San Francisco de Campeche, 19th c., also known simply as Campeche, is a city in Campeche Municipality in the Mexican state of Campeche, on the shore of the Bay of Campeche in the Gulf of Mexico. Both the seat of the municipality and the state's capital, the city had a population of 220,389 in the 2010 census, while the municipality had a population of 259,005.