Malalag, officially the Municipality of Malalag, is a municipality in the province of Davao del Sur, Philippines. According to the 2020 census…Malalag, officially the Municipality of Malalag, is a municipality in the province of Davao del Sur, Philippines. According to the 2020 census, it has a population of 40,158 people. Malalag is the agricultural center of Davao del Sur, and its main products are banana, coconut and other fruits and vegetables. Other primary industries include fishing and mining.