Historically the area was controlled by two competing baronies, that of Hondarribia, who controlled the Donibane district, and Donostia, who controlled the San Pedro district. Donibane was detached from the Hondarribia barony in 1770, while San Pedro was separated from the Donostia barony in 1805. The Antxo district was formed in 1890, when the Irun-Madrid railway came through. Trintxerpe, next to San Pedro, was the last district to be formed. Trintxerpe and Antxo actually form a continuous urban strip with the eastern districts of the city of Donostia.