Diffun, Province of Quirino

Summary data
Typemunicipality
Island groupLuzon
RegionCagayan Valley (Region II)
ProvinceQuirino
Barangay count33
Postal code3401
Coastal/Landlockedlandlocked
Marine waterbodiesnone (landlocked)
Philippine major island(s)Luzon
Area (2007)320.10 km2 (123.59 sq mi)
Population (2015)52,569
Density (2015)164 / km2 (425 / sq mi)
Coordinates16° 36' North, 121° 30' East (16.5930, 121.5030)
Estimated elevation above sea level143.3 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 13.78% of Quirino's total area. Its population as determined by the 2015 Census was 52,569. This represented 27.82% 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 164 inhabitants per square kilometer or 425 inhabitants per square mile.

Barangays

Diffun has 33 barangays as shown in the following table.

Demographic profile of barangays
BarangayPopulation percentage (2015)Population (2015)Population (2010)Change (2010‑2015)Annual Population Growth Rate (2010‑2015)
Aklan Village1.73%9098635.33%0.99%
Andres Bonifacio7.11%3,7403,5166.37%1.18%
Aurora East3.15%1,6581,6132.79%0.53%
Aurora West5.04%2,6522,4249.41%1.73%
Baguio Village1.81%94982115.59%2.80%
Balagbag3.29%1,7301,6643.97%0.74%
Bannawag4.04%2,1261,9349.93%1.82%
Cajel3.97%2,0891,86512.01%2.18%
Campamento2.89%1,5171,588-4.47%-0.87%
Diego Silang3.52%1,8521,68010.24%1.87%
Don Faustino Pagaduan0.98%51340825.74%4.46%
Don Mariano Perez, Sr.1.51%792808-1.98%-0.38%
Doña Imelda1.15%6055971.34%0.25%
Dumanisi3.72%1,9571,67017.19%3.07%
Gabriela Silang4.09%2,1501,9729.03%1.66%
Gregorio Pimentel1.58%83072414.64%2.64%
Gulac3.37%1,7701,59810.76%1.97%
Guribang2.57%1,3501,351-0.07%-0.01%
Ifugao Village2.86%1,5061,18527.09%4.67%
Isidro Paredes3.42%1,8001,6538.89%1.64%
Liwayway4.84%2,5422,4712.87%0.54%
Luttuad3.78%1,9891,63821.43%3.77%
Magsaysay1.79%9409024.21%0.79%
Makate1.30%6816416.24%1.16%
Maria Clara2.86%1,5051,21823.56%4.11%
Rafael Palma1.50%78669812.61%2.29%
Ricarte Norte3.02%1,5881,4976.08%1.13%
Ricarte Sur1.33%6986576.24%1.16%
Rizal6.99%3,6743,06020.07%3.54%
San Antonio2.93%1,5422,001-22.94%-4.84%
San Isidro3.69%1,9401,8296.07%1.13%
San Pascual1.33%6986399.23%1.70%
Villa Pascua2.84%1,4911,31613.30%2.41%
Diffun Total52,56948,5018.39%1.55%

Economy

According to the Bureau of Local Government Finance, the annual regular revenue of Diffun for the fiscal year of 2016 was 146,153,738.46.

details
Fiscal YearAnnual Regular IncomeChange
200978,893,614.95
201085,559,479.698.45%
201190,900,635.856.24%
201290,117,265.56-0.86%
2013103,925,423.9515.32%
2014115,798,987.7311.43%
2015122,728,235.035.98%
2016146,153,738.4619.09%

End notes:

  • Annual Regular Income = Locally Sourced Revenue + Internal Revenue Allotment (IRA) Current Year + Other Shares from National Tax Collection
  • Locally Sourced Revenue = Real Property Tax (General Fund) + Tax on Business + Other Taxes + Regulatory Fees + Service/User Charges + Receipts from Economic Enterprises

Demographics

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 groupPopulation (2015)
Under 11,097
1 to 44,722
5 to 95,642
10 to 145,304
15 to 195,126
20 to 244,968
25 to 294,293
30 to 343,955
35 to 393,517
40 to 443,181
45 to 492,806
50 to 542,336
55 to 591,850
60 to 641,432
65 to 69938
70 to 74569
75 to 79456
80 and over377
Total52,569

Historical population

The population of Diffun grew from 9,106 in 1960 to 52,569 in 2015, an increase of 43,463 people. The latest census figures in 2015 denote a positive growth rate of 1.55%, or an increase of 4,068 people, from the previous population of 48,501 in 2010.

details
Census datePopulationGrowth rate
9,106
14,2334.47%
17,8114.60%
23,0865.32%
31,2663.08%
36,0482.70%
39,4891.97%
42,9581.17%
48,5014.52%
52,5691.55%

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, Cauayan, Ilagan, Tabuk, Baguio, and San Jose. The nearest municipalities are Saguday, Cabarroguis, Cordon, Aglipay, Diadi, and Ramon. 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

Nearest cities

  • Santiago, Isabela, 11.36 kilometers (7.06 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, 91.03 kilometers (56.56 miles) to the North (N4°W)
  • Baguio, 99.17 kilometers (61.62 miles) to the West‑Southwest (S78°W)
  • San Jose, Nueva Ecija, 104.44 kilometers (64.89 miles) to the South‑Southwest (S32°W)

Distance from Manila: 228.57 kilometers (142.02 miles) to the South‑Southwest (S14°W)

National rankings

  • Population (2015): 52,569, ranked 444 out of 1,634
  • Land area (2007): 123.59 square kilometers, ranked 268 out of 1,634
  • Population density (2015): 164 inhabitants per square kilometer, ranked 1,053 out of 1,634
  • Annual population growth rate (2010 to 2015): 1.55%, ranked 792 out of 1,634

Notes

  1. Unless otherwise specified, population count (excluding percentages) and land area figures are derived from the Philippine Statistics Authority.
  2. Data on annual regular income is from the Bureau of Local Government Finance, Department of Finance
  3. Postal code information is from the Philippine Postal Corporation.
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