Palmira district was known as "Boquerones" (Anchovies), it has a population of 3974 inhabitants in an area of 37.1 km2.
Sardinal district formerly called "Tamarindo" (Tamarind), it is one of the oldest towns, has an area of 240.4 km2 and a population of 10 118 inhabitants, and it is the largest in population and territory of the canton.