SHIELD
Derived from the Provincial Seal of Isabela where the town is located.
GREEN TRIANGLE
The green color symbolizes growth being an agricultural community.
The triangle signifies the three (3) important factors in agriculture: man, land, and water.
SUN IN TRIANGLE
Emphasizes the importance of sunshine to the town’s agricultural production.
BLUE, RED COLORS
Red implies bravery while blue represents justice and nobility.
LETTER “T”
Stands for “Tomas” the name of the two (2) prominent pioneers of the town after whom Sto. Tomas was named.