Nampicuan, officially the Municipality of Nampicuan, is a municipality in the province of Nueva Ecija, Philippines. According to the 2020 census, i…Nampicuan, officially the Municipality of Nampicuan, is a municipality in the province of Nueva Ecija, Philippines. According to the 2020 census, it has a population of 14,471 people, making it the least populated municipality in the province.