When Taipei was promoted as a special municipality by the central government in 1967, several townships surrounding the city were merged into Taipei City and were reorganized as its districts.
On 4 February 2014, six districts were reclassified as Special Municipal Mountain Indigenous District (; or shortened as Mountain Indigenous District ()): Wulai in New Taipei, Fuxing in Taoyuan, Heping in Taichung, along with Namasia, Maolin, and Taoyuan in Kaohsiung.