Sanlúcar la Mayor is home to approximately 15,000 residents, with a demographic mix that reflects a traditional Andalusian town. Most of the population is of Spanish descent, with a small but growing number of expatriates who have chosen to settle in the area due to its peaceful environment and proximity to Seville.
The population is spread across a range of age groups, with many young families and retirees living in the town. In recent years, there has been an increase in tourism and new residents, contributing to a more diverse community. Despite this, Sanlúcar la Mayor retains its strong sense of local identity, with traditional customs and family values at the core of its social life.