El Peñol is a town and municipality in Antioquia Department, Colombia. The population was 16,223 at the 2018 census. It is part of the subre…El Peñol is a town and municipality in Antioquia Department, Colombia. The population was 16,223 at the 2018 census. It is part of the subregion of Eastern Antioquia. The town is nationally known for the nearby monolith known also as El Peñol, which is a tourist attraction.