Caoayan
Municipality in the Philippines
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Caoayan, officially the Municipality of Caoayan, is a 4th class municipality in the province of Ilocos Sur, Philippines. According to the 2020 census, it has a population of 19,574 people. Wikipedia
ZIP code: 2702
Mayor: Germelina Singson-Goulart
Barangays: 17 (see Barangays)
District: 1st district
IDD: area code: +63 (0)77
Native languages: Ilocano; Tagalog
Province: Ilocos Sur