The majority of Valls' population, 79.3%, holds Spanish nationality. The remaining 20.7% are foreign nationals, indicating significant cultural diversity within the municipality.
The most numerous foreign nationality in Valls is Moroccan, with 2,154 residents. This is followed by Colombian (579 people), Romanian (437), Ukrainian (283), and Pakistani (200). The presence of residents from other countries in Africa, America, Europe, and Asia, such as Algeria, Senegal, Venezuela, Ecuador, Brazil, Poland, Italy, and China, highlights the city's cultural richness.
This diversity has seen consistent growth in recent years. In 2021, Valls recorded 81 nationalities, an increase from the 72 nationalities registered in 2010, demonstrating the growing number of countries of origin for its residents.
