Aldeaseca is a municipality in Spain, located in the province of Ávila within the autonomous community of Castile and León. It lies in the central part of the country, in a region characterised by the high plains and rolling terrain of the northern Meseta.
According to the 2025 census conducted by Spain's National Statistics Institute (INE), the municipality had a population of 211 inhabitants. This small population figure reflects the modest scale typical of many rural municipalities in the province of Ávila.
As a municipality, Aldeaseca forms the basic unit of local administration in Spain, encompassing the settlement and its surrounding territory. Its location in Castile and León places it within one of the country's largest autonomous communities, whose capital is Valladolid.