Republic of the Philippines (Sixteen Regions)

{| class="wikitable" width="100%" style="text-align:center; font-size: 80%" ! {| class="wikitable" ! ! Region City Municipality ! Capital ! Land Area (SQ.KM.) ! Projected Population (2015) ! Date ! Cities ! Municipality ! Barangay ! Zip Code ! Major Languages and Dialects
 * align="center" bgcolor="Red" | REGION I - ILOCOS REGION
 * align="center" bgcolor="Red" | REGION I - ILOCOS REGION
 * ILOCOS NORTE
 * Laoag City
 * 3,467.0
 * 653,300
 * March 10, 1917
 * Batac City
 * Adams, Bacarra, Badoc, Bangui, Banna, Burgos, Carasi, Currimao, Dingras, Dumalneg, Marcos, Nueva Era, Pagudpud, Paoay, Pasuquin, Piddig, Pinili, San Nicolas, Sarrat, Solsona, Vintar
 * 21
 * 2900
 * Iloko, Tagalog
 * Iloko, Tagalog