Los Barrios has a population of approximately 23,000 residents, with a demographic profile that reflects a mix of locals and expatriates, particularly those from neighboring Gibraltar and other parts of Europe. The town has experienced moderate population growth in recent years, driven by its attractive living conditions, proximity to key economic centers, and appeal as a tourist destination.
The community is diverse, with a strong Andalusian identity that is evident in the local customs, language, and festivals. The town also has a growing expatriate community, drawn by the pleasant climate, relaxed lifestyle, and affordable cost of living. The population tends to skew slightly younger, with many families and professionals choosing to settle in the area due to its proximity to employment hubs like the Port of Algeciras and Gibraltar.