San Guillermo, Municipality of San Nicolas, Province of Ilocos Norte

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Norte
MunicipalitySan Nicolas
Postal code2901
Population (2020)1,678
Philippine major island(s)Luzon
Coordinates18.1529, 120.5985 (18° 9' North, 120° 36' East)
Estimated elevation above sea level19.4 meters (63.6 feet)

San Guillermo is a barangay in the municipality of San Nicolas, in the province of Ilocos Norte. Its population as determined by the 2020 Census was 1,678. This represented 4.31% of the total population of San Nicolas.

Demographics

Households

The household population of San Guillermo in the 2015 Census was 1,746 broken down into 422 households or an average of 4.14 members per household.

details
Number of households in San Guillermo (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,1172274.92
1,2152474.92
1,3212714.87
1,5033314.54
1,5363484.41
1,7464224.14

Population by age group

According to the 2015 Census, the age group with the highest population in San Guillermo is 5 to 9, with 183 individuals. Conversely, the age group with the lowest population is 75 to 79, with 19 individuals.

details
Population of San Guillermo by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1351.97%
1 to 41267.09%
5 to 918310.30%
10 to 141759.85%
15 to 191367.65%
20 to 241619.06%
25 to 291639.17%
30 to 341659.29%
35 to 391438.05%
40 to 44895.01%
45 to 491025.74%
50 to 54734.11%
55 to 59583.26%
60 to 64532.98%
65 to 69372.08%
70 to 74251.41%
75 to 79191.07%
80 and over341.91%
Total1,777100.00%
  • Youth Dependency Ratio: 45.41
  • Old Age Dependency Ratio: 10.06
  • Total Dependency Ratio: 55.47
  • Median Age: 27.22

Historical population

The population of San Guillermo grew from 1,123 in 1990 to 1,678 in 2020, an increase of 555 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 1.20%, or a decrease of 99 people, from the previous population of 1,777 in 2015.

Population of San Guillermo (1990‑2020)
Census datePopulationGrowth rate
1,123
1,2151.49%
1,3211.81%
1,5201.95%
1,5360.38%
1,7772.81%
1,678-1.20%

Location

San Guillermo is situated at approximately 18.1529, 120.5985, in the island of Luzon. Elevation at these coordinates is estimated at 19.4 meters or 63.6 feet above mean sea level.


Adjacent barangays

San Guillermo 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.
(Back to top)