Estadilla is a municipality in the province of Huesca, in the autonomous community of Aragon, Spain. It is located in the northeastern part of the country, within the comarca of Somontano de Barbastro.
According to the 2018 census conducted by the Instituto Nacional de Estadística (INE), the municipality had a population of 794 inhabitants. The town lies near the Sierra de la Carrodilla and the Cinca river valley, in a semi-arid landscape typical of the Somontano area.
Estadilla is known for its historic core, which includes the 16th-century Church of the Assumption and the remains of a medieval castle. The local economy has traditionally been based on agriculture, particularly the cultivation of olives, almonds, and grapes, the latter tied to the region's wine production under the Somontano designation of origin.