The registered population in Catalonia on 1 January 2018 was 7,596,131 inhabitants, according to provisional data from the Municipal Register of inhabitants, with a growth of 40,301 people (0.5%) with respect to 1 January 2017. The population registered in 2018 it represents the highest figure ever recorded in Catalonia after the maximum reached in 2012 of 7,570,908 inhabitants.
By provinces, the registered population of Barcelona grew by 0.6%; Girona's 0.7%, and Tarragona's 0.5%; On the other hand, the population registered of Lleida remains practically the same as the previous year (432,383 inhabitants).
By nationality, the foreign population is 1,079,712 inhabitants, with a growth of 38,350 people (3.7%). The population of Spanish nationality, which is 6,516,419 inhabitants, has grown by 1,951 people (0.03%). The population of foreign nationality accounts for 14.2% of the total.
The source of this data is the Municipal Population Register (PMH) 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 2018, 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?).