Isabela · Cagayan Valley
26 Barangays in San Guillermo
San Guillermo is a municipality in Isabela with 26 barangays. Click any barangay to view its contact details, address, and officials.
Population & Statistics
From the 2020 Census of Population and Housing
- Total Population (2020)
- 20,915
- Population (2015)
- 20,200
- Growth (2015→2020)
- +3.5%
- Avg. per barangay
- 804
Income classification: 4th
Most Populous Barangays in San Guillermo
- 1.Brgy. Centro 1 (Pob.) — 2,575
- 2.Brgy. Centro 2 (Pob.) — 2,370
- 3.Brgy. Rizal — 1,440
- 4.Brgy. Guam — 1,147
- 5.Brgy. Colorado — 1,078