Nalvo, Municipality of Santa Maria, Province of Ilocos Sur

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceIlocos Sur
MunicipalitySanta Maria
Postal code2705
Population (2020)1,456
Philippine major island(s)Luzon
Coordinates17.3661, 120.4534 (17° 22' North, 120° 27' East)
Estimated elevation above sea level4.9 meters (16.1 feet)

Nalvo is a barangay in the municipality of Santa Maria, in the province of Ilocos Sur. Its population as determined by the 2020 Census was 1,456. This represented 4.85% of the total population of Santa Maria.

Demographics

Households

The household population of Nalvo in the 2015 Census was 1,500 broken down into 312 households or an average of 4.81 members per household.

details
Number of households in Nalvo (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,3162565.14
1,3682764.96
1,4272954.84
1,4783164.68
1,5313274.68
1,5003124.81

Population by age group

According to the 2015 Census, the age group with the highest population in Nalvo is 5 to 9, with 160 individuals. Conversely, the age group with the lowest population is 75 to 79, with 11 individuals.

details
Population of Nalvo by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1281.87%
1 to 41087.20%
5 to 916010.67%
10 to 141489.87%
15 to 19976.47%
20 to 241359.00%
25 to 291208.00%
30 to 34996.60%
35 to 391228.13%
40 to 44765.07%
45 to 49956.33%
50 to 54694.60%
55 to 59765.07%
60 to 64533.53%
65 to 69493.27%
70 to 74281.87%
75 to 79110.73%
80 and over261.73%
Total1,500100.00%
  • Youth Dependency Ratio: 47.13
  • Old Age Dependency Ratio: 12.1
  • Total Dependency Ratio: 59.23
  • Median Age: 28.08

Historical population

The population of Nalvo grew from 1,316 in 1990 to 1,456 in 2020, an increase of 140 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.62%, or a decrease of 44 people, from the previous population of 1,500 in 2015.

Population of Nalvo (1990‑2020)
Census datePopulationGrowth rate
1,316
1,3680.73%
1,4270.91%
1,4780.49%
1,5311.29%
1,500-0.39%
1,456-0.62%

Location

Nalvo is situated at approximately 17.3661, 120.4534, in the island of Luzon. Elevation at these coordinates is estimated at 4.9 meters or 16.1 feet above mean sea level.


Adjacent barangays

Nalvo 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)