According to the 2017 census of the National Statistics Institute, Hualqui spans an area of 530.5km2 (205sqmi) and has 24,333 inhabitants (11,843 men and 12,490 women). Of these, 20,889 (85.8%) lived in urban areas and 3,444 (14.2%) in rural areas. The population grew by 16.2% (2,612 persons) between the 1992 and 2002 censuses.[3]
Within the electoral divisions of Chile, Hualqui 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, Penco, Florida, 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).