Coimbra is a city and a municipality in Portugal. The population of the municipality at the 2021 census was 140,796, in an area of 319.40 square kilometres. The fourth-largest agglomerated urban area in Portugal after Lisbon, Porto, and Braga, it is the largest city of the district of Coimbra and the Centro Region. About 460,000 people live in the Região de Coimbra, comprising 19 municipalities and extending into an area of 4,336 square kilometres.