Calayan is an island in the Philippines under the jurisdiction of Calayan in the province of Cagayan. The island lies within the South China Sea.

Calayan has an approximate area of 204.69 square kilometers or 79.03 square miles, and roughly has a coastline length of 76.60 kilometers or 47.60 miles. The island is situated at approximately 19.3187, 121.4569. Elevation at these coordinates is estimated at 377 meters or 1,236.88 feet above mean sea level.


  1. Land area figures and coastline length were calculated from OpenStreetMap data.
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