Isla Cristina has a population of around 21,000 people, with a mix of local residents and seasonal visitors who come for its tourist attractions and fishing industry. The city has a relatively stable population, with a strong connection to its maritime roots.
The demographic composition is largely Spanish, with a growing number of international residents, particularly from neighboring Portugal and other European countries. The city’s population tends to increase during the summer months, when tourists from across Spain and Europe visit to enjoy the beaches and festivals.