Coimbra (, also US: , UK: , Portuguese: [kuˈĩbɾɐ] (listen) or [ˈkwĩbɾɐ]) is a city and a municipality in Portugal. The population at the 2011 census was 143,397, in an area of 319.40 square kilometres (123.3 sq mi).The fourth-largest urban centre in Portugal (after Lisbon, Porto and Braga), it is the largest city of the district of Coimbra and the Centro Region.