 Within the electoral divisions of Chile, Penco is represented in the Chamber of Deputies by Sergio Bobadilla (UDI) and Clemira Pacheco (PS) as part of the 45th electoral district, (together with Tomé, Florida, Hualqui, Coronel and Santa Juana).The commune is represented in the Senate by Alejandro Navarro Brain (MAS) and Hosain Sabag Castillo (PDC) as part of the 12th senatorial constituency (Biobío-Cordillera).In addition to the main town of Penco, the commune administers the following villages