Santo Domingo, Ilocos Sur

Santo Domingo
Municipality of Santo Domingo
St. Dominic of Guzman Parish Church of Santo Domingo
Motto: 
Arangkada Todo-Todo, Santo Domingo
Map of Ilocos Sur with Santo Domingo highlighted
Interactive map of Santo Domingo
Santo Domingo
Location within the Philippines
Coordinates: 17°38′29″N 120°24′39″E / 17.6414°N 120.4108°E / 17.6414; 120.4108
CountryPhilippines
RegionIlocos Region
ProvinceIlocos Sur
District 1st district
Named afterSaint Dominic
Barangays36 (see Barangays)
Government
 • TypeSangguniang Bayan
 • MayorBryan Dexter V. Tadena
 • Vice MayorMichael Emili V. Figueras
 • RepresentativeDeogracias Victor B. Savellano
 • Municipal Council
Members
  • Cristina Jane G. de Vera
  • Rizaldy S. Rosario
  • Eugene R. Tadeja
  • Godofredo T. Ingan
  • Henry Q. Palpal-Latoc
  • Joan T. Tabangcura
  • Luciano F. Manuel
 • Electorate20,229 voters (2025)
Area
 • Total
55.49 km2 (21.42 sq mi)
Elevation
17 m (56 ft)
Highest elevation
185 m (607 ft)
Lowest elevation
0 m (0 ft)
Population
 (2024 census)
 • Total
29,372
 • Density529.3/km2 (1,371/sq mi)
 • Households
7,346
Economy
 • Income class3rd municipal income class
 • Poverty incidence
16.53
% (2021)
 • Revenue₱ 286.2 million (2022)
 • Assets₱ 1,156 million (2022)
 • Expenditure₱ 193.8 million (2022)
 • Liabilities₱ 59.56 million (2022)
Service provider
 • ElectricityIlocos Sur Electric Cooperative (ISECO)
Time zoneUTC+8 (PST)
ZIP code
2729
PSGC
IDD:area code+63 (0)77
Native languagesIlocano
Tagalog
Websitewww.stodomingo-ilocossur.gov.ph

Santo Domingo, officially the Municipality of Santo Domingo (Ilocano: Ili ti Santo Domingo; Filipino: Bayan ng Santo Domingo), is a municipality in the province of Ilocos Sur, Philippines. According to the 2024 census, it has a population of 29,372 people.