San Isidro's 2026 population is now estimated at 6,834. In 2007, the population of San Isidro was 7,796. San Isidro has grown by 39 in the last year, which represents a 0.57% 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 .