Ilocos Region occupies the narrow plain between the Cordillera Central mountain range and the South China Sea. The region also occupies the northern portion of the Central Luzon plain, to the northeast of the Zambales Mountains. Lingayen Gulf is the most notable body of water in the region and it contains a number of islands, including the Hundred Islands National Park. To the north of the region is Luzon Strait.

The Agno river runs through Pangasinan and empties into Lingayen Gulf. The river flow into a broad delta in the vicinity of Lingayen and Dagupan City.

• The Ilocos Region is located at the northern tip of the Island of Luzon along the international Sea Lanes of South China Sea
  
• It is bounded on the north by the Province of Cagayan; on the east by Kalinga, Apayao, Mountain Province Benguet and Nueva Viscaya; Tarlac and Zambales on the south. To its west is the South China Sea.

Hundred Islands National Park. Located in the Lingayen Gulf in Pangasinan.

Vigan colonial houses. Vigan City is famous for its cobblestone streets and Spanish-style houses. Many films depicting the Spanish era have been shot here.