| Flag Size: | 120x80px | ||
| Seal Size: | 100x80px | ||
| Image Map1: |
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| Pushpin Map: | Philippines | ||
| Pushpin Label Position: | left | ||
| Pushpin Map Caption: | Location within the | ||
| Subdivision Type: | Country | ||
| Subdivision Name: | Philippines | ||
| Subdivision Type1: | Region | ||
| Subdivision Type2: | Province | ||
| Named For: | Saint Ildefonsus | ||
| Motto: | Progreso San Ildefonso! (Progress San Ildefonso) | ||
| Subdivision Type3: | District | ||
| Established Title: | Founded | ||
| Established Date: | March 1625 | ||
| Parts Type: | Barangays | ||
| Parts Style: | para | ||
| P1: | (see Barangays) | ||
| Leader Name: | Christian Daniel A. Purisima | ||
| Leader Title1: | Vice Mayor | ||
| Leader Name1: | Robert R. Riego | ||
| Leader Name2: | Deogracias Victor B. Savellano | ||
| Leader Title3: | Municipal Council | ||
| Leader Title4: | Electorate | ||
| Leader Name4: | voters (electorate_point_in_time}}|) | ||
| Elevation Max M: | 47 | ||
| Elevation Min M: | 0 | ||
| Population Density Km2: | auto | ||
| Population Blank1 Title: | Households | ||
| Timezone: | PST | ||
| Utc Offset: | +8 | ||
| Postal Code Type: | ZIP code | ||
| Demographics Type1: | Economy | ||
| Demographics1 Title2: | Poverty incidence | ||
| Demographics1 Info2: | % | ||
| Demographics1 Title3: | Revenue | ||
| Demographics1 Title4: | Revenue rank | ||
| Demographics1 Title5: | Assets | ||
| Demographics1 Title6: | Assets rank | ||
| Demographics1 Title7: | IRA | ||
| Demographics1 Title8: | IRA rank | ||
| Demographics1 Title9: | Expenditure | ||
| Demographics1 Title10: | Liabilities | ||
| Demographics Type2: | Service provider | ||
| Demographics2 Title1: | Electricity | ||
| Demographics2 Title2: | Water | ||
| Demographics2 Title3: | Telecommunications | ||
| Demographics2 Title4: | Cable TV | ||
| Blank1 Name Sec1: | Native languages | ||
| Blank2 Name Sec1: | Crime index | ||
| Blank1 Name Sec2: | Major religions | ||
| Blank2 Name Sec2: | Feast date | ||
| Blank3 Name Sec2: | Catholic diocese | ||
| Blank4 Name Sec2: | Patron saint | ||
San Ildefonso, officially the Municipality of San Ildefonso (Iloko: Ili ti San Ildefonso; Filipino; Pilipino: Bayan ng San Ildefonso), is a 5th class municipality in the province of Ilocos Sur, Philippines. According to the 2020 census, it has a population of 8,190 people.
The town got its name from Saint Ildephonsus.
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.
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.[1]
San Ildefonso is from Metro Manila and from Vigan City, the provincial capital.
San Ildefonso is politically subdivided into 15 barangays. Each barangay consists of puroks and some have sitios.
In the 2020 census, San Ildefonso had a population of 8,190. The population density was NaN8,190/11.35.
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.
See main article: Sangguniang Bayan. San Ildefonso, belonging to the first congressional district of the province of Ilocos Sur, is governed by a mayor designated as its local chief executive and by a municipal council as its legislative body in accordance with the Local Government Code. The mayor, vice mayor, and the councilors are elected directly by the people through an election which is being held every three years.
| Position | Name |
|---|---|
| Congressman | Deogracias Victor B. Savellano |
| Mayor | Christian Daniel A. Purisima |
| Vice-Mayor | Robert R. Riego |
| Councilors | Nona T. Purisima |
| Mariano M. Pamo Jr. | |
| Luzminda D. Padua | |
| Nelson T. Retreta | |
| Efren J. Pola | |
| Renato P. Pecho | |
| Richard A. Palomares | |
| Cesar R. Revibes | |