Ilopango's 2026 population is now estimated at 120,166. In 2007, the population of Ilopango was 103,862. Ilopango has grown by 164 in the last year, which represents a 0.14% 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 .