Pamplona is a municipality in the Philippine province of Cagayan and is located in the north of the province on the Philippine Sea . In 2015, 23,596 people lived in the 171.7 km² area, resulting in a population density of 137 inhabitants per km². In the south, the municipality borders on Luna in the province of Apayao , in the east on Abulug and in the west on Sanchez-Mira .
Pamplona was created in 1844 by merging the two places Abulacan and Masi . The native inhabitants of the area are the Ibanag , but they are increasingly being displaced by the Ilokanos .
Pamplona is divided into the following 18 barangays :
