It is composed of Alaminos, Agno, Anda, Bani, Bolinao, Burgos, Dasol, Infanta, Mabini & Sual[2] According to the 2007 Philippine census, OPAL is home to 379,637 people and a land area of 1,759.

OPAL is bounded by the 2nd District of Pangasinan to the South East, Lingayen Gulf to the North and North East, South China Sea facing West and Zambales on the South.

OPAL's economic drivers are Aquaculture, Tourism, Farming and Mineral extraction.

Fish pens and fishponds dot the coastline of OPAL.

The major crops in are rice, mangoes, and corn.