How many barangays are in San Guillermo?▾
San Guillermo has 26 barangays. You can browse the full alphabetical list on this page, with each barangay linking to its own page of officials, contact details, and address.
Where is San Guillermo located?▾
San Guillermo is a municipality in the province of Isabela, in the Cagayan Valley region of the Philippines.
Is San Guillermo a city or municipality?▾
San Guillermo is a municipality in Isabela, Philippines.
What province is San Guillermo in?▾
San Guillermo is located in the province of Isabela, which is part of the Cagayan Valley region of the Philippines.
What is the population of San Guillermo?▾
San Guillermo had a population of 21,043 residents according to the 2024 POPCEN. The municipality contains 26 barangays.
What is the largest barangay in San Guillermo by population?▾
The largest barangay in San Guillermo by population is Brgy. Centro 1 (Pob.) with 2,611 residents. See the ranked list of the most populous barangays on this page.
How do I get a barangay clearance in San Guillermo?▾
To get a barangay clearance in San Guillermo, visit the barangay hall of your residential barangay during office hours (typically Monday to Friday, 8am to 5pm), bring a valid government ID and proof of residency, state your purpose, and pay the processing fee (typically ₱50 to ₱100). Most barangays issue the clearance on the same day. See our complete guide to getting a barangay clearance in the Philippines for detailed step-by-step instructions.
When are the next barangay elections in the Philippines?▾
The next Barangay and Sangguniang Kabataan Elections (BSKE) are scheduled for Monday, November 2, 2026, per COMELEC Resolution No. 11191. All barangay officials across San Guillermo's 26 barangays — including the Punong Barangay, Kagawads, and SK officials — will be elected. Under Republic Act 12232, officials elected will serve a four-year term.
What is the ZIP code of San Guillermo?▾
The ZIP code for San Guillermo is 3308. This Philippine postal code is used for mail delivery across all 26 barangays in the municipality.
What is the income classification of San Guillermo?▾
San Guillermo is classified as a 4th municipality. Income classifications for Philippine local government units are based on the average annual regular income over a rolling period and determine fiscal capacity and administrative structure.
When was this page last updated?▾
The information on this page for San Guillermo was last updated on 2026-05-26. The list of barangays, population figures, and administrative classifications can change over time — always verify directly with the local government unit before relying on this information for official transactions.
