Diadi, Province of Nueva Vizcaya
| Type | municipality |
|---|---|
| Island group | Luzon |
| Region | Cagayan Valley (Region II) |
| Province | Nueva Vizcaya |
| Barangay count | 19 |
| Postal code | 3712 |
| Coastal/Landlocked | landlocked |
| Marine waterbodies | none (landlocked) |
| Philippine major island(s) | Luzon |
| Area (2013) | 181.20 km2 (69.96 sq mi) |
| Population (2020) | 19,236 |
| Density (2020) | 106 / km2 (275 / sq mi) |
| Coordinates | 16° 40' North, 121° 22' East (16.6599, 121.3686) |
| Estimated elevation above sea level | 227.5 meters (746.2 feet) |
Diadi is a municipality in the landlocked province of Nueva Vizcaya.
The municipality has a land area of 181.20 square kilometers or 69.96 square miles which constitutes 3.76% of Nueva Vizcaya's total area. Its population as determined by the 2020 Census was 19,236. This represented 3.87% of the total population of Nueva Vizcaya province, or 0.52% of the overall population of the Cagayan Valley region. Based on these figures, the population density is computed at 106 inhabitants per square kilometer or 275 inhabitants per square mile.
Barangays
Diadi has 19 barangays as shown in the following table.
Demographic profile of barangays
| Barangay | Population percentage (2020) | Population (2020) | Population (2015) | Change (2015‑2020) | Annual Population Growth Rate (2015‑2020) |
|---|---|---|---|---|---|
| Ampakling | 4.44% | 855 | 759 | 12.65% | 2.54% |
| Arwas | 4.85% | 932 | 814 | 14.50% | 2.89% |
| Balete | 6.96% | 1,338 | 1,314 | 1.83% | 0.38% |
| Bugnay | 8.13% | 1,563 | 1,334 | 17.17% | 3.39% |
| Butao | 6.17% | 1,186 | 1,076 | 10.22% | 2.07% |
| Decabacan | 4.02% | 774 | 703 | 10.10% | 2.05% |
| Duruarog | 4.94% | 951 | 924 | 2.92% | 0.61% |
| Escoting | 5.15% | 991 | 983 | 0.81% | 0.17% |
| Langca | 1.61% | 309 | 259 | 19.31% | 3.79% |
| Lurad | 3.13% | 602 | 526 | 14.45% | 2.88% |
| Nagsabaran | 6.47% | 1,244 | 1,276 | -2.51% | -0.53% |
| Namamparan | 6.67% | 1,283 | 1,321 | -2.88% | -0.61% |
| Pinya | 3.65% | 703 | 665 | 5.71% | 1.18% |
| Poblacion | 18.41% | 3,542 | 3,320 | 6.69% | 1.37% |
| Rosario | 1.68% | 324 | 313 | 3.51% | 0.73% |
| San Luis | 3.25% | 626 | 580 | 7.93% | 1.62% |
| San Pablo | 4.29% | 825 | 829 | -0.48% | -0.10% |
| Villa Aurora | 2.75% | 529 | 457 | 15.75% | 3.13% |
| Villa Florentino | 3.43% | 659 | 669 | -1.49% | -0.32% |
| Diadi Total | 19,236 | 18,122 | 6.15% | 1.26% | |
Economy
The annual regular revenue of Diadi for the fiscal year of 2016 was ₱73,269,835.66.
details
| Fiscal Year | Annual Regular Income | Change |
|---|---|---|
| 2009 | – | – |
| 2010 | 43,311,149.81 | – |
| 2011 | 47,068,292.09 | 8.67% |
| 2012 | – | – |
| 2013 | 51,148,188.80 | – |
| 2014 | 57,710,913.47 | 12.83% |
| 2015 | 67,415,183.68 | 16.82% |
| 2016 | 73,269,835.66 | 8.68% |
End notes:
| ||
Demographics
Households
The household population of Diadi in the 2015 Census was 18,111 broken down into 4,441 households or an average of 4.08 members per household.
details
| Census date | Household population | Number of households | Average household size |
|---|---|---|---|
| 11,335 | 2,185 | 5.19 | |
| 12,453 | 2,559 | 4.87 | |
| 14,374 | 2,847 | 5.05 | |
| 15,554 | 3,484 | 4.46 | |
| 16,484 | 3,740 | 4.41 | |
| 18,111 | 4,441 | 4.08 |
Population by age group
According to the 2015 Census, the age group with the highest population in Diadi is 5 to 9, with 2,083 individuals. Conversely, the age group with the lowest population is 75 to 79, with 134 individuals.
details
| Age group | Population (2015) | Age group percentage |
|---|---|---|
| Under 1 | 409 | 2.26% |
| 1 to 4 | 1,679 | 9.26% |
| 5 to 9 | 2,083 | 11.49% |
| 10 to 14 | 1,862 | 10.27% |
| 15 to 19 | 1,669 | 9.21% |
| 20 to 24 | 1,669 | 9.21% |
| 25 to 29 | 1,429 | 7.89% |
| 30 to 34 | 1,328 | 7.33% |
| 35 to 39 | 1,229 | 6.78% |
| 40 to 44 | 1,039 | 5.73% |
| 45 to 49 | 926 | 5.11% |
| 50 to 54 | 803 | 4.43% |
| 55 to 59 | 670 | 3.70% |
| 60 to 64 | 501 | 2.76% |
| 65 to 69 | 336 | 1.85% |
| 70 to 74 | 207 | 1.14% |
| 75 to 79 | 134 | 0.74% |
| 80 and over | 149 | 0.82% |
| Total | 18,122 | 100.00% |
| ||
Historical population
The population of Diadi grew from 4,407 in 1970 to 19,236 in 2020, an increase of 14,829 people over the course of 50 years. The latest census figures in 2020 denote a positive growth rate of 1.26%, or an increase of 1,114 people, from the previous population of 18,122 in 2015.
details
| Census date | Population | Growth rate |
|---|---|---|
| – | – | |
| – | – | |
| – | – | |
| – | – | |
| – | – | |
| 4,407 | – | |
| 6,649 | 8.60% | |
| 8,605 | 5.29% | |
| 11,351 | 2.81% | |
| 12,469 | 1.78% | |
| 14,374 | 3.10% | |
| 15,567 | 1.11% | |
| 16,484 | 2.11% | |
| 18,122 | 1.82% | |
| 19,236 | 1.26% |
The total number of registered voters or electorate in Diadi for the year 2019 was 11,149, broken down into 5,724 males and 5,425 females.
Location
The municipal center of Diadi is situated at approximately 16° 40' North, 121° 22' East, in the island of Luzon. Elevation at these coordinates is estimated at 227.5 meters or 746.2 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 Diadi are Santiago, Isabela, Cauayan, Isabela, Ilagan, Isabela, Baguio, Tabuk, Kalinga, and San Jose, Nueva Ecija. The nearest municipalities are Cordon, Isabela, Bagabag, Nueva Vizcaya, Lamut, Ifugao, Diffun, Quirino, Villaverde, Nueva Vizcaya, and Quezon, Nueva Vizcaya. Its distance from the national capital is 232.74 kilometers (144.62 miles). The following list delineates such distance measurements.
great-circle distance
Nearest towns
- Cordon, Isabela, 10.53 kilometers (6.54 miles) to the East (N81°E)
- Bagabag, Nueva Vizcaya, 13.70 kilometers (8.51 miles) to the West‑Southwest (S64°W)
- Lamut, Ifugao, 15.73 kilometers (9.77 miles) to the West (S86°W)
- Diffun, Quirino, 16.14 kilometers (10.03 miles) to the East‑Southeast (S63°E)
- Villaverde, Nueva Vizcaya, 20.91 kilometers (12.99 miles) to the West‑Southwest (S69°W)
- Quezon, Nueva Vizcaya, 21.78 kilometers (13.53 miles) to the South‑Southwest (S30°W)
Nearest cities
- Santiago, Isabela, 19.11 kilometers (11.88 miles) to the East (N81°E)
- Cauayan, Isabela, 52.17 kilometers (32.42 miles) to the Northeast (N54°E)
- Ilagan, Isabela, 77.11 kilometers (47.91 miles) to the Northeast (N46°E)
- Baguio, 87.19 kilometers (54.18 miles) to the West‑Southwest (S72°W)
- Tabuk, Kalinga, 90.55 kilometers (56.26 miles) to the North (N7°E)
- San Jose, Nueva Ecija, 104.30 kilometers (64.81 miles) to the South‑Southwest (S23°W)
Distance from Manila: 232.74 kilometers (144.62 miles) to the South (S10°W)
Notes
- Unless otherwise specified, population count (excluding percentages), household data, and land area figures are derived from the Philippine Statistics Authority.
- Data on registered voters is from the Commission on Elections.
- Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
- Postal code information is from the Philippine Postal Corporation.