San Agustin, Isabela

San Agustin
Municipality of San Agustin
Nickname: 
Crossbred Capital of the Philippines
Map of Isabela with San Agustin highlighted
OpenStreetMap
San Agustin
Location within the Philippines
Coordinates: 16°31′N 121°45′E / 16.52°N 121.75°E / 16.52; 121.75
CountryPhilippines
RegionCagayan Valley
ProvinceIsabela
District 4th district
Named afterSt. Augustine of Hippo
Barangays23 (see Barangays)
Government
  TypeSangguniang Bayan
  MayorCesar A. Mondala
  Vice MayorOliver D. Micu
  RepresentativeJoseph S. Tan
  Electorate15,378 voters (2025)
Area
  Total
278.40 km2 (107.49 sq mi)
Elevation
125 m (410 ft)
Highest elevation
309 m (1,014 ft)
Lowest elevation
84 m (276 ft)
Population
 (2020 census)
  Total
22,096
  Density79/km2 (210/sq mi)
  Households
5,544
Economy
  Income class3rd municipal income class
  Poverty incidence
11.83
% (2021)
  Revenue195.3 million (2022)
  Assets410 million (2022)
  Expenditure143.9 million (2022)
  Liabilities42.87 million (2022)
Service provider
  ElectricityIsabela 1 Electric Cooperative (ISELCO 1)
Time zoneUTC+8 (PST)
ZIP code
3314
PSGC
IDD:area code+63(0)78
Native languagesIlocano
Bugkalot
Tagalog
Websitewww.sanagustin-isabela.gov.ph

San Agustin, officially the Municipality of San Agustin (Ilocano: Ili ti San Agustin; Tagalog: Bayan ng San Agustin), is a municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 22,096 people.