- Tibu City is a municipality in the province of La Union, Philippines. It is located in the northern part of the province and is bordered by the municipality of Naguilian to the north, San Gabriel to the east, Sudipen to the south, and the Lingayen Gulf to the west. The city has a population of approximately 23,000 people as of 2020 and is known for its agricultural industry, particularly in rice production. The city also has several tourist attractions, including beaches and waterfalls, making it a popular destination for local and foreign tourists.