The registered population in Catalonia on 1 January 2017 was 7,551,285 inhabitants, according to provisional data from the Municipal Population Register. This figure represents a growth of 28,689 people (0.4%) with respect to 1 January 2016. This is the second year that the registered population has increased in Catalonia, after three consecutive years of decline (from 2013 to 2015).
By provinces, the registered population of Barcelona has grown 0.5% and that of Girona, 0.2%, while the registered populations of Lleida and Tarragona have fallen by 0.4% and 0.1%, respectively.
By nationality, the foreign population is 1,038,455 inhabitants, with a growth of 15,057 people (1.5%). The population of Spanish nationality, which is 6,512,830 inhabitants, has grown by 13,632 people (0.2%). The population of foreign nationality accounts for 13.8% of the total.
The source of this data is the Municipal Population Register on January 1, which is the administrative register that accounts for the residents of a municipality and constitutes proof of their residence in said municipality. Its formation, maintenance and management is the responsibility of each respective local council. The INE carries out the coordination and purification work of the municipal registers.
The provisional data from the statistical treatment of the Municipal Population Register are only available by province. Population data disaggregated according to the variables of sex, age, place of birth and nationality is provided.
In December 2017, Idescat will publish the definitive population figures by municipality, counties and Aran, areas of the Territorial Plan and provinces. The population figures will be declared official in each of the municipalities by the Government of Spain, by means of a Royal Decree (see Which population figures does Idescat publish?).