DEMOGRAPHIC PROFILE 
- Largest Municipality in the Province as to land area. 17,553 has (90% mountainous)
- 282 kms. North of Manila and 22 kms. from the City of San Fernando, La Union
- Boundary:
- North- Municipality of Santol/Province of Ilocos Sur
- East- Province of Benguet
- Southeast – Municipality of Bagulin
- Southwest- Municipality of San Juan
- West- Municipality of Bacnotan
- 15 Barangays
- 3 lowland
- 12 upland
SOCIAL PROFILE
- Population: 19,344
- Urban Population: 17.82%
- Rural Population: 82.18%
- Households: 4,174
- Families: 5,068
- Number of Schools
- Child Development Centers – 24
- Elementary – 14
- High School – 5
- with SHS – 3
TRADE AND INDUSTRY
- Main source of income is Agriculture.
- Products
- Rice
- Vegetables
- Root crops
- Fruits
- Legumes
- Softbroom
- OTOP – Softbroom
- San Gabriel is the biggest producer of Softbroom in the Province of La Union with annual production of 1500 metric tons
- IRA of 2019: 84,099,721.00
- Local income (in peso):
- 2018 – 7,276,059.93
- 2019 – 7,828,432.94