Zambales

Summary data
Map of the Philippines highlighting Zambales
Typeprovince
Island groupLuzon
RegionCentral Luzon (Region III)
Highly urbanized cities1
Cities0
Municipalities13
Barangays [note]230
Coastal/Landlockedcoastal
Marine waterbodiesSouth China Sea
Area (2013) [note]3,630.35 km2 (1,401.69 sq mi)
Population (2020) [note]649,615
Density (2020) [note]179 / km2 (463 / sq mi)
[note] Figures exclude highly urbanized cities

Zambales is a province in the Philippines situated in the Central Luzon region occupying the central section of Luzon. Its capital is the Municipality of Iba.

The province has a land area of 3,630.35 square kilometers or 1,401.69 square miles. Its population as determined by the 2020 Census was 649,615. This represented 5.23% of the total population of the Central Luzon region, 1.04% of the overall population of the Luzon island group, or 0.60% of the entire population of the Philippines. Based on these figures, the population density is computed at 179 inhabitants per square kilometer or 463 inhabitants per square mile.

Map

Zambales is bordered, clockwise from the North, by Pangasinan, Tarlac, Pampanga, Bataan, and the South China Sea.

details
Map of the Philippines with Zambales highlighted in redMap of Zambales showing its cities and component municipalitiesBotolanCabanganCandelariaCastillejosIbaMasinlocOlongapoPalauigSan AntonioSan FelipeSan MarcelinoSan NarcisoSanta CruzSubic

Local government units

Zambales has 13 municipalities. The total number of barangays in the province is 230. The City of Olongapo is commonly grouped with the province, although it is administratively independent due to its distinction as a highly urbanized city.

details
Local government units of Zambales
NameTypePopulation (2020)Population (2015)Annual Population Growth Rate (2015‑2020)Area (2013), in km2Density (2020), per km2Brgy count
Botolanmunicipality66,73957,7073.11%735.289131
Cabanganmunicipality28,11825,1632.37%175.2916022
Candelariamunicipality30,26327,1742.29%333.599116
Castillejosmunicipality67,88964,8410.97%92.9973014
Ibamunicipality, capital55,58150,5062.04%153.3836214
Masinlocmunicipality54,52947,7192.85%316.0217313
Palauigmunicipality39,78434,9472.77%310.0012819
San Antoniomunicipality37,45034,6611.64%188.1219914
San Felipemunicipality25,03323,1831.63%111.6022411
San Marcelinomunicipality37,71933,6652.42%416.869018
San Narcisomunicipality30,75928,3601.72%71.6043017
Santa Cruzmunicipality63,83958,1511.98%438.4614625
Subicmunicipality111,912104,7711.40%287.1639016
Zambales Total649,615590,8482.02%3,630.35179230

Economy

The annual regular revenue of Zambales for the fiscal year of 2016 was ₱1,098,931,241.67.

Historical annual regular income data

Annual regular income of Zambales (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
2009643,966,391.25–
2010655,308,121.311.76%
2011741,893,718.4213.21%
2012729,926,753.17-1.61%
2013786,447,180.367.74%
2014894,062,431.9013.68%
2015995,974,062.4111.40%
20161,098,931,241.6710.34%

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 Zambales is 5 to 9, with 85,475 individuals. Conversely, the age group with the lowest population is 80 and over, with 7,003 individuals.

Age distribution

Population of Zambales by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 117,6472.14%
1 to 471,7048.70%
5 to 985,47510.37%
10 to 1480,5129.77%
15 to 1978,3109.50%
20 to 2475,3439.14%
25 to 2971,1588.64%
30 to 3460,3487.32%
35 to 3954,1096.57%
40 to 4447,6765.79%
45 to 4944,7585.43%
50 to 5437,7234.58%
55 to 5931,4223.81%
60 to 6424,5992.99%
65 to 6918,2672.22%
70 to 7410,3451.26%
75 to 797,4890.91%
80 and over7,0030.85%
Total823,888100.00%
  • Youth Dependency Ratio: 48.59
  • Old Age Dependency Ratio: 8.2
  • Total Dependency Ratio: 56.79
  • Median Age: 25.21

Historical population

The population of Zambales grew from 59,930 in 1903 to 649,615 in 2020, an increase of 589,685 people over the course of 117 years. The latest census figures in 2020 denote a positive annualized growth rate of 2.02%, or an increase of 58,767 people, from the previous population of 590,848 in 2015.

Trends in population growth

Population of Zambales (1903‑2020)
Census datePopulationAnnualized Growth Rate
59,930–
83,7502.14%
106,9451.23%
138,5362.69%
168,1121.72%
235,2493.34%
269,1712.74%
287,6071.33%
369,6652.54%
389,5120.98%
433,5422.32%
493,0851.79%
534,4432.98%
590,8481.93%
649,6152.02%

The total number of registered voters or electorate in Zambales for the year 2019 was 515,724.

National roads

As of December 2016, the National Roads in Zambales are:

  • Baler-Airport Road
  • Baler-Casiguran Road (Baler-Dinadiawan)
  • Baler-Casiguran Road (Dinadiawan-Casiguran Section)
  • Dinadiawan-Madella Road
  • Dingalan-Gabaldon Road
  • Nueva Ecija-Aurora Road

Tertiary Roads

  • A. Castañeda-Ma. Aurora-San Luis Road
  • Baler-Airport Road
  • Baler-Cemento via Dicaloyungan
  • Nueva Ecija-Aurora Road (Baler-Cemento Section)

Notes

  1. Unless otherwise specified, population count (excluding percentages) and land area figures are derived from the Philippine Statistics Authority.
  2. Data on registered voters is from the Commission on Elections.
  3. Maps utilize OpenStreetMap data available under the Open Data Commons Open Database License.
  4. Data on National Roads is from the Department of Public Works and Highways.
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