The Philippines is divided into three island groups: Luzon, Visayas, and Mindanao. These are divided into 17 regions, 81 provinces, 144 cities, 1,491 municipalities, and 42,028 barangays.
In addition, Section 2 of Republic Act No. 5446 asserts that the definition of the territorial sea around the Philippine archipelago does not affect the claim over the eastern part of Sabah.