Ivisan is politically subdivided into 15 barangays.

• Agmalobo
• Agustin Navarra
• Balaring
• Basiao
• Cabugao
• Cudian
• Ilaya-Ivisan
• Malocloc Norte
• Malocloc Sur
• Matnog
• Mianay
• Ondoy
• Poblacion Norte
• Poblacion Sur
• Santa Cruz

The current mayor is Felipe Yap who won in the last 2007 elections. He is the brother of former Ivisan mayor Noel Yap (who finished all three terms) and the son of former mayor Amelia Yap.