Castejón de Sos (Spanish:[kasteˈxondeˈsos]), in Benasquese: Castilló de Sos, is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census (INE), the municipality had a population of 731 inhabitants.
Castejon de Sos from Chia (from west)
^Jesús Martín de las Pueblas Rodríguez and María Asunción Hidalgo Arellano (2002). Municipio de Castejón de Sos. Toponimia de Ribagorza. Lleida: Editorial Milenio-Gobierno de Aragón. ISBN84-9743-045-X.
^As shown in the Legislative Decree 2/2006 of 27 December, of the Government of Aragon, by the revised text of the Law on Comarcal Demarcation of Aragon is approved.
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