In the 2000 Census of Population and Housing, Hilongos registered its second lowest growth rate of 0.28% since population census was first undertaken in the year 1903.The lowest was registered in the census of year 1960 with 0.05% from its population of year 1948.In 2000, Hilongos has 10,763 households, an increase of 6.96% from its 1995 figure of 10, 062 with an average household size of five persons.Several years before the 12th century, a nomadic tribe from Iloilo came to the place by accident as they were pursued by some warlike Malayan sailors. This place has been called "Ilong" an adoption based obviously on thename of the Ilongot tribe.Other stories, however, had claimed that Hilongos is a corruption of the words "ilong and lomos", the later referring to the frequent drowning at the nearby Salogriver.It was sometime in the 12th century when Hilongos become highly popular. Amahawin, a powerful barangay chieftain, conquered the neighboring barangays, thereby extending his territory to what is now the towns of Inopacan, Hindang, Bato and Matalom.At present, Hilongos anticipates to deal with new opportunities, new challenges as it recognizes its lofty position in this southwestern part of Leyte being thefastest growing municipality in terms of income and population. Hilongos will face the challenge with a vision - A development-oriented government working hand-in- hand with the residents to produce justly distributed improvements in the quality of life of all.

Hilongos leyte composed of 51 barangays;
Agutayan -Atabay
Baas -Bagumbayan
Baliw -Bantigue
Bung-aw -Cacao
Campina -Catandog 1
Catandog 2 -Concepcion

Himo-aw -Hitudpan
Imelda Marcos (Pong-on)
Kang-iras -Lamak
Libertad -Liberty
Lunang -Magnangoy
Marangog -Matapay
Naval -Owak
Pa-a
Central Barangay (Pob.) -Eastern Barangay (Pob.)
Western Barangay (Pob.)
Pontod -Proteccion
San Agustin -San Antonio
San Isidro -San Juan
San Roque -Santa Cruz
Santa Margarita -Santo Niño
Tabunok -Tagnate
Talisay -Tambis
Tejero -Tuguipa
Utanan -Bagong Lipunan
Bon-ot -Hampangan
Kangha-as -Manaul