Mati is a coastal component city in the province of Davao Oriental. It serves as the provincial capital.

The city center of Mati is situated at approximately 6° 58′ North, 126° 13′ East, in the island of Mindanao. Elevation at these coordinates is estimated at 77.8 meters or 255.2 feet above mean sea level.

The city has a land area of 588.63 square kilometers or 227.27 square miles which constitutes 10.36% of Davao Oriental’s total area. Its population as determined by the 2015 Census was 141,141. This represented 25.25% of the total population of Davao Oriental province, or 2.88% of the overall population of the Davao Region. Based on these figures, the population density is computed at 240 inhabitants per square kilometer or 621 inhabitants per square mile

Mati has 26 barangays namely Badas, Bobon, Buso, Cabuaya, Central (City Proper/Poblacion), Culian, Dahican, Danao, Dawan, Don Enrique Lopez, Don Martin Marundan, Don Salvador Lopez Sr., Langka, Lawigan, Libudon, Luban, Macambol, Mamali, Matiao, Mayo, Sainz, Sanghay, Tagabakid, Tagbinonga, Taguibo, and Tamisan.

According to the Bureau of Local Government Finance, the annual regular revenue of Mati for the fiscal year of 2016 was
₱ 812,896,522.17.