Demography
In the 14th century, an estimated population of Vallés Occidental and continued until the ages 16 and 17. Later in the 18th century the population grows to fifteen thousand people a great improvement in the field. In 1857 the population over fifty thousand inhabitants and Sabadell and Terrassa namedthe two capitals of Vallés. This growth will not stop growing. In the 20th century the population makes a strong growth. In 1981 he reached the six hundred thousand inhabitants in the region. during the eighties relantiza growth but does not stop. The most recent population growth in the region is mainly explained by the natural population growth, by the arrival of people from Barcelona and its metropolitan area insearch of a better quality of life, and the new migration flows. Characteristics of each municipality in the district: