Gueguesangen is a barangay of the philippine municipality Mangaldan in the province Pangasinan in Ilocos Region which is part of the Luzon group of islands. The municipality Mangaldan with a population of about 90,391 and its 30 barangays belongs to the urban areas in the Philippines. Gueguesangen had 2,489 residents by the end of 2007.
Gueguesangen is one of the barangays which are in the outlying area of Municipality Mangaldan.
Other barangays of Mangaldan are:
Alitaya, Amansabina, Anolid, Banaoang, Bantayan, Bari, Bateng, Buenlag, David, Embarcadero, Guesang, Guiguilonen, Guilig, Inlambo, Lanas, Landas, Maasin, Macayug, Malabago, Navaluan, Nibaliw, Osiem, Palua, Poblacion, Pogo, Salaan, Salay, Talogtog, Tebag