Sinait, Province of Ilocos Sur

Summary data
Typemunicipality
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
Barangay count44
Postal code2733
Coastal/Landlockedcoastal
Marine waterbodiesSouth China Sea
Philippine major island(s)Luzon
Area (2013)65.56 km2 (25.31 sq mi)
Population (2020)25,998
Density (2020)397 / km2 (1,027 / sq mi)
Coordinates17° 52' North, 120° 27' East (17.8664, 120.4561)
Estimated elevation above sea level10.8 meters (35.3 feet)

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

The municipality has a land area of 65.56 square kilometers or 25.31 square miles which constitutes 2.53% of Ilocos Sur's total area. Its population as determined by the 2020 Census was 25,998. This represented 3.68% of the total population of Ilocos Sur province, or 0.49% of the overall population of the Ilocos Region. Based on these figures, the population density is computed at 397 inhabitants per square kilometer or 1,027 inhabitants per square mile.

Barangays

Sinait has 44 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Sinait
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Aguing1.25%3263211.56%0.33%
Baliw0.77%200233-14.16%-3.16%
Ballaigui2.20%573649-11.71%-2.59%
Baracbac2.81%730734-0.54%-0.11%
Barikir1.90%49342914.92%2.97%
Battog1.93%5034834.14%0.86%
Binacud1.13%295319-7.52%-1.63%
Cabangtalan2.06%5365134.48%0.93%
Cabarambanan1.38%360364-1.10%-0.23%
Cabulalaan1.21%314319-1.57%-0.33%
Cadanglaan1.27%330340-2.94%-0.63%
Calanutian2.00%521569-8.44%-1.84%
Calingayan1.04%2712700.37%0.08%
Curtin1.22%318332-4.22%-0.90%
Dadalaquiten Norte3.09%8037832.55%0.53%
Dadalaquiten Sur3.44%89576017.76%3.50%
Dean Leopoldo Yabes6.34%1,6481,6112.30%0.48%
Duyayyat1.70%441503-12.33%-2.73%
Jordan2.30%59952214.75%2.94%
Katipunan3.86%1,0049941.01%0.21%
Macabiag3.40%8858128.99%1.83%
Magsaysay2.34%608639-4.85%-1.04%
Marnay1.47%3823615.82%1.20%
Masadag2.42%6286083.29%0.68%
Nagbalioartian2.02%5245122.34%0.49%
Nagcullooban1.68%4384331.15%0.24%
Nagongburan1.38%359386-6.99%-1.51%
Namnama2.79%725746-2.82%-0.60%
Pacis2.67%6936644.37%0.90%
Paratong5.60%1,4551,4520.21%0.04%
Purag2.21%57449715.49%3.08%
Quibit-quibit1.53%3973940.76%0.16%
Quimmallogong1.45%3783527.39%1.51%
Rang-ay1.93%503546-7.88%-1.71%
Ricudo1.77%460477-3.56%-0.76%
Sabañgan3.44%894921-2.93%-0.62%
Sallacapo1.51%3923579.80%1.99%
Santa Cruz3.44%8958584.31%0.89%
Sapriana1.88%490564-13.12%-2.92%
Tapao2.93%7617363.40%0.71%
Teppeng5.44%1,4131,3336.00%1.23%
Tubigay1.45%3783634.13%0.86%
Ubbog1.09%2832608.85%1.80%
Zapat1.24%3233210.62%0.13%
Sinait Total25,99825,6401.40%0.29%

Economy

The annual regular revenue of Sinait for the fiscal year of 2016 was ₱289,589,957.93.

details
Annual regular income of Sinait (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200951,712,613.94–
2010100,920,756.7895.16%
201192,991,627.01-7.86%
201285,345,235.32-8.22%
201386,049,153.420.82%
201465,100,082.66-24.35%
2015162,277,951.39149.27%
2016289,589,957.9378.45%

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 Sinait in the 2015 Census was 25,635 broken down into 6,138 households or an average of 4.18 members per household.

details
Number of households in Sinait (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
21,7734,4974.84
22,6044,8374.67
24,0685,1314.69
24,8925,5704.47
25,4045,9424.28
25,6356,1384.18

Population by age group

According to the 2015 Census, the age group with the highest population in Sinait is 5 to 9, with 2,446 individuals. Conversely, the age group with the lowest population is Under 1, with 432 individuals.

details
Population of Sinait by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 14321.68%
1 to 41,8267.12%
5 to 92,4469.54%
10 to 142,3159.03%
15 to 192,0888.14%
20 to 242,0497.99%
25 to 291,9847.74%
30 to 341,9047.43%
35 to 391,8147.07%
40 to 441,5596.08%
45 to 491,5916.21%
50 to 541,3315.19%
55 to 591,0834.22%
60 to 648653.37%
65 to 697262.83%
70 to 745762.25%
75 to 794911.91%
80 and over5602.18%
Total25,640100.00%
  • Youth Dependency Ratio: 43.15
  • Old Age Dependency Ratio: 14.46
  • Total Dependency Ratio: 57.61
  • Median Age: 29.19

Historical population

The population of Sinait grew from 9,157 in 1903 to 25,998 in 2020, an increase of 16,841 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 0.29%, or an increase of 358 people, from the previous population of 25,640 in 2015.

details
Population of Sinait (1903‑2020)
Census datePopulationGrowth rate
9,157–
12,3351.90%
11,722-0.25%
12,0150.25%
15,1702.07%
16,4290.78%
17,9521.79%
19,0501.19%
21,7791.35%
22,6080.70%
24,0701.35%
24,8960.47%
25,4270.77%
25,6400.16%
25,9980.29%

The total number of registered voters or electorate in Sinait for the year 2019 was 18,415, broken down into 9,155 males and 9,260 females.

Location

The municipal center of Sinait is situated at approximately 17° 52' North, 120° 27' East, in the island of Luzon. Elevation at these coordinates is estimated at 10.8 meters or 35.3 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 Sinait are Batac, Ilocos Norte, Vigan, Ilocos Sur, Laoag, Ilocos Norte, Candon, Ilocos Sur, Tabuk, Kalinga, and San Fernando, La Union. The nearest municipalities are Badoc, Ilocos Norte, Cabugao, Ilocos Sur, Pinili, Ilocos Norte, San Juan, Ilocos Sur, Currimao, Ilocos Norte, and Magsingal, Ilocos Sur. Its distance from the national capital is 366.80 kilometers (227.92 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

Distance from Manila: 366.80 kilometers (227.92 miles) to the South (S9°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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