Udiao, Municipality of Rosario, Province of La Union

Summary data
Typebarangay
Island groupLuzon
RegionIlocos Region (Region I)
ProvinceLa Union
MunicipalityRosario
Postal code2506
Population (2020)2,553
Philippine major island(s)Luzon
Coordinates16.2169, 120.5020 (16° 13' North, 120° 30' East)
Estimated elevation above sea level151.6 meters (497.4 feet)

Udiao is a barangay in the municipality of Rosario, in the province of La Union. Its population as determined by the 2020 Census was 2,553. This represented 4.24% of the total population of Rosario.

Demographics

Households

The household population of Udiao in the 2015 Census was 2,592 broken down into 621 households or an average of 4.17 members per household.

details
Number of households in Udiao (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
1,3872794.97
1,6553414.85
1,9283904.94
2,2364814.65
2,2144904.52
2,5926214.17

Population by age group

According to the 2015 Census, the age group with the highest population in Udiao is 5 to 9, with 258 individuals. Conversely, the age group with the lowest population is 80 and over, with 26 individuals.

details
Population of Udiao by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 1662.55%
1 to 42188.41%
5 to 92589.95%
10 to 142268.72%
15 to 192379.14%
20 to 241927.41%
25 to 292047.87%
30 to 342208.49%
35 to 392037.83%
40 to 441415.44%
45 to 491325.09%
50 to 541315.05%
55 to 591074.13%
60 to 641013.90%
65 to 69732.82%
70 to 74281.08%
75 to 79291.12%
80 and over261.00%
Total2,592100.00%
  • Youth Dependency Ratio: 46.04
  • Old Age Dependency Ratio: 9.35
  • Total Dependency Ratio: 55.39
  • Median Age: 27.43

Historical population

The population of Udiao grew from 1,387 in 1990 to 2,553 in 2020, an increase of 1,166 people over the course of 30 years. The latest census figures in 2020 denote a negative growth rate of 0.32%, or a decrease of 39 people, from the previous population of 2,592 in 2015.

Population of Udiao (1990‑2020)
Census datePopulationGrowth rate
1,387
1,6553.36%
1,9283.33%
2,2362.06%
2,214-0.36%
2,5923.05%
2,553-0.32%

Location

Udiao is situated at approximately 16.2169, 120.5020, in the island of Luzon. Elevation at these coordinates is estimated at 151.6 meters or 497.4 feet above mean sea level.


Adjacent barangays

Udiao 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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