Pertusa is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census, the municipality has a population of 1…Pertusa is a municipality located in the province of Huesca, Aragon, Spain. According to the 2004 census, the municipality has a population of 135 inhabitants. Pertusa was an Ilergetes settlement, known only under the same name, which was given under Roman rule.