Rosario Postal Codes: 2506 | La Union, Ilocos Region

Key Facts

Rosario is a municipality located in the province of La Union within the Ilocos Region of the Philippines. Situated in the northwestern part of Luzon island, Rosario occupies a strategic position along the coastal areas of La Union, bordered by the South China Sea to the west and surrounded by neighboring municipalities. With an approximate population of around 60,000 residents spread across its territory of approximately 73 square kilometers, Rosario serves as an important commercial and agricultural hub in the region. The municipality is administratively divided into 33 barangays, which represent the smallest local government units in the Philippine system. Rosario's economy is primarily driven by agriculture, with rice, corn, and various fruit crops being the main agricultural products, while its coastal location also supports fishing activities. The municipality features a mix of urban and rural landscapes, with the town proper serving as the commercial center while outlying areas maintain their agricultural character. For those seeking to access postal services or send correspondence to specific areas within Rosario, detailed postal code information is available for each of its constituent barangays to ensure accurate mail delivery throughout the municipality.

Neighboring Regions

• Agoo
• Pugo
• Tubao
• Santo Tomas