Congosto de Valdavia is a municipality in the province of Palencia, within the autonomous community of Castile and León, Spain. It is located in the northern part of the country, in the region traditionally known as the Valdavia valley.
According to the 2004 census conducted by Spain's National Statistics Institute (INE), the municipality had a population of 239 inhabitants. This small population figure reflects the rural character of the area, which is typical of many municipalities in the sparsely populated interior of Castile and León.
As a municipality, Congosto de Valdavia holds the administrative status that in Spain encompasses a defined territory and its resident population, governed by a local council. Its location in the province of Palencia places it within one of the largest provinces of Castile and León, a region noted for its extensive agricultural landscapes and historic towns.