Himamaylan, officially the City of Himamaylan, is a component city in the province of Negros Occidental, Philippines. According to the 2020 ce…Himamaylan, officially the City of Himamaylan, is a component city in the province of Negros Occidental, Philippines. According to the 2020 census, it has a population of 116,240 people. Due to its coastal location, it is a rich source of different types of seafood, mainly fish, oysters, mussels and shrimps. The city celebrates the Himaya-an Festival every April 14–25.