Aguilar de Campoo is a town and municipality of Spain located in the North of province of Palencia, autonomous community of Castile and León. The River Pisuerga flows through its historic centre. Its 2011 population was 7741. It is one of the locations of the St. James' Northern Way. Since 2017, the municipality has been included in the Geopark of Las Loras, the first UNESCO Geopark in Castile and León.