The economy of Castelldefels is primarily driven by tourism, which is fueled by the city’s beautiful beaches, excellent connectivity to Barcelona, and its array of tourist-friendly amenities. The hospitality sector, including hotels, restaurants, and recreational facilities, plays a significant role in the local economy. Additionally, real estate development, particularly luxury beachfront properties, has contributed to the city’s growth.
Castelldefels is also known as a hub for technology and innovation, thanks in part to its proximity to Barcelona’s tech scene. Several research institutes and universities in the region focus on technology, engineering, and space exploration, attracting both students and professionals. Local products include traditional Catalan foods, wine, and crafts, which are available in the city’s markets and restaurants, offering visitors a taste of local culture.