Burgos is a 5th class municipality in the province of La Union, Philippines.

Caba is a fourth class municipality in the province of La Union, Philippines.

Agoo is a first class municipality in the province of La Union, Philippines.

Santol is a 4th class municipality in the province of La Union, Philippines.

Soon thereafter, the provinces of La Union and Abra likewise became independent.

Aringay is a 2nd class municipality in the province of La Union, Philippines.

By 1901 the province of La Union was freed by American occupation.

This area later became a district of the new province of La Union in 1846.

Rosario is a 1st class municipality in the province of La Union, Philippines.

Luna is a 3rd class municipality in the province of La Union, Philippines.