San Martín de la Vega is home to approximately 19,000 residents, making it a small but thriving community within the Province of Madrid. The town has seen steady population growth over the past few decades, driven in part by its proximity to Madrid and the increased interest in suburban living. The population is predominantly Spanish, with a mix of younger families and older generations who have long-standing roots in the town.
In recent years, the town has also attracted international residents, particularly those working in Madrid but seeking a quieter lifestyle. This growing diversity is reflected in the local schools and businesses, where a range of cultural influences can be seen. The town’s population is balanced between working professionals, retirees, and students, creating a dynamic and welcoming community.