Lambunao, officially the Municipality of Lambunao, is a 1st class municipality in the province of Iloilo, Philippines. According to the 202…Lambunao, officially the Municipality of Lambunao, is a 1st class municipality in the province of Iloilo, Philippines. According to the 2020 census, it has a population of 81,236 people. Lambunao is the largest municipality in Iloilo in terms of land area and is 47 kilometres from Iloilo City.