Caoayan, Ilocos
Caoayan: Municipality of the Philippines in the province of Ilocos Sur
About
Quick Facts about Caoayan
| Population : | 19,861 |
| Country : | Philippines |
| State : | Ilocos (Philippines) |
| County : | Province of Ilocos Sur |
| Head of government : | mayor |
| Postal code : | 2702 |
| Phone Area Codes : | 77 |
| Area : | 17.42 km2 |
| Official name : | Municipality of Caoayan |
| Time Zone : | UTC+08:00 |
| Local time : | 19:12:43 (6th December 2025) |
Geography
Caoayan is located at 17°32'16"N 120°23'56"E (17.5377600, 120.3989900).
Caoayan map
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- Official Website
Official website of Caoayan
Demographics
| Year | Population | % Change | Method |
| 1903 | 6,201 | - | census |
| 1918 | 7,860 | 21.11% | census |
| 1939 | 8,306 | 5.37% | census |
| 1948 | 9,064 | 8.36% | census |
| 1960 | 11,045 | 17.94% | census |
| 1970 | 12,670 | 12.83% | census |
| 1975 | 13,375 | 5.27% | census |
| 1980 | 14,070 | 4.94% | census |
| 1990 | 15,637 | 10.02% | census |
| 1995 | 15,799 | 1.03% | census |
| 2000 | 17,199 | 8.14% | census |
| 2007 | 18,914 | 9.07% | census |
| 2010 | 18,551 | -1.96% | census |
| 2015 | 19,861 | 6.6% | census |
Bayan ng Caoayan, Caoayan
