Yosa de Garcipollera is an abandoned town belonging to the municipality of Jaca, in the province of Huesca, in Spain.

It is part of the Garcipollera Valley, in the region of Jacetania, in the autonomous community of Aragon.

This village has no population, after having been expropriated in the 1960s for the construction of the Yesa Reservoir, with the intention of replanting it with pine trees to prevent the accumulation of sediments by the rains from accelerating the clogging of the newly built reservoir.

Demographic data of the town of Yosa de Garcipollera since 1900.

[1][2] Demographic data of the municipality of Yosa de Garcipollera since 1842:[3]