (in South America) to the southeast, the Caribbean Sea to the north and the Pacific Ocean to the south. The capital and largest city is Panama City, whose metropolitan area is home to nearly half of the country's 4.1 million people.