Nalasin, Municipality of Santo Domingo, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanto Domingo
Postal code2729
Population (2020)1,320
Philippine major island(s)Luzon
Coordinates17.6357, 120.4110 (17° 38' North, 120° 25' East)
Estimated elevation above sea level10.6 meters (34.8 feet)

Nalasin is a barangay in the municipality of Santo Domingo, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,320. This represented 4.55% of the total population of Santo Domingo.

Demographics

Households

The household population of Nalasin in the 2015 Census was 1,377 broken down into 295 households or an average of 4.67 members per household.

details
Number of households in Nalasin (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
9401805.22
9852014.90
1,1182244.99
1,2472624.76
1,3332774.81
1,3772954.67

Population by age group

According to the 2015 Census, the age group with the highest population in Nalasin is 10 to 14, with 144 individuals. Conversely, the age group with the lowest population is 75 to 79, with 12 individuals.

details
Population of Nalasin by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1211.52%
1 to 4966.97%
5 to 91299.36%
10 to 1414410.45%
15 to 191238.93%
20 to 241077.76%
25 to 291027.40%
30 to 341238.93%
35 to 391067.69%
40 to 44926.68%
45 to 49715.15%
50 to 54674.86%
55 to 59513.70%
60 to 64523.77%
65 to 69402.90%
70 to 74221.60%
75 to 79120.87%
80 and over201.45%
Total1,378100.00%
  • Youth Dependency Ratio: 43.62
  • Old Age Dependency Ratio: 10.51
  • Total Dependency Ratio: 54.13
  • Median Age: 28.38

Historical population

The population of Nalasin grew from 940 in 1990 to 1,320 in 2020, an increase of 380 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.90%, or a decrease of 58 people, from the previous population of 1,378 in 2015.

Population of Nalasin (1990‑2020)
Census datePopulationGrowth rate
940
9850.88%
1,1212.81%
1,2471.48%
1,3352.51%
1,3780.61%
1,320-0.90%

Location

Nalasin is situated at approximately 17.6357, 120.4110, in the island of Luzon. Elevation at these coordinates is estimated at 10.6 meters or 34.8 feet above mean sea level.


Adjacent barangays

Nalasin shares a common border with the following barangay(s):

Notes

  1. Data on population, and households, are from the Philippine Statistics Authority.
  2. Postal code information is from the Philippine Postal Corporation.
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