The Chiang Mai Map product has two maps in it, one is the province’s district map and the other is the provincial outline map. Chiang Mai Map has 25 districts, with each district as an individual shape.
Chiang Mai is one of Thailand’s seventy-six provinces lies in upper northern Thailand, with Chiang Rai, Lampang, Lamphun, Tak, and Mae Hong Son as the neighboring provinces. It also borders Shan State of Burma.
You can further explore this Thailand province administrative division in Wikipedia.