Each strata had been then hierarchically subdivided. Provinces are further subdivided into regions and communes. These Regions are subdivided into 36 departments. The MSA is further subdivided into four metropolitan divisions. The provinces are subdivided into 265 municipalities. Municipalities are subdivided into wards or barrios, and those into sectors. Cainta is politically subdivided into seven barangays. It is further subdivided into twenty districts. Each region is then subdivided into areas. The districts are further subdivided into 38 municipalities (; ). The governorates are further subdivided into areas. Each is further subdivided into smaller entities. These are further subdivided into 24 municipalities. Geopolitically, the island is subdivided into four main segments. Districts are subdivided into municipalities ().