Iba, Province of Zambales

Summary data
Typemunicipality
Island groupLuzon
RegionCentral Luzon (Region III)
ProvinceZambales
Barangay count14
Postal code2201
Coastal/Landlockedcoastal
Marine waterbodiesSouth China Sea
Philippine major island(s)Luzon
Area (2007)153.38 km2 (59.22 sq mi)
Population (2015)50,506
Density (2015)329 / km2 (853 / sq mi)
Coordinates15° 20' North, 119° 59' East (15.3264, 119.9786)
Estimated elevation above sea level12.7 meters (41.6 feet)

Iba is a coastal municipality in the province of Zambales. It serves as the provincial capital.

The municipality has a land area of 153.38 square kilometers or 59.22 square miles which constitutes 4.21% of Zambales's total area. Its population as determined by the 2015 Census was 50,506. This represented 8.55% of the total population of Zambales province, or 0.45% of the overall population of the Central Luzon region. Based on these figures, the population density is computed at 329 inhabitants per square kilometer or 853 inhabitants per square mile.

Barangays

Iba has 14 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)
Amungan17.85%9,0178,6434.33%0.81%
Bangantalinga9.42%4,7594,4716.44%1.20%
Dirita‑Baloguen6.26%3,1622,9038.92%1.64%
Lipay‑Dingin‑Panibuatan5.91%2,9872,9660.71%0.13%
Palanginan20.62%10,4139,01015.57%2.79%
San Agustin11.11%5,6094,88814.75%2.65%
Santa Barbara8.60%4,3453,74715.96%2.86%
Santo Rosario7.88%3,9793,9321.20%0.23%
Zone 1 Poblacion4.23%2,1362,0275.38%1.00%
Zone 2 Poblacion1.70%860914-5.91%-1.15%
Zone 3 Poblacion0.82%415465-10.75%-2.14%
Zone 4 Poblacion1.04%523562-6.94%-1.36%
Zone 5 Poblacion3.19%1,6111,5503.94%0.74%
Zone 6 Poblacion1.37%6906831.02%0.19%
Iba Total50,50646,7618.01%1.48%

Economy

According to the Bureau of Local Government Finance, the annual regular revenue of Iba for the fiscal year of 2016 was 150,175,708.02.

details
Fiscal YearAnnual Regular IncomeChange
200976,331,810.73
201080,341,889.995.25%
201188,547,707.5510.21%
201289,286,536.500.83%
2013101,234,941.6513.38%
2014119,748,181.4718.29%
2015132,820,361.4810.92%
2016150,175,708.0213.07%

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 Iba is 5 to 9, with 5,354 individuals. Conversely, the age group with the lowest population is 75 to 79, with 460 individuals.

details
Age groupPopulation (2015)
Under 1994
1 to 44,407
5 to 95,354
10 to 144,951
15 to 194,962
20 to 244,338
25 to 293,958
30 to 343,596
35 to 393,383
40 to 442,860
45 to 492,903
50 to 542,393
55 to 591,980
60 to 641,599
65 to 691,212
70 to 74681
75 to 79460
80 and over475
Total50,506

Historical population

The population of Iba grew from 14,555 in 1960 to 50,506 in 2015, an increase of 35,951 people. The latest census figures in 2015 denote a positive growth rate of 1.48%, or an increase of 3,745 people, from the previous population of 46,761 in 2010.

details
Census datePopulationGrowth rate
14,555
19,5212.91%
21,0201.50%
22,7911.63%
29,2212.52%
31,5031.42%
34,6782.08%
44,3443.45%
46,7611.95%
50,5061.48%

Location

The municipal center of Iba is situated at approximately 15° 20' North, 119° 59' East, in the island of Luzon. Elevation at these coordinates is estimated at 12.7 meters or 41.6 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 Iba are Olongapo, Mabalacat, Tarlac City, Angeles, San Carlos, and San Fernando. The nearest municipalities are Botolan, Palauig, Cabangan, Masinloc, San Felipe, and Candelaria. Its distance from the national capital is 135.02 kilometers (83.90 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

  • Olongapo, 63.83 kilometers (39.66 miles) to the South‑Southeast (S31°E)
  • Mabalacat, Pampanga, 64.90 kilometers (40.33 miles) to the East (S80°E)
  • Tarlac City, Tarlac, 67.91 kilometers (42.20 miles) to the East‑Northeast (N75°E)
  • Angeles, 68.63 kilometers (42.65 miles) to the East‑Southeast (S72°E)
  • San Carlos, Pangasinan, 77.42 kilometers (48.11 miles) to the North‑Northeast (N31°E)
  • San Fernando, Pampanga, 83.50 kilometers (51.88 miles) to the East‑Southeast (S67°E)

Distance from Manila: 135.02 kilometers (83.90 miles) to the Southeast (S53°E)

National rankings

  • Population (2015): 50,506, ranked 454 out of 1,634
  • Land area (2007): 59.22 square kilometers, ranked 680 out of 1,634
  • Population density (2015): 329 inhabitants per square kilometer, ranked 560 out of 1,634
  • Annual population growth rate (2010 to 2015): 1.48%, ranked 824 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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