Caoayan, Province of Ilocos Sur

Summary data
Typemunicipality
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
Barangay count17
Postal code2702
Coastal/Landlockedcoastal
Marine waterbodiesSouth China Sea
Philippine major island(s)Luzon
Area (2013)17.42 km2 (6.73 sq mi)
Population (2020)19,574
Density (2020)1,124 / km2 (2,908 / sq mi)
Coordinates17° 33' North, 120° 23' East (17.5477, 120.3833)
Estimated elevation above sea level8.0 meters (26.2 feet)

Caoayan is a coastal municipality in the province of Ilocos Sur.

The municipality has a land area of 17.42 square kilometers or 6.73 square miles which constitutes 0.67% of Ilocos Sur's total area. Its population as determined by the 2020 Census was 19,574. This represented 2.77% of the total population of Ilocos Sur province, or 0.37% of the overall population of the Ilocos Region. Based on these figures, the population density is computed at 1,124 inhabitants per square kilometer or 2,908 inhabitants per square mile.

Barangays

Caoayan has 17 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Caoayan
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Anonang Mayor4.89%9581,061-9.71%-2.13%
Anonang Menor5.61%1,09987625.46%4.89%
Baggoc3.96%7757493.47%0.72%
Callaguip4.81%942994-5.23%-1.12%
Caparacadan1.71%335376-10.90%-2.40%
Don Alejandro Quirolgico5.94%1,1631,268-8.28%-1.80%
Don Dimas Querubin5.90%1,1551,00514.93%2.97%
Don Lorenzo Querubin4.81%9411,036-9.17%-2.00%
Fuerte13.67%2,6752,711-1.33%-0.28%
Manangat5.00%9781,038-5.78%-1.25%
Naguilian6.32%1,2381,432-13.55%-3.02%
Nansuagao4.41%86377012.08%2.43%
Pandan6.28%1,2291,291-4.80%-1.03%
Pantay Tamurong9.78%1,9142,020-5.25%-1.13%
Pantay-Quitiquit2.21%4324222.37%0.49%
Puro5.65%1,1061,227-9.86%-2.16%
Villamar9.05%1,7711,58511.74%2.36%
Caoayan Total19,57419,861-1.45%-0.31%

Economy

The annual regular revenue of Caoayan for the fiscal year of 2016 was 90,836,853.07.

details
Annual regular income of Caoayan (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200934,014,932.37
201064,259,878.2588.92%
201156,890,863.54-11.47%
201254,376,510.34-4.42%
201353,016,366.69-2.50%
201443,951,586.95-17.10%
201569,427,239.8857.96%
201690,836,853.0730.84%

End notes:

  • Annual Regular Income = Locally Sourced Revenue + Internal Revenue Allotment (IRA) Current Year + Other Shares from National Tax Collection
  • Locally Sourced Revenue = Real Property Tax (General Fund) + Tax on Business + Other Taxes + Regulatory Fees + Service/User Charges + Receipts from Economic Enterprises

Demographics

Households

The household population of Caoayan in the 2015 Census was 19,861 broken down into 4,604 households or an average of 4.31 members per household.

details
Number of households in Caoayan (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
15,6333,0725.09
15,7983,2194.91
17,1943,5334.87
18,9103,9974.73
18,5504,3114.30
19,8614,6044.31

Population by age group

According to the 2015 Census, the age group with the highest population in Caoayan is 5 to 9, with 1,833 individuals. Conversely, the age group with the lowest population is 75 to 79, with 292 individuals.

details
Population of Caoayan by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 13191.61%
1 to 41,5257.68%
5 to 91,8339.23%
10 to 141,8179.15%
15 to 191,7298.71%
20 to 241,6988.55%
25 to 291,5747.93%
30 to 341,4367.23%
35 to 391,3256.67%
40 to 441,1905.99%
45 to 491,2366.22%
50 to 541,0135.10%
55 to 599074.57%
60 to 646743.39%
65 to 695162.60%
70 to 744282.15%
75 to 792921.47%
80 and over3491.76%
Total19,861100.00%
  • Youth Dependency Ratio: 42.98
  • Old Age Dependency Ratio: 12.4
  • Total Dependency Ratio: 55.38
  • Median Age: 28.21

Historical population

The population of Caoayan grew from 6,201 in 1903 to 19,574 in 2020, an increase of 13,373 people over the course of 117 years. The latest census figures in 2020 denote a negative growth rate of 0.31%, or a decrease of 287 people, from the previous population of 19,861 in 2015.

details
Population of Caoayan (1903‑2020)
Census datePopulationGrowth rate
6,201
7,8601.51%
8,3060.28%
9,0640.90%
11,0451.75%
12,6701.35%
13,3751.09%
14,0701.02%
15,6371.06%
15,7990.19%
17,1991.84%
18,9141.32%
18,551-0.70%
19,8611.31%
19,574-0.31%

The total number of registered voters or electorate in Caoayan for the year 2019 was 13,530, broken down into 6,523 males and 7,007 females.

Location

The municipal center of Caoayan is situated at approximately 17° 33' North, 120° 23' East, in the island of Luzon. Elevation at these coordinates is estimated at 8.0 meters or 26.2 feet above mean sea level.

Distances

Based on the great-circle distance (the shortest distance between two points over the surface of the Earth), the cities closest to Caoayan are Vigan, Ilocos Sur, Candon, Ilocos Sur, Batac, Ilocos Norte, Laoag, Ilocos Norte, San Fernando, La Union, and Tabuk, Kalinga. The nearest municipalities are Bantay, Ilocos Sur, Santa Catalina, Ilocos Sur, San Vicente, Ilocos Sur, San Ildefonso, Ilocos Sur, Santa, Ilocos Sur, and Santo Domingo, Ilocos Sur. Its distance from the national capital is 333.40 kilometers (207.16 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

Distance from Manila: 333.40 kilometers (207.16 miles) to the South (S11°E)

Notes

  1. Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
  2. Data on registered voters is from the Commission on Elections.
  3. Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
  4. Postal code information is from the Philippine Postal Corporation.
(Back to top)