The first known document where the place name “Colera” appears is in the deed of consecration of the Saint Quirze church in 935, “Vallen quam vocant Colera”. In the delivery of some private estates given by the earl Guspert of Empúries to the monastery of Saint Quirze in 931, the valley of Colera was named “Valle de Collera”.


The name place Colera possibly comes from the Latin word COLLIS, hill.
In the 4th February 1769, Isidre Ferran Sangenís, a peasant from Garriguella, and his two brothers, Ramon and Josep Sangenis, sent a request to the king Charles III for the creation of the
new village of Colera, with 50 houses together with their neighbours, in their own lands. In the 4th July 1770, the King´s permission for the constitution of a new village called San Miguel de Colera arrives.


It seems that there was also the plan of how the village had to be built: where was the church settled, the city hall, or even the cannons to protect the place. However, there is not a real document that verifies it, but it seems to be this way, according to certain papers.

As for the request of a group of neighbours from Pòrtbou and Molinars, in the 10th April 1885, the Diputació of Girona issued a warrant where the township of Saint Miquel de Colera had to belong to the township of Portbou. The 23th of May 1885, the neighbours of Colera in disagreement with that warrant burnt all the files placed in the city hall. The next day, the 24th, the capital of Portbou was constituted.

The law was signed by the President of the Generalitat the 2nd of July 1934. He himself, Lluis Company, approved the segregation of Colera from the township of Portbou.