El Salvador is a municipality and town in the Guantánamo Province of Cuba. It is located immediately north of the provincial capital, Guantá…El Salvador is a municipality and town in the Guantánamo Province of Cuba. It is located immediately north of the provincial capital, Guantánamo. In 2022, the municipality of El Salvador had a population of 41,420. With a total area of 637 km², it has a population density of 65/km². The urban population was 9,087.