Sociedad's 2026 population is now estimated at 11,878. In 2007, the population of Sociedad was 11,406. Sociedad has grown by 106 in the last year, which represents a 0.9% 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 .