Mindanao is the second largest and southernmost major island in the Philippines. It is also the name of one of the three regional island groups in the country (the other two being Luzon and the Visayas), consisting of the island of Mindanao and smaller outlying islands. Davao City is the largest city in Mindanao.
As of the 2010 census, the island's population itself is 20,281,545 people, while the Mindanao island group has 21,968,174 inhabitants. Davao City is the most populous in Mindanao as 1,632,991 population, and the 2nd is Zamboanga City as 861,799 population, the 3rd is Cagayan de Oro City as 675,950 population, and followed by General Santos City as 594,446 population as of 2015 census.
Davao City is relatively safe but the Islamic areas are unsafe and many foreigners are kidnapped and killed.