San Sebastian
- Country:
- El Salvador
- Continent:
- North America
San Sebastian's 2026 population is now estimated at 14,680.In 2007, the population of San Sebastian was 14,411.San Sebastian has grown by 34 in the last year, which represents a 0.23% annual change.These population values and projections come from DIGESTYC Censo de Poblacion y Vivienda 2007 poblacion por municipio and ONEC-DIGESTYC proyecciones municipales de poblacion 2020-2030 revision 2021.