Jaca is a municipality in Spain, in the province of Huesca, in Aragon. On 1 January 2025 it had 14,024 inhabitants according to the INE municipal register (padrón), over an area of about 403.9 km².
Population density is about 35 per km²: a partly rural municipality, with a main town and scattered villages or developments. Of the 7 municipalities in the province of Huesca with at least 5,000 inhabitants, it is number 5 by population.
As the crow flies it lies about 48 km north of Huesca, the provincial capital. The nearest major city is Zaragoza, about 105 km away.
To explore the area, use the map of neighbouring municipalities and the accommodation options in and around Jaca; all the municipalities in the province of Huesca are listed on their own page.