San Guillermo

San Guillermo (Spanish for Saint William), officially the Municipality of San Guillermo, is a 4th class municipality in the province of Isabela, Philippines. According to the 2020 census, it has a population of 20,915 people.

Etymology
The town was named after Eugenio Guillermo, former mayor of Angadanan.

History
On June 17, 1967, the municipality of San Guillermo was created by virtue of Republic Act No. 4906, sponsored by Melanio Singson, the then-representative of Isabela's lone district. It took 15 barangays from Angadanan (i.e. Anonang, Colorado, Calaoagan, Dipacamo, Peredo Edcor, Guam, Nakar, Palawan, Progreso, San Francisco Norte, San Mariano Norte, San Mariano Sur, Villa Rose, Villa Sanchez, and Villa Teresita) and four from Echague (i.e. Aringay, Dingading, San Francisco Sur and Sinalugan).

Due to a noticeable increase in the rate of population migration and potential economic growth, additional barangays were created during the term of Mayor Alvaro Filart, such as barangays Burgos, Dietban, Estrella, Rizal, San Rafael and Villa Remedios. Subsequently, barangay Peredo Edcor was split into two barangays, namely: Centro 1 and Centro 2, which is now the poblacion and the municipality's official seat.

Barangays
San Guillermo is politically subdivided into barangays. Each barangay consists of puroks while some have sitios.


 * Anonang
 * Aringay
 * Burgos
 * Calaoagan
 * Centro 1 (Poblacion)
 * Centro 2 (Poblacion)
 * Colorado
 * Dietban
 * Dingading
 * Dipacamo
 * Estrella
 * Guam
 * Nakar
 * Palawan
 * Progreso
 * Rizal
 * San Francisco Norte
 * San Francisco Sur
 * San Mariano Norte
 * San Mariano Sur
 * San Rafael
 * Sinalugan
 * Villa Remedios
 * Villa Rose
 * Villa Sanchez
 * Villa Teresita

Demographics
In the 2020 census, the population of San Guillermo, Isabela, was 20,915 people, with a density of undefined PD/km2.

Local government
As a municipality in the Province of Isabela, government officials in the provincial level are voted by the electorates of the town. The provincial government have political jurisdiction over local transactions of the municipal government.

The municipality of San Guillermo 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.

Barangays are also headed by elected officials: Barangay Captain, Barangay Council, whose members are called Barangay Councilors. The barangays have SK federation which represents the barangay, headed by SK chairperson and whose members are called SK councilors. All officials are also elected every three years.

Congress representation
San Guillermo, belonging to the sixth legislative district of the province of Isabela, currently represented by Hon. Faustino A. Dy V.

Education
The Schools Division of Isabela governs the town's public education system. The division office is a field office of the DepEd in Cagayan Valley region. The office governs the public and private elementary and public and private high schools throughout the municipality.