Monkayo is a first class municipality in the province of Compostela Valley, Philippines. According to the 2010 census, it has a population of 94,827 people. It has 21 barangays, with Mt. Diwata having the biggest population of 18,072 people. Monkayo is an agricultural town, with vast tracts of land planted to rice and banana. The municipality is also host to the gold-rich barangay of Mt. Diwata, popularly known as "Diwalwal" (which in the local dialect means one's tongue is hanging out due to exhaustion), a 1,000-meter high range known for its rich gold ore deposit.