La Unión has a population of around 19,000 residents, making it a relatively small but vibrant city. The majority of the population is Spanish, with a growing number of international residents drawn to the area’s peaceful lifestyle and proximity to larger cities and coastal areas. The demographic profile of La Unión reflects a mix of age groups, with families, working professionals, and retirees making up the bulk of the population.
In recent years, La Unión has seen a slight increase in population, driven by its growing appeal as a residential area for those working in nearby cities like Cartagena and Murcia. The city’s relaxed atmosphere, combined with its cultural richness, makes it an attractive destination for people looking for a slower pace of life.