The region was previously known as Tanga Province and included Same and Mwanga districts that are at present in Kilimanjaro Region.
Districts
The region is administratively divided into eight districts:
Demographics
As per the 2012 census, it has a population of 2,045,205 The tribes that have migrated to the region are the Pare, Wataita, Wasambaa, Wambugu, Segeju, Wadigo, Wanago and Wazigua.