Diffun, Province of Quirino
| Type | municipality |
|---|---|
| Island group | Luzon |
| Region | Cagayan Valley (Region II) |
| Province | Quirino |
| Barangay count | 33 |
| Postal code | 3401 |
| Coastal/Landlocked | landlocked |
| Marine waterbodies | none (landlocked) |
| Philippine major island(s) | Luzon |
| Area (2013) | 320.10 km2 (123.59 sq mi) |
| Population (2020) | 56,102 |
| Density (2020) | 175 / km2 (454 / sq mi) |
| Coordinates | 16° 36' North, 121° 30' East (16.5930, 121.5030) |
| Estimated elevation above sea level | 143.3 meters (469.9 feet) |
Diffun is a municipality in the landlocked province of Quirino.
The municipality has a land area of 320.10 square kilometers or 123.59 square miles which constitutes 13.80% of Quirino's total area. Its population as determined by the 2020 Census was 56,102. This represented 27.52% of the total population of Quirino province, or 1.52% of the overall population of the Cagayan Valley region. Based on these figures, the population density is computed at 175 inhabitants per square kilometer or 454 inhabitants per square mile.
Barangays
Diffun has 33 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) |
|---|---|---|---|---|---|
| Aklan Village | 1.81% | 1,014 | 909 | 11.55% | 2.33% |
| Andres Bonifacio | 7.20% | 4,037 | 3,740 | 7.94% | 1.62% |
| Aurora East | 2.82% | 1,581 | 1,658 | -4.64% | -1.00% |
| Aurora West | 5.18% | 2,908 | 2,652 | 9.65% | 1.96% |
| Baguio Village | 1.55% | 870 | 949 | -8.32% | -1.81% |
| Balagbag | 3.20% | 1,796 | 1,730 | 3.82% | 0.79% |
| Bannawag | 4.24% | 2,380 | 2,126 | 11.95% | 2.40% |
| Cajel | 3.71% | 2,082 | 2,089 | -0.34% | -0.07% |
| Campamento | 2.80% | 1,573 | 1,517 | 3.69% | 0.77% |
| Diego Silang | 3.45% | 1,938 | 1,852 | 4.64% | 0.96% |
| Don Faustino Pagaduan | 1.05% | 588 | 513 | 14.62% | 2.91% |
| Don Mariano Perez, Sr. | 1.43% | 804 | 792 | 1.52% | 0.32% |
| Doña Imelda | 1.31% | 733 | 605 | 21.16% | 4.12% |
| Dumanisi | 3.71% | 2,084 | 1,957 | 6.49% | 1.33% |
| Gabriela Silang | 3.76% | 2,108 | 2,150 | -1.95% | -0.41% |
| Gregorio Pimentel | 1.50% | 839 | 830 | 1.08% | 0.23% |
| Gulac | 3.24% | 1,820 | 1,770 | 2.82% | 0.59% |
| Guribang | 2.65% | 1,485 | 1,350 | 10.00% | 2.03% |
| Ifugao Village | 2.70% | 1,514 | 1,506 | 0.53% | 0.11% |
| Isidro Paredes | 3.76% | 2,108 | 1,800 | 17.11% | 3.38% |
| Liwayway | 5.26% | 2,953 | 2,542 | 16.17% | 3.20% |
| Luttuad | 4.13% | 2,316 | 1,989 | 16.44% | 3.26% |
| Magsaysay | 1.59% | 890 | 940 | -5.32% | -1.14% |
| Makate | 1.24% | 694 | 681 | 1.91% | 0.40% |
| Maria Clara | 3.22% | 1,808 | 1,505 | 20.13% | 3.94% |
| Rafael Palma | 1.41% | 793 | 786 | 0.89% | 0.19% |
| Ricarte Norte | 3.00% | 1,684 | 1,588 | 6.05% | 1.24% |
| Ricarte Sur | 1.20% | 674 | 698 | -3.44% | -0.73% |
| Rizal | 7.65% | 4,293 | 3,674 | 16.85% | 3.33% |
| San Antonio | 2.43% | 1,365 | 1,542 | -11.48% | -2.53% |
| San Isidro | 3.62% | 2,030 | 1,940 | 4.64% | 0.96% |
| San Pascual | 1.22% | 687 | 698 | -1.58% | -0.33% |
| Villa Pascua | 2.95% | 1,653 | 1,491 | 10.87% | 2.19% |
| Diffun Total | 56,102 | 52,569 | 6.72% | 1.38% | |
Economy
The annual regular revenue of Diffun for the fiscal year of 2016 was ₱146,153,738.46.
details
| Fiscal Year | Annual Regular Income | Change |
|---|---|---|
| 2009 | 78,893,614.95 | – |
| 2010 | 85,559,479.69 | 8.45% |
| 2011 | 90,900,635.85 | 6.24% |
| 2012 | 90,117,265.56 | -0.86% |
| 2013 | 103,925,423.95 | 15.32% |
| 2014 | 115,798,987.73 | 11.43% |
| 2015 | 122,728,235.03 | 5.98% |
| 2016 | 146,153,738.46 | 19.09% |
End notes:
| ||
Demographics
Households
The household population of Diffun in the 2015 Census was 52,471 broken down into 12,283 households or an average of 4.27 members per household.
details
| Census date | Household population | Number of households | Average household size |
|---|---|---|---|
| 31,254 | 6,051 | 5.17 | |
| 36,040 | 7,251 | 4.97 | |
| 39,485 | 8,274 | 4.77 | |
| 42,958 | 9,749 | 4.41 | |
| 48,474 | 11,090 | 4.37 | |
| 52,471 | 12,283 | 4.27 |
Population by age group
According to the 2015 Census, the age group with the highest population in Diffun is 5 to 9, with 5,642 individuals. Conversely, the age group with the lowest population is 80 and over, with 377 individuals.
details
| Age group | Population (2015) | Age group percentage |
|---|---|---|
| Under 1 | 1,097 | 2.09% |
| 1 to 4 | 4,722 | 8.98% |
| 5 to 9 | 5,642 | 10.73% |
| 10 to 14 | 5,304 | 10.09% |
| 15 to 19 | 5,126 | 9.75% |
| 20 to 24 | 4,968 | 9.45% |
| 25 to 29 | 4,293 | 8.17% |
| 30 to 34 | 3,955 | 7.52% |
| 35 to 39 | 3,517 | 6.69% |
| 40 to 44 | 3,181 | 6.05% |
| 45 to 49 | 2,806 | 5.34% |
| 50 to 54 | 2,336 | 4.44% |
| 55 to 59 | 1,850 | 3.52% |
| 60 to 64 | 1,432 | 2.72% |
| 65 to 69 | 938 | 1.78% |
| 70 to 74 | 569 | 1.08% |
| 75 to 79 | 456 | 0.87% |
| 80 and over | 377 | 0.72% |
| Total | 52,569 | 100.00% |
| ||
Historical population
The population of Diffun grew from 9,106 in 1960 to 56,102 in 2020, an increase of 46,996 people over the course of 60 years. The latest census figures in 2020 denote a positive growth rate of 1.38%, or an increase of 3,533 people, from the previous population of 52,569 in 2015.
details
| Census date | Population | Growth rate |
|---|---|---|
| – | – | |
| – | – | |
| – | – | |
| – | – | |
| 9,106 | – | |
| 14,233 | 4.47% | |
| 17,811 | 4.60% | |
| 23,086 | 5.32% | |
| 31,266 | 3.08% | |
| 36,048 | 2.70% | |
| 39,489 | 1.97% | |
| 42,958 | 1.17% | |
| 48,501 | 4.52% | |
| 52,569 | 1.55% | |
| 56,102 | 1.38% |
The total number of registered voters or electorate in Diffun for the year 2019 was 30,002, broken down into 14,901 males and 15,101 females.
Location
The municipal center of Diffun is situated at approximately 16° 36' North, 121° 30' East, in the island of Luzon. Elevation at these coordinates is estimated at 143.3 meters or 469.9 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 Diffun are Santiago, Isabela, Cauayan, Isabela, Ilagan, Isabela, Tabuk, Kalinga, Baguio, and San Jose, Nueva Ecija. The nearest municipalities are Saguday, Quirino, Cabarroguis, Quirino, Cordon, Isabela, Aglipay, Quirino, Diadi, Nueva Vizcaya, and San Isidro, Isabela. Its distance from the national capital is 228.57 kilometers (142.02 miles). The following list delineates such distance measurements.
great-circle distance
Nearest towns
- Saguday, Quirino, 8.61 kilometers (5.35 miles) to the Southeast (S48°E)
- Cabarroguis, Quirino, 9.42 kilometers (5.86 miles) to the South‑Southeast (S13°E)
- Cordon, Isabela, 9.78 kilometers (6.07 miles) to the North‑Northwest (N24°W)
- Aglipay, Quirino, 14.54 kilometers (9.04 miles) to the Southeast (S38°E)
- Diadi, Nueva Vizcaya, 16.14 kilometers (10.03 miles) to the West‑Northwest (N63°W)
- San Isidro, Isabela, 20.36 kilometers (12.65 miles) to the Northeast (N40°E)
Nearest cities
- Santiago, Isabela, 11.38 kilometers (7.07 miles) to the North‑Northeast (N23°E)
- Cauayan, Isabela, 47.08 kilometers (29.25 miles) to the Northeast (N36°E)
- Ilagan, Isabela, 73.57 kilometers (45.71 miles) to the Northeast (N34°E)
- Tabuk, Kalinga, 97.42 kilometers (60.54 miles) to the North (N2°W)
- Baguio, 99.17 kilometers (61.62 miles) to the West‑Southwest (S78°W)
- San Jose, Nueva Ecija, 104.30 kilometers (64.81 miles) to the South‑Southwest (S32°W)
Distance from Manila: 228.57 kilometers (142.02 miles) to the South‑Southwest (S14°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.