Calanasan

Calanasan Bayag
Municipality
Municipality of Calanasan
Municipal Hall (Balay daya Ymandaya Bldg.)
Flag Seal
Map of Apayao with Calanasan highlighted
Interactive map of Calanasan
Calanasan Location in the Philippines
Coordinates: 18°15′18″N 121°02′37″E
Country	Philippines
Region	Cordillera Administrative Region
Province	Apayao
District	Lone district
Founded	June 25, 1963
Barangays	18 (see Barangays)
Government
• Type	Sangguniang Bayan
• Mayor	Shamir M. Bulut (NP)
• Vice Mayor	Martin Lucero B. Lawat (NP)
• Representative	Eleanor Bulut-Begtang
• Municipal Council	Members Florante T. Parandit Jordy M. Allag Harold Cliff L. Danggan Vernie S. Batil Rodante B. Labueng Irene U. Iddaro Gerry M. Andres Scott L. Sucbot
• Electorate	9,061 voters (2025)
Area
• Total	1,256.15 km2 (485.00 sq mi)
Elevation	554 m (1,818 ft)
Highest elevation	1,220 m (4,000 ft)
Lowest elevation	258 m (846 ft)
Population  (2024 census)
• Total	12,176
• Density	9.6931/km2 (25.105/sq mi)
• Households	2,607
Economy
• Income class	1st municipal income class
• Poverty incidence	7.64 % (2023)
• Revenue	₱ 593.7 million (2024)
• Assets	₱ 1,197 million (2024)
• Expenditure	₱ 356.2 million (2024)
• Liabilities	₱ 92.1 million (2024)
Service provider
• Electricity	Kalinga - Apayao Electric Cooperative (KAELCO)
Time zone	UTC+8 (PST)
ZIP code	3814
PSGC	1408101000
IDD : area code	+63 (0)74
Native languages	Isnag Ilocano Tagalog

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Calanasan, officially the Municipality of Calanasan, (Isnag: Ili naya Calanasan; Ilocano: Ili ti Calanasan; Tagalog: Bayan ng Calanasan), (formerly known as Bayag, meaning "slow") is a municipality in the province of Apayao, Philippines. According to the 2024 census, it has a population of 12,176 people.

The town is the source of the Apayao River which empties into the West Philippine Sea and is the only navigable river in Apayao.