Cabanatuan, officially the City of Cabanatuan, is a highly urbanized city in the province of Nueva Ecija, Philippines. According to the 2020 cens…Cabanatuan, officially the City of Cabanatuan, is a highly urbanized city in the province of Nueva Ecija, Philippines. According to the 2020 census, it has a population of 327,325 people, making it the most populous city in Nueva Ecija and the fifth-most populous in Central Luzon.