Bacnotan is a first class municipality in the province of La Union, Philippines. According to the 2007 census, it has a population of 38,743 people in 7,183 households.
Ilocano is the language spoken. English and Filipino are the languages used in government and business while English is the medium of instruction in schools.
Economic activities in Bacnotan mostly involve farming, fishing, bee-keeping, pebble extraction, tourism and Portland cement manufacture. Bacnotan is the seat of the beekeeping industry in La Union. A mining engineer from Bacnotan who saw the limestone deposits in Dumarang (renamed Quirino) also saw deposits of coal and traces of gas.
Schools in Bacnotan include the Don Mariano Marcos Memorial State University, the North Provincial High School (now Bacnotan National High School), the Bacnotan Elementary School, other elementary schools located in various barangays, and a prep school operated by the United Church of Christ in the Philippines in Bacnotan.
Bacnotan can be reached from Manila using the MacArthur Highway, or via plane landing in Canaoay Airport in San Fernando City.

Bagulin is a 5th class municipality in the province of La Union, Philippines. According to the latest census, it has a population of 12,521 people in 2,171 households.

MUNICIPALITIES

There is a total of 19 municipalities and 1 city converged together in the province of La Union. The municipalities include Agoo, Aringay, Bacnotan, Bagulin, Balaoan, Bangar, Bauang, Burgos, Caba, Luna, Naguilian, Pugo, Rosario, San Gabriel, San Juan, Sto. Tomas, Santol, Sudipen, and Tubao. The single city found in the province of La Union is San Fernando City.

Aringay is a 2nd class municipality in the province of La Union, Philippines. According to the latest census, it has a population of 43,438 people in 7,786 households.
Its boundaries are formed by the municipalities of Caba and Burgos to the north, Agoo to the south, the foothills of the Cordillera Central mountain range to the east, and the South China Sea to the west. Aringay belongs to District 2 in the province.
The town experiences the prevailing monsoon climate of Northern Luzon, characterized by a dry season from November to April and a wet season from May to October. Its economy is based primarily on agriculture, producing rice, tobacco and fruit crops as economic staples. A nascent tourism industry is centered on its beach resorts. Its ethnic population is predominantly Ilocano and Christian (Roman Catholic).

Agoo is a first class municipality in the province of La Union, Philippines. According to the latest census, it has a population of 57,952 people in 9,945 households.
Its name is usually attributed to "aroo" or "agoho," a pine-like evergreen tree (Casuarina equisetifolia or Whistling Pine) that thrived in the western coast during the pre-Spanish Period.

Caba is a 4th class municipality in the province of La Union, Philippines. Caba is the birthplace of Diego Silang. According to the latest census, it has a population of 20,927 people in 3,880 households.
Caba was a part of the municipality of Aringay until the late-19th century when it was permanently separated to form its own entity.

Luna is a 3rd class municipality in the province of La Union, Philippines. According to the latest census, it has a population of 35,372 people in 6,561 households.