Sigay, Province of Ilocos Sur

Summary data
Typemunicipality
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
Barangay count7
Postal code2719
Coastal/Landlockedlandlocked
Marine waterbodiesnone (landlocked)
Philippine major island(s)Luzon
Area (2013)81.55 km2 (31.49 sq mi)
Population (2020)2,552
Density (2020)31 / km2 (81 / sq mi)
Coordinates17° 3' North, 120° 35' East (17.0429, 120.5795)
Estimated elevation above sea level531.9 meters (1,744.7 feet)

Sigay is a landlocked municipality in the coastal province of Ilocos Sur.

The municipality has a land area of 81.55 square kilometers or 31.49 square miles which constitutes 3.14% of Ilocos Sur's total area. Its population as determined by the 2020 Census was 2,552. This represented 0.36% of the total population of Ilocos Sur province, or 0.05% of the overall population of the Ilocos Region. Based on these figures, the population density is computed at 31 inhabitants per square kilometer or 81 inhabitants per square mile.

Barangays

Sigay has 7 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Sigay
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Abaccan8.31%212254-16.54%-3.73%
Mabileg12.34%315327-3.67%-0.78%
Matallucod8.82%225278-19.06%-4.35%
Poblacion11.95%305335-8.96%-1.96%
San Elias18.22%465481-3.33%-0.71%
San Ramon21.04%537601-10.65%-2.34%
Santo Rosario19.32%4934616.94%1.42%
Sigay Total2,5522,737-6.76%-1.46%

Economy

The annual regular revenue of Sigay for the fiscal year of 2016 was 38,449,407.40.

details
Annual regular income of Sigay (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200925,560,573.17
201061,103,463.69139.05%
201162,447,460.252.20%
201251,124,803.66-18.13%
201352,198,194.172.10%
201430,754,965.21-41.08%
201534,881,059.0413.42%
201638,449,407.4010.23%

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 Sigay in the 2015 Census was 2,737 broken down into 515 households or an average of 5.31 members per household.

details
Number of households in Sigay (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,9643405.78
2,2353775.93
2,3754085.82
2,4524455.51
2,4164665.18
2,7375155.31

Population by age group

According to the 2015 Census, the age group with the highest population in Sigay is 20 to 24, with 273 individuals. Conversely, the age group with the lowest population is 70 to 74, with 38 individuals.

details
Population of Sigay by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1582.12%
1 to 42047.45%
5 to 92679.76%
10 to 142027.38%
15 to 192238.15%
20 to 242739.97%
25 to 292539.24%
30 to 342338.51%
35 to 391716.25%
40 to 441435.22%
45 to 491144.17%
50 to 541354.93%
55 to 591405.12%
60 to 641063.87%
65 to 69662.41%
70 to 74381.39%
75 to 79451.64%
80 and over662.41%
Total2,737100.00%
  • Youth Dependency Ratio: 40.82
  • Old Age Dependency Ratio: 12
  • Total Dependency Ratio: 52.82
  • Median Age: 27.80

Historical population

The population of Sigay grew from 11 in 1903 to 2,552 in 2020, an increase of 2,541 people over the course of 117 years. The latest census figures in 2020 denote a negative growth rate of 1.46%, or a decrease of 185 people, from the previous population of 2,737 in 2015.

details
Population of Sigay (1903‑2020)
Census datePopulationGrowth rate
11
1,03633.25%
1,6552.37%
1,571-0.53%
1,371-1.19%
1,4750.72%
1,5711.27%
1,7412.08%
1,9641.21%
2,2352.45%
2,3751.31%
2,4530.45%
2,419-0.51%
2,7372.38%
2,552-1.46%

The total number of registered voters or electorate in Sigay for the year 2019 was 2,107, broken down into 1,145 males and 962 females.

Location

The municipal center of Sigay is situated at approximately 17° 3' North, 120° 35' East, in the island of Luzon. Elevation at these coordinates is estimated at 531.9 meters or 1,744.7 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 Sigay are Candon, Ilocos Sur, Vigan, Ilocos Sur, San Fernando, La Union, Baguio, Tabuk, Kalinga, and Batac, Ilocos Norte. The nearest municipalities are Gregorio del Pilar, Ilocos Sur, Quirino, Ilocos Sur, Salcedo, Ilocos Sur, Suyo, Ilocos Sur, Cervantes, Ilocos Sur, and Santa Cruz, Ilocos Sur. Its distance from the national capital is 278.23 kilometers (172.88 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

  • Candon, Ilocos Sur, 21.11 kilometers (13.12 miles) to the Northwest (N54°W)
  • Vigan, Ilocos Sur, 59.54 kilometers (37.00 miles) to the North‑Northwest (N23°W)
  • San Fernando, La Union, 59.93 kilometers (37.24 miles) to the South‑Southwest (S31°W)
  • Baguio, 73.86 kilometers (45.89 miles) to the South (S1°W)
  • Tabuk, Kalinga, 101.03 kilometers (62.78 miles) to the East‑Northeast (N64°E)
  • Batac, Ilocos Norte, 108.28 kilometers (67.28 miles) to the North (N3°W)

Distance from Manila: 278.23 kilometers (172.88 miles) to the South (S8°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.
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