Calabanga, officially the Municipality of Calabanga, is a 1st class municipality in the province of Camarines Sur, Philippines. Accordin…Calabanga, officially the Municipality of Calabanga, is a 1st class municipality in the province of Camarines Sur, Philippines. According to the 2020 census, it has a population of 88,906 people. It has a land area of 16,380 hectares, which constitutes 3.1% of the Camarines Sur's land area.