Santo Domingo, Province of Ilocos Sur

Summary data
Typemunicipality
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
Barangay count36
Postal code2729
Coastal/Landlockedcoastal
Marine waterbodiesSouth China Sea
Philippine major island(s)Luzon
Area (2013)55.49 km2 (21.42 sq mi)
Population (2020)29,041
Density (2020)523 / km2 (1,356 / sq mi)
Coordinates17° 38' North, 120° 25' East (17.6378, 120.4101)
Estimated elevation above sea level15.9 meters (52.2 feet)

Santo Domingo is a coastal municipality in the province of Ilocos Sur.

The municipality has a land area of 55.49 square kilometers or 21.42 square miles which constitutes 2.14% of Ilocos Sur's total area. Its population as determined by the 2020 Census was 29,041. This represented 4.11% of the total population of Ilocos Sur province, or 0.55% of the overall population of the Ilocos Region. Based on these figures, the population density is computed at 523 inhabitants per square kilometer or 1,356 inhabitants per square mile.

Barangays

Santo Domingo has 36 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Santo Domingo
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Binalayangan1.08%31426916.73%3.31%
Binongan2.40%6976585.93%1.22%
Borobor1.86%53948511.13%2.25%
Cabaritan4.38%1,2731,06719.31%3.79%
Cabigbigaan2.11%6125756.43%1.32%
Calautit3.88%1,1271,158-2.68%-0.57%
Calay-ab2.96%8608214.75%0.98%
Camestizoan3.99%1,1591,03212.31%2.47%
Casili1.34%38833117.22%3.40%
Flora1.90%552559-1.25%-0.26%
Lagatit3.54%1,02791712.00%2.41%
Laoingen4.77%1,3841,3512.44%0.51%
Lussoc3.74%1,0871,152-5.64%-1.22%
Nagbettedan2.59%7537056.81%1.40%
Naglaoa-an3.17%9228676.34%1.30%
Nalasin4.55%1,3201,378-4.21%-0.90%
Nambaran4.55%1,3211,383-4.48%-0.96%
Nanerman1.93%5605276.26%1.29%
Napo1.78%517554-6.68%-1.44%
Padu Chico3.42%9931,032-3.78%-0.81%
Padu Grande1.07%3122897.96%1.62%
Paguraper1.89%54947216.31%3.23%
Panay0.79%23017829.21%5.54%
Pangpangdan2.18%63255713.46%2.69%
Parada2.37%689764-9.82%-2.15%
Paras2.51%7286905.51%1.13%
Poblacion2.80%813896-9.26%-2.03%
Puerta Real3.08%8948455.80%1.19%
Pussuac3.99%1,1591,0797.41%1.52%
Quimmarayan4.03%1,1711,1353.17%0.66%
San Pablo3.33%96787810.14%2.05%
Santa Cruz2.23%6476056.94%1.42%
Santo Tomas1.51%438439-0.23%-0.05%
Sived3.05%88579611.18%2.26%
Suksukit1.26%366410-10.73%-2.36%
Vacunero3.98%1,1561,1213.12%0.65%
Santo Domingo Total29,04127,9753.81%0.79%

Economy

The annual regular revenue of Santo Domingo for the fiscal year of 2016 was 155,787,673.97.

details
Annual regular income of Santo Domingo (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200947,510,873.59
201071,690,665.1450.89%
201173,286,292.462.23%
201269,755,580.74-4.82%
201375,558,978.138.32%
201466,721,285.04-11.70%
201598,731,217.0947.98%
2016155,787,673.9757.79%

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 Santo Domingo in the 2015 Census was 27,967 broken down into 6,777 households or an average of 4.13 members per household.

details
Number of households in Santo Domingo (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
20,7203,9585.23
22,7274,3985.17
24,5174,8715.03
25,8825,6254.60
27,5936,0794.54
27,9676,7774.13

Population by age group

According to the 2015 Census, the age group with the highest population in Santo Domingo is 5 to 9, with 2,684 individuals. Conversely, the age group with the lowest population is 75 to 79, with 386 individuals.

details
Population of Santo Domingo by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 14941.77%
1 to 41,9827.08%
5 to 92,6849.59%
10 to 142,6189.36%
15 to 192,3938.55%
20 to 242,3838.52%
25 to 292,1937.84%
30 to 342,1767.78%
35 to 391,9587.00%
40 to 441,6846.02%
45 to 491,6235.80%
50 to 541,3974.99%
55 to 591,1704.18%
60 to 641,0503.75%
65 to 697292.61%
70 to 745832.08%
75 to 793861.38%
80 and over4721.69%
Total27,975100.00%
  • Youth Dependency Ratio: 43.15
  • Old Age Dependency Ratio: 12.04
  • Total Dependency Ratio: 55.19
  • Median Age: 28.27

Historical population

The population of Santo Domingo grew from 10,075 in 1903 to 29,041 in 2020, an increase of 18,966 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 0.79%, or an increase of 1,066 people, from the previous population of 27,975 in 2015.

details
Population of Santo Domingo (1903‑2020)
Census datePopulationGrowth rate
10,075
13,0181.63%
10,856-0.90%
11,0820.21%
13,6851.87%
14,9800.89%
15,9571.28%
17,7282.13%
20,7201.57%
22,7271.75%
24,5201.64%
25,8880.75%
27,5962.35%
27,9750.26%
29,0410.79%

The total number of registered voters or electorate in Santo Domingo for the year 2019 was 19,315, broken down into 9,574 males and 9,741 females.

Location

The municipal center of Santo Domingo is situated at approximately 17° 38' North, 120° 25' East, in the island of Luzon. Elevation at these coordinates is estimated at 15.9 meters or 52.2 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 Santo Domingo are Vigan, Ilocos Sur, Batac, Ilocos Norte, Candon, Ilocos Sur, Laoag, Ilocos Norte, San Fernando, La Union, and Tabuk, Kalinga. The nearest municipalities are San Ildefonso, Ilocos Sur, Magsingal, Ilocos Sur, San Vicente, Ilocos Sur, Bantay, Ilocos Sur, Santa Catalina, Ilocos Sur, and Caoayan, Ilocos Sur. Its distance from the national capital is 342.71 kilometers (212.95 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

Distance from Manila: 342.71 kilometers (212.95 miles) to the South (S10°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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