Castejón de Sos (), in Benasquese: Castilló de Sos,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.Toponyms: towns with local name in Aragonese in Great Aragonese Encyclopedia 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.
See also List of municipalities in Huesca
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