San Mariano, Isabela

San Mariano
Municipality of San Mariano
Aerial view of San Mariano, with Benito Soliven in the foreground and the mighty Cagayan River.
Nickname: 
Rice Bowl of Isabela
Map of Isabela with San Mariano highlighted
OpenStreetMap
San Mariano
Location within the Philippines
Coordinates: 16°59′N 122°01′E / 16.98°N 122.02°E / 16.98; 122.02
CountryPhilippines
RegionCagayan Valley
ProvinceIsabela
District 2nd district
Founded1954
Barangays36 (see Barangays)
Government
  TypeSangguniang Bayan
  MayorEdgar T. Go
  Vice MayorDean Anthony G. Domalanta
  RepresentativeEd Christopher S. Go
  Electorate35,730 voters (2025)
Area
  Total
1,469.50 km2 (567.38 sq mi)
Elevation
102 m (335 ft)
Highest elevation
363 m (1,191 ft)
Lowest elevation
28 m (92 ft)
Population
 (2020 census)
  Total
60,124
  Density41/km2 (110/sq mi)
  Households
14,448
Economy
  Income class1st municipal income class
  Poverty incidence
25.00
% (2021)
  Revenue650.1 million (2022)
  Assets1,558 million (2022)
  Expenditure388.1 million (2022)
  Liabilities233.3 million (2022)
Service provider
  ElectricityIsabela 2 Electric Cooperative (ISELCO 2)
Time zoneUTC+8 (PST)
ZIP code
3332
PSGC
IDD:area code+63(0)78
Native languagesIlocano
Paranan
Tagalog
Websitewww.sanmariano-isabela.org

San Mariano, officially the Municipality of San Mariano; Ilocano: Ili ti San Mariano; Tagalog: Bayan ng San Mariano), is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 60,124 people.