Kalpana Kalpana (Editor)

San Ildefonso, Ilocos Sur

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Country  Philippines
District  1st District
Barangays  15
Area  11.35 km²
Province  Ilocos Sur
Region  Ilocos (Region I)
Founded  March 1625
Time zone  PST (UTC+8)
Local time  Tuesday 5:56 AM
San Ildefonso, Ilocos Sur
Weather  24°C, Wind E at 3 km/h, 88% Humidity

Bp bahay sa san ildefonso ilocos sur nasunog dahil umano sa nag overheat na bentilador

San Ildefonso is a fifth class municipality in the province of Ilocos Sur, Philippines. According to the 2015 census, it has a population of 7,787 people.


Map of San Ildefonso, Ilocos Sur, Philippines

The town is rich in rice, corn, sugarcane, malunggay, katuday & fruit-bearing trees such as star apple, chico, mango, camachile & atis. Its main product is basi, a wine made from fermented sugarcane juice; as well as cane vinegar. They also make nutritious ice cream made up of vegetables in Barangay Bungro, and is being popularized by the town's local government.

Trip lang san ildefonso ilocos sur 1 3


San Ildefonso is located south of Santo Domingo, west of Bantay, east of San Vicente & Sto. Domingo and north of Bantay.


San Ildefonso is politically subdivided into 15 barangays.

  • Arnap
  • Bahet
  • Belen
  • Bungro
  • Busiing Sur
  • Busiing Norte
  • Dongalo
  • Gongogong
  • Iboy
  • Kinamantirisan
  • Otol-Patac
  • Poblacion East
  • Poblacion West
  • Sagneb
  • Sagsagat
  • Etymology

    San Ildefonso, like many other places in the provinces at the beginning of the Spanish Regime, did not have a name. Sometime in 1625, its inhabitants decided to give it a name, but nothing came out after more than five hours of discussions. So while thinking of a name, they decided to go fishing for a week. And while preparing to go fishing, they saw a box floating not far from shore. Wading to reach the box and carrying it ashore, they opened the box to find a statue of Saint Ildephonsus. The young women of the place carried the statue to the center of the village, where it was enshrined in a small hut for many years. He became the patron saint of the municipality, and his name was decided to become the name of the fledgling municipality.

    San Ildefonso was a former rancheria of Bantay before it became a municipality, but because of its size it was annexed to Santo Domingo as a barrio. In 1921, Assemblyman (and future Philippine president) Elpidio Quirino worked to convert San Ildefonso into a municipality again.


    In the 2015 census, the population of San Ildefonso, Ilocos Sur, was 7,787 people, with a density of 690 inhabitants per square kilometre or 1,800 inhabitants per square mile.

    Local government

    Municipal Officials Year 2000-2013:

  • Mayor: Mark Anthony A. Purisima
  • Vice Mayor: RoBert Castillo
  • Sanguniang Bayan Members:
  • Rosario Castillo
  • Quirino Dela Cruz
  • Mely Dela Cruz
  • Jay-ar Riego
  • Renato Pecho
  • Romeo Palomares
  • Minda Padua
  • Maraino Pamo Jr.
  • ABC Pres. Efren Pula
  • Educational institutions

  • Belen National High School
  • San Ildefonso Central School
  • Bungro Elementary School
  • Sagsagat Elementary School
  • Busiing Community School
  • Philippine Science High School [Ilocos Region Campus] (PSHS-IRC)
  • Day Care Centers (different barangays)
  • 200th Anniversary of Basi Revolt

    On September 28, 2007, San Ildefonso officials (Governor Deogracias Victor Savellano and Rep. Ronald Singson) commemorated the Basi Revolt. Recently, the Sangguniang Bayan of San Ildefonso approved a resolution declaring September 16 as a non-working holiday and named the old road in Barangay Gongogong as Ambaristo street in honor of Pedro Ambaristo, leader of the Basi Revolt. Mayor Christian Purisima enrolled basi as their entry into the “One Town; One Product” (OTOP) program of Governor Savellano.


    San Ildefonso, Ilocos Sur Wikipedia

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