Geographically the Archdiocese of Lingayen-Dagupan is situated in the central part of the province of Pangasinan. It is bounded on the east by the Diocese of Urdaneta, on the west by the Diocese of Alaminos, both places also in Pangasinan. On the south it is bounded by the province and Diocese of Tarlac, on the north and northwest by the Lingayen Gulf and the Diocese of San Fernando, La Union.
There are about 980,000 inhabitants in the archdiocese, 90 per cent of whom are Catholics. A majority of the people speak the Pangasinan dialect. The people are bound by strong family ties. The family is traditionally religious, and most local interactions are characterized by religious tradition. Most social celebrations are also related to religious events.