Around the early and mid-19th century, as the population of the villages increased due to the steady immigration of Ilocanos from the Ilocandia region, more pueblos were organized.

The other waves of Ilocano settlers, who were mostly merchants and fishermen, came from Vigan and San Vincente, Ilocos Sur.

The pueblo was later transferred from Sindol to Bobulon because the latter was already more populated, had a wider area for residential purposes, and it was farther from the mountains were the aetas, still wild lived.

The town was affected by the 1991 Mount Pinatubo eruption, being buried in about a meter in volcanic ash but damage was comparatively light.

In 2017, however, they started to reforest the barren collage portion thereof with 62,000 trees based on green economy per agroforestry to deter climate change.

The Philippine forest trees planted include parkia timoriana, narra, yakal, tibig, calamansi, cashew, bamboo, jackfruit, tamarind, palosapis, lauan and firewood madre de cacao.

The tribes were assisted by the NCIP Zambales office, San Felipe LGU, 2 Aeta tribal chief, Indigenous Peoples Municipal Representative, People's Organization leader, the Bukidnon Talaandig tribe, the Hineleban Foundation and Circle Hostel.

The community also learned to plant with biochar using flammable grass and wood to develop water storing soil enhancers.

The Cathedral of San Roque (Saint Roch in English), the episcopal see of the Zambales diocese of the Philippine Independent Church is located next to the plaza.

The local parish of the Catholic Church is also dedicated to San Roque and was staffed by the Columban Fathers until recent years.