Nagsaing is a barangay of the philippine municipality Calasiao in the province Pangasinan in Ilocos Region which is part of the Luzon group of islands. The municipality Calasiao with a population of about 85,419 and its 24 barangays belongs to the urban areas in the Philippines. Nagsaing had 5,176 residents by the end of 2007.
Nagsaing belongs to the barangays of Municipality Calasiao which are in the outlying area.
Other barangays of Calasiao are:
Ambonao, Ambuetel, Banaoang, Bued, Buenlag, Cabilocaan, Dinalaoan, Doyong, Gabon, Lasip, Longos, Lumbang, Macabito, Malabago, Mancup, Nalsian, Poblacion East, Poblacion West, Quesban, San Miguel, San Vicente, Songkoy, Talibaew