Rosario, La Union

Rosario
Municipality of Rosario
La Union Welcome Arch, Immaculate Conception Parish Church and Town Proper
Map of La Union with Rosario highlighted
Interactive map of Rosario
Rosario
Location within the Philippines
Coordinates: 16°14′N 120°29′E / 16.23°N 120.48°E / 16.23; 120.48
CountryPhilippines
RegionIlocos Region
ProvinceLa Union
District 2nd district
Founded1869
Barangays33 (see Barangays)
Government
 • TypeSangguniang Bayan
 • MayorBellarmin A. Flores II
 • Vice MayorBellarmin C. Flores III
 • RepresentativeDante S. Garcia
 • Municipal Council
Members
  • Joseph S. Heruela
  • Jan Michael G. Viray
  • Allan S. Sabangan
  • Cesario T. Licos
  • Apolinario T. Albay Jr.
  • Felix T. Madriaga
  • Rose Lily S. Fuentes
  • Raul C. Flores
 • Electorate38,187 voters (2025)
Area
 • Total
73.98 km2 (28.56 sq mi)
Elevation
202 m (663 ft)
Highest elevation
945 m (3,100 ft)
Lowest elevation
28 m (92 ft)
Population
 (2024 census)
 • Total
58,797
 • Density794.8/km2 (2,058/sq mi)
 • Households
14,433
Economy
 • Income class1st municipal income class
 • Poverty incidence
10.67
% (2021)
 • Revenue₱ 364.2 million (2022)
 • Assets₱ 767.6 million (2022)
 • Expenditure₱ 248.4 million (2022)
 • Liabilities₱ 137.2 million (2022)
Service provider
 • ElectricityLa Union Electric Cooperative (LUELCO)
Time zoneUTC+8 (PST)
ZIP code
2506
PSGC
IDD:area code+63 (0)72
Native languagesIlocano
Pangasinan
Tagalog

Rosario, officially the Municipality of Rosario (Ilocano: Ili ti Rosario; Pangasinan: Baley na Rosario; Filipino: Bayan ng Rosario), is a coastal municipality in the province of La Union, Philippines. According to the 2024 census, it has a population of 58,797 people.

Located at the southernmost tip of La Union, Rosario is known as the "Gateway to Ilocandia" and serves as the terminus of the Tarlac–Pangasinan–La Union Expressway (TPLEX), making it a vital transit hub connecting Central Luzon to Northern Luzon.