The island itself is subdivided across three municipalities. The municipality of Polillo covers the southern portion of the island, while the northeastern part is administered by the municipality of Burdeos. The northwest is within the jurisdiction of the municipality of Panukulan. The island is also home to the Butaan lizard, a vulnerable relative of the Komodo dragon.[3]
As of the 2010 Philippine Census, the island is home to 64,802 individuals.[2]
In the mid-16th century, Spaniards came to the island and built a chapel there. They took charge of the management of the island and brought much change and development.[citation needed]