Isabela, Province of Negros Occidental

Summary data
Typemunicipality
Island groupVisayas
RegionWestern Visayas (Region VI)
ProvinceNegros Occidental
Barangay count30
Postal code6128
Coastal/Landlockedlandlocked
Marine waterbodiesnone (landlocked)
Philippine major island(s)Negros
Area (2013)178.76 km2 (69.02 sq mi)
Population (2020)64,516
Density (2020)361 / km2 (935 / sq mi)
Coordinates10° 12' North, 122° 59' East (10.2036, 122.9881)
Estimated elevation above sea level29.0 meters (95.1 feet)

Isabela is a landlocked municipality in the coastal province of Negros Occidental.

The municipality has a land area of 178.76 square kilometers or 69.02 square miles which constitutes 2.28% of Negros Occidental's total area. Its population as determined by the 2020 Census was 64,516. This represented 2.46% of the total population of Negros Occidental province, or 0.81% of the overall population of the Western Visayas region. Based on these figures, the population density is computed at 361 inhabitants per square kilometer or 935 inhabitants per square mile.

Barangays

Isabela has 30 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Isabela
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Amin2.06%1,3321,3181.06%0.22%
Banogbanog2.21%1,4271,3773.63%0.75%
Barangay 12.40%1,5471,5470.00%0.00%
Barangay 21.68%1,0821,335-18.95%-4.33%
Barangay 31.37%886917-3.38%-0.72%
Barangay 41.57%1,0131,097-7.66%-1.66%
Barangay 52.84%1,8341,941-5.51%-1.19%
Barangay 61.10%710763-6.95%-1.50%
Barangay 71.31%845907-6.84%-1.48%
Barangay 82.66%1,7161,804-4.88%-1.05%
Barangay 93.34%2,1542,405-10.44%-2.29%
Bulad4.67%3,0103,0070.10%0.02%
Bungahin2.53%1,6311,5942.32%0.48%
Cabcab2.69%1,7361,51914.29%2.85%
Camangcamang9.46%6,1055,6078.88%1.81%
Camp Clark1.81%1,1671,186-1.60%-0.34%
Cansalongon5.36%3,4612,68129.09%5.52%
Guintubhan5.00%3,2272,87412.28%2.47%
Libas2.15%1,3841,404-1.42%-0.30%
Limalima2.11%1,3641,400-2.57%-0.55%
Makilignit1.33%857877-2.28%-0.48%
Mansablay6.58%4,2433,46222.56%4.37%
Maytubig3.07%1,9781,8646.12%1.26%
Panaquiao2.01%1,2941,2325.03%1.04%
Riverside3.08%1,9842,006-1.10%-0.23%
Rumirang3.18%2,0491,81313.02%2.61%
San Agustin5.58%3,6023,778-4.66%-1.00%
Sebucawan3.52%2,2722,01712.64%2.54%
Sikatuna4.05%2,6162,20218.80%3.69%
Tinongan9.28%5,9906,212-3.57%-0.76%
Isabela Total64,51662,1463.81%0.79%

Economy

The annual regular revenue of Isabela for the fiscal year of 2016 was 135,452,509.52.

details
Annual regular income of Isabela (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200977,160,856.45
201080,998,324.784.97%
201191,432,398.6212.88%
201291,465,038.390.04%
201398,680,814.727.89%
2014110,703,414.6812.18%
2015125,082,947.2712.99%
2016135,452,509.528.29%

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

Households

The household population of Isabela in the 2015 Census was 62,043 broken down into 13,801 households or an average of 4.50 members per household.

details
Number of households in Isabela (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
46,9908,3545.62
48,9729,3795.22
48,6989,4695.14
58,75911,5095.11
59,48712,3714.81
62,04313,8014.50

Population by age group

According to the 2015 Census, the age group with the highest population in Isabela is 5 to 9, with 7,247 individuals. Conversely, the age group with the lowest population is 80 and over, with 547 individuals.

details
Population of Isabela by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 11,2442.00%
1 to 45,6599.11%
5 to 97,24711.66%
10 to 146,89711.10%
15 to 196,53410.51%
20 to 245,8659.44%
25 to 294,6827.53%
30 to 343,9796.40%
35 to 393,5775.76%
40 to 443,2735.27%
45 to 493,1365.05%
50 to 542,7264.39%
55 to 592,3893.84%
60 to 641,7812.87%
65 to 691,1931.92%
70 to 748531.37%
75 to 795640.91%
80 and over5470.88%
Total62,146100.00%
  • Youth Dependency Ratio: 55.47
  • Old Age Dependency Ratio: 8.32
  • Total Dependency Ratio: 63.79
  • Median Age: 22.98

Historical population

The population of Isabela grew from 12,836 in 1903 to 64,516 in 2020, an increase of 51,680 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 0.79%, or an increase of 2,370 people, from the previous population of 62,146 in 2015.

details
Population of Isabela (1903‑2020)
Census datePopulationGrowth rate
12,836
19,6532.73%
43,5094.05%
33,743-2.57%
29,769-1.10%
33,6361.20%
37,4002.15%
39,7041.20%
47,0101.70%
49,0190.79%
48,719-0.13%
58,8192.63%
59,5230.43%
62,1460.82%
64,5160.79%

The total number of registered voters or electorate in Isabela for the year 2019 was 40,017, broken down into 20,232 males and 19,785 females.

Location

The municipal center of Isabela is situated at approximately 10° 12' North, 122° 59' East, in the island of Negros. Elevation at these coordinates is estimated at 29.0 meters or 95.1 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 are Himamaylan, Negros Occidental, La Carlota, Negros Occidental, Kabankalan, Negros Occidental, Canlaon, Negros Oriental, Guihulngan, Negros Oriental, and Bago, Negros Occidental. The nearest municipalities are Moises Padilla, Negros Occidental, La Castellana, Negros Occidental, Binalbagan, Negros Occidental, Hinigaran, Negros Occidental, Pontevedra, Negros Occidental, and San Enrique, Negros Occidental. Its distance from the national capital is 532.16 kilometers (330.67 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nearest cities

Distance from Manila: 532.16 kilometers (330.67 miles) to the North‑Northwest (N24°W)

Notes

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