Antwerp is a city and a municipality in the Flemish Region of Belgium. It is the capital and largest city of Antwerp Province, and the third-largest municipality in Belgium by area at 208.22 km2 (80.39 sq mi). With a population of 565,039, it is the most populous municipality in Belgium, and with a metropolitan population of over 1.2 million people, the country's second-largest metropolitan area after Brussels.