Agüero is a village and a municipality located in the province of Huesca, Aragon, Spain. Its postal code is 22808. There are two churches in th…Agüero is a village and a municipality located in the province of Huesca, Aragon, Spain. Its postal code is 22808. There are two churches in the village. The 12th-century Santiago church is the main attraction in the village proper. There is also a small hotel in the village.