San Vicente de Castellet has a population of around 9,500 residents, giving it a small-town feel while still being connected to larger urban areas. The town has a predominantly Catalan population, with a growing number of international residents drawn by its proximity to Barcelona and its tranquil lifestyle. The population is relatively diverse, with a mix of families, retirees, and younger professionals who commute to larger cities for work.
There has been steady growth in the population in recent years, reflecting its appeal as a residential area for those seeking a peaceful environment within commuting distance of Barcelona. The local community is known for being welcoming, with a strong sense of cultural identity tied to Catalonian traditions.