Alfonso Castañeda

Alfonso Castañeda
Municipality of Alfonso Castañeda
Downtown area
Nickname: 
Last Frontier of Nueva Vizcaya
Map of Nueva Vizcaya with Alfonso Castañeda highlighted
OpenStreetMap
Alfonso Castañeda
Location within the Philippines
Coordinates: 15°47′36″N 121°18′09″E / 15.7933°N 121.3025°E / 15.7933; 121.3025
CountryPhilippines
RegionCagayan Valley
ProvinceNueva Vizcaya
District Lone district
FoundedJuly 10, 1979
Barangays6 (see Barangays)
Government
  TypeSangguniang Bayan
  MayorWilson M. Capia-ao
  Vice MayorEvelinda D. Huerta
  RepresentativeLuisa L. Cuaresma
  Electorate6,866 voters (2025)
Area
  Total
375.40 km2 (144.94 sq mi)
Elevation
430 m (1,410 ft)
Highest elevation
1,079 m (3,540 ft)
Lowest elevation
169 m (554 ft)
Population
 (2020 census)
  Total
8,539
  Density23/km2 (59/sq mi)
  Households
1,795
Economy
  Income class1st municipal income class
  Poverty incidence
15.14
% (2021)
  Revenue194.2 million (2022)
  Assets450.3 million (2022)
  Expenditure183.6 million (2022)
  Liabilities72.57 million (2022)
Service provider
  ElectricityNueva Vizcaya Electric Cooperative (NUVELCO)
Time zoneUTC+8 (PST)
ZIP code
3714
PSGC
IDD:area code+63(0)78
Native languagesIlocano
Tagalog
Websitehttps://acasnv.gov.ph

Alfonso Castañeda, officially the Municipality of Alfonso Castañeda (Ilocano: Ili ti Alfonso Castañeda; Tagalog: Bayan ng Alfonso Castañeda), is a municipality in the province of Nueva Vizcaya, Philippines. According to the 2020 census, it has a population of 8,539 people, making it the least populated municipality in the province.