Paracelis was first settled by the Ga'dang (
Gaddang) ethnic group, who were migrants from
Cagayan Valley. Through the years, Paracelis has become the main entry point to the rest of Mountain Province. The name Paracelis came into existence as early as the 1900s as part of the territorial
barangays of Natonin within the District of Kalao. Paracelis became a regular town named Paracales with the enactment of Republic Act 3488 on June 16, 1962. The town was renamed Paracelis on June 18, 1966 under Republic Act 4738. The first appointed mayor was Benito Rafael. The first official site of the civil government was at Natta'longan, now currently within Barangay Bantay. The pre-
World War II government was short-lived and administration lasted under three local managements from 1917 to 1921. In 1962, the government center at Natta'longan was transferred to Anangka within the Rafael compound. The site was again transferred to a lot in Marat donated by the Gawwan family. In 1991, the officials of the municipal government transferred the government center to its current site in Poblacion. The government used to occupy a one-hectare lot that housed all the units. On December 25, 2007, the town's mayor, Cesar Rafael, was killed in an ambush in sitio Sinigpit, Barangay Butigue. Paracelis is currently a
melting pot of migrants from different areas, such as the Gaddang, Balangao, Majukayong,
Kalinga, and
Ifugao tribes, including Ilokanos. This migration has been instrumental on the fast rising urbanization of Paracelis in the last two decades. The town's current administration is introducing an urbanization plan for the municipality. ==Geography==