Isabela City, Province of Basilan

Summary data
Typecity (component)
Island groupMindanao
RegionZamboanga Peninsula (Region IX)
ProvinceBasilan
Barangay count45
Postal code7300
Coastal/Landlockedcoastal
Marine waterbodiesSulu Sea
Philippine major island(s)Basilan
Area (2007)223.73 km2 (86.38 sq mi)
Population (2015)112,788
Density (2015)504 / km2 (1,306 / sq mi)
Coordinates6° 42' North, 121° 58' East (6.7055, 121.9726)
Estimated elevation above sea level15.7 meters (51.6 feet)

Isabela is a coastal component city in the island province of Basilan. It serves as the provincial capital.

The city has a land area of 223.73 square kilometers or 86.38 square miles which constitutes 6.94% of Basilan's total area. Its population as determined by the 2015 Census was 112,788. This represented 2.98% of the total population of the Zamboanga Peninsula region. Based on these figures, the population density is computed at 504 inhabitants per square kilometer or 1,306 inhabitants per square mile.

Barangays

Isabela City has 45 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)
Aguada4.85%5,4695,1506.19%1.15%
Balatanay0.77%87353064.72%9.97%
Baluno2.27%2,5572,3299.79%1.79%
Begang2.54%2,8632,7294.91%0.92%
Binuangan1.56%1,7551,7052.93%0.55%
Busay1.42%1,6061,38715.79%2.83%
Cabunbata2.99%3,3763,05410.54%1.93%
Calvario2.03%2,2891,34869.81%10.61%
Carbon3.30%3,7202,57444.52%7.26%
Diki3.72%4,1993,25628.96%4.96%
Doña Ramona T. Alano0.80%907980-7.45%-1.46%
Isabela Eastside2.10%2,3702,967-20.12%-4.19%
Isabela Proper0.93%1,0541,0401.35%0.25%
Kapatagan Grande0.99%1,11887727.48%4.73%
Kapayawan0.85%9649056.52%1.21%
Kaumpurnah Zone I2.75%3,1073,167-1.89%-0.36%
Kaumpurnah Zone II3.33%3,7533,10021.06%3.71%
Kaumpurnah Zone III2.43%2,7362,23422.47%3.93%
Kumalarang1.13%1,27384750.30%8.07%
La Piedad1.83%2,0592,131-3.38%-0.65%
Lampinigan1.56%1,7581,32532.68%5.53%
Lanote3.20%3,6083,06817.60%3.14%
Lukbuton1.75%1,9781,53628.78%4.93%
Lumbang1.95%2,2001,74626.00%4.50%
Makiri0.60%67838576.10%11.38%
Maligue1.94%2,1921,92813.69%2.47%
Marang‑marang1.65%1,8631,46527.17%4.68%
Marketsite3.53%3,9813,57711.29%2.06%
Masula1.17%1,3221,430-7.55%-1.48%
Menzi3.29%3,7153,823-2.83%-0.54%
Panigayan2.40%2,7042,37413.90%2.51%
Panunsulan1.14%1,2831,305-1.69%-0.32%
Port Area1.17%1,3161,12516.98%3.03%
Riverside1.99%2,2481,91217.57%3.13%
San Rafael6.93%7,8134,46075.18%11.27%
Santa Barbara1.46%1,6471,20336.91%6.16%
Santa Cruz0.84%9511,139-16.51%-3.38%
Seaside0.40%449603-25.54%-5.46%
Small Kapatagan0.55%62251321.25%3.74%
Sumagdang5.79%6,5295,9639.49%1.74%
Sunrise Village2.12%2,3932,873-16.71%-3.42%
Tabiawan1.36%1,5351,5220.85%0.16%
Tabuk5.94%6,6965,34625.25%4.38%
Tampalan3.64%4,1013,8257.22%1.34%
Timpul1.03%1,1581,1015.18%0.97%
Isabela City Total112,78897,85715.26%2.74%

Economy

According to the Bureau of Local Government Finance, the annual regular revenue of Isabela City for the fiscal year of 2016 was 464,519,622.35.

details
Fiscal YearAnnual Regular IncomeChange
2009299,615,179.79
2010329,364,025.589.93%
2011353,167,040.107.23%
2012303,683,882.99-14.01%
2013330,105,216.348.70%
2014373,079,698.1213.02%
2015423,018,197.1413.39%
2016464,519,622.359.81%

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 Isabela City is 5 to 9, with 12,976 individuals. Conversely, the age group with the lowest population is 80 and over, with 510 individuals.

details
Age groupPopulation (2015)
Under 12,365
1 to 411,322
5 to 912,976
10 to 1412,548
15 to 1912,891
20 to 2411,410
25 to 299,394
30 to 347,529
35 to 396,898
40 to 445,899
45 to 495,307
50 to 544,256
55 to 593,388
60 to 642,632
65 to 691,821
70 to 741,016
75 to 79626
80 and over510
Total112,788

Historical population

The population of Isabela City grew from 59,482 in 1990 to 112,788 in 2015, an increase of 53,306 people. The latest census figures in 2015 denote a positive growth rate of 2.74%, or an increase of 14,931 people, from the previous population of 97,857 in 2010.

details
Census datePopulationGrowth rate
59,482
68,5572.70%
73,0321.37%
87,9852.60%
97,8573.95%
112,7882.74%

Location

The city center of Isabela is situated at approximately 6° 42' North, 121° 58' East, in the island of Basilan. Elevation at these coordinates is estimated at 15.7 meters or 51.6 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 Isabela City are Lamitan, Zamboanga City, Pagadian, Tangub, Dipolog, and Cotabato City. The nearest municipalities are Lantawan, Maluso, Akbar, Tuburan, Tipo-Tipo, and Sumisip. Its distance from the national capital is 878.93 kilometers (546.14 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

  • Lantawan, Basilan, 16.39 kilometers (10.18 miles) to the West‑Southwest (S62°W)
  • Maluso, Basilan, 20.90 kilometers (12.99 miles) to the South‑Southwest (S32°W)
  • Akbar, Basilan, 23.94 kilometers (14.88 miles) to the East (S79°E)
  • Tuburan, Basilan, 26.69 kilometers (16.58 miles) to the East‑Southeast (S66°E)
  • Tipo-Tipo, Basilan, 28.06 kilometers (17.44 miles) to the Southeast (S36°E)
  • Sumisip, Basilan, 28.26 kilometers (17.56 miles) to the South (S1°W)

Nearest cities

Distance from Manila: 878.93 kilometers (546.14 miles) to the North (N7°W)

National rankings

  • Population (2015): 112,788, ranked 149 out of 1,634
  • Land area (2007): 86.38 square kilometers, ranked 490 out of 1,634
  • Population density (2015): 504 inhabitants per square kilometer, ranked 376 out of 1,634
  • Annual population growth rate (2010 to 2015): 2.74%, ranked 37 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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