- The population trend prior to the 2008 crisis continues: decentralization (from the metropolitan center towards the second crown) and dispersion (from larger municipalities to smaller ones).
- The second metropolitan crown and non-metropolitan Catalonia are acquiring more relative weight (2006-2020): it grows by 12.4% in this period, the region as a whole grows by 7.9% and Catalonia by 9%. Within the 2nd crown, municipalities with less than 25,000 inhabitants see their population increase by 16.3%, those with less than 100,000 inhabitants do so by 8.8%, while the largest do so by 9.8%.
- In this same period, in Terrassa, 6 out of 10 immigration registrations have come from Catalonia (59.1%), 25.4% from abroad and 15.6% from the rest of the State.
- Of those coming from Catalonia, 83.4% have been generated in the metropolitan area: almost half of the registrations from the metropolitan area have been generated from the Vallès region itself (46.7%) and more than a third from the central metropolitan area (Barcelonès, 35.2% of the total of registrations from the metropolitan area).
- While the reception of population from abroad is mostly linked to the labor market, internal population movements now mostly respond to the housing market.
- Although we cannot categorically state that this growth is due only to population transfer from the first Barcelona crown, the effect of the cost of living in the capital and in other municipalities of that crown, even from closer municipalities , and the current real estate offer makes Terrassa an obvious pole of attraction, especially for families of working age, young people. This is the most relevant factor for the continuous growth of the population. If the situation does not change, the city’s growth rates will remain high.