Barcelona is a province of eastern Spain, in the center of the autonomous community of Catalonia. The province is bordered by the provinces of Tarragona, Lleida, and Girona, and by the Mediterranean Sea. Its area is 7,726 km2 (2,983 sq mi). 5,743,402 people live in the province, of whom about 29% (1,664,182) live within the administrative limits of the city of Barcelona, which itself is contained in the Barcelona metropolitan area.

Badalona is a municipality in Barcelonès county, in Catalonia (Spain). It is located to the north east of Barcelona, on the left bank of the Besòs River and on the Mediterranean Sea, in the Barcelona metropolitan area. By population, it is the third largest city in Catalonia and the twenty-third in Spain. It became a city in 1897.