Sigma, Province of Capiz

Summary data
Typemunicipality
Island groupVisayas
RegionWestern Visayas (Region VI)
ProvinceCapiz
Barangay count21
Postal code5816
Coastal/Landlockedlandlocked
Marine waterbodiesnone (landlocked)
Philippine major island(s)Panay
Area (2013)101.71 km2 (39.27 sq mi)
Population (2020)31,688
Density (2020)312 / km2 (807 / sq mi)
Coordinates11° 25' North, 122° 40' East (11.4211, 122.6658)
Estimated elevation above sea level15.0 meters (49.3 feet)

Sigma is a landlocked municipality in the coastal province of Capiz.

The municipality has a land area of 101.71 square kilometers or 39.27 square miles which constitutes 3.92% of Capiz's total area. Its population as determined by the 2020 Census was 31,688. This represented 3.94% of the total population of Capiz province, or 0.40% of the overall population of the Western Visayas region. Based on these figures, the population density is computed at 312 inhabitants per square kilometer or 807 inhabitants per square mile.

Barangays

Sigma has 21 barangays as shown in the following table.

Demographic profile of barangays
Local government units of Sigma
BarangayPopulation percentage (2020)Population (2020)Population (2015)Change (2015‑2020)Annual Population Growth Rate (2015‑2020)
Acbo3.41%1,0811,0176.29%1.29%
Amaga7.84%2,4832,2639.72%1.97%
Balucuan3.62%1,1471,185-3.21%-0.68%
Bangonbangon4.78%1,5161,29217.34%3.42%
Capuyhan2.01%63752521.33%4.15%
Cogon3.62%1,1461,0924.95%1.02%
Dayhagon2.90%9188695.64%1.16%
Guintas2.97%9428698.40%1.71%
Malapad Cogon4.54%1,4391,30810.02%2.03%
Mangoso8.28%2,6252,4835.72%1.18%
Mansacul3.46%1,09590520.99%4.09%
Matangcong3.99%1,2631,1569.26%1.88%
Matinabus3.51%1,1121,1100.18%0.04%
Mianay11.90%3,7713,6583.09%0.64%
Oyong3.72%1,1801,06810.49%2.12%
Pagbunitan3.98%1,2611,313-3.96%-0.85%
Parian10.49%3,3233,1136.75%1.38%
Pinamalatican2.69%85374913.89%2.77%
Poblacion Norte3.85%1,2211,408-13.28%-2.95%
Poblacion Sur5.75%1,8211,896-3.96%-0.85%
Tawog2.70%854855-0.12%-0.02%
Sigma Total31,68830,1345.16%1.06%

Economy

The annual regular revenue of Sigma for the fiscal year of 2016 was 86,181,293.77.

details
Annual regular income of Sigma (2009‑2016)
Fiscal YearAnnual Regular IncomeChange
200946,357,096.22
201049,147,050.026.02%
201154,302,882.9710.49%
201256,101,797.453.31%
201361,498,287.469.62%
201468,285,250.3311.04%
201578,517,344.5814.98%
201686,181,293.779.76%

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 Sigma in the 2015 Census was 30,134 broken down into 7,418 households or an average of 4.06 members per household.

details
Number of households in Sigma (1990‑2015)
Census dateHousehold populationNumber of householdsAverage household size
25,0844,7825.25
25,7965,0445.11
27,3595,5414.94
28,6916,1414.67
29,1316,6684.37
30,1347,4184.06

Population by age group

According to the 2015 Census, the age group with the highest population in Sigma is 15 to 19, with 3,070 individuals. Conversely, the age group with the lowest population is 75 to 79, with 430 individuals.

details
Population of Sigma by age group (2015 census)
Age groupPopulation (2015)Age group percentage
Under 14661.55%
1 to 42,2347.41%
5 to 92,8609.49%
10 to 142,8999.62%
15 to 193,07010.19%
20 to 242,8259.37%
25 to 292,2557.48%
30 to 342,0426.78%
35 to 391,9546.48%
40 to 441,7305.74%
45 to 491,5985.30%
50 to 541,5455.13%
55 to 591,3454.46%
60 to 641,1113.69%
65 to 697662.54%
70 to 745711.89%
75 to 794301.43%
80 and over4331.44%
Total30,134100.00%
  • Youth Dependency Ratio: 43.44
  • Old Age Dependency Ratio: 11.3
  • Total Dependency Ratio: 54.74
  • Median Age: 26.58

Historical population

The population of Sigma grew from 5,205 in 1903 to 31,688 in 2020, an increase of 26,483 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 1.06%, or an increase of 1,554 people, from the previous population of 30,134 in 2015.

details
Population of Sigma (1903‑2020)
Census datePopulationGrowth rate
5,205
8,3032.99%
10,6281.24%
10,8980.26%
12,6491.32%
15,9112.27%
18,5363.11%
20,0431.58%
25,0892.27%
25,8010.53%
27,3661.27%
28,7090.66%
29,1380.54%
30,1340.64%
31,6881.06%

The total number of registered voters or electorate in Sigma for the year 2019 was 22,137, broken down into 11,002 males and 11,135 females.

Location

The municipal center of Sigma is situated at approximately 11° 25' North, 122° 40' East, in the island of Panay. Elevation at these coordinates is estimated at 15.0 meters or 49.3 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 Sigma are Roxas City, Capiz, Passi, Iloilo, Victorias, Negros Occidental, Silay, Negros Occidental, Iloilo City, and Talisay, Negros Occidental. The nearest municipalities are Dao, Capiz, Mambusao, Capiz, Cuartero, Capiz, Sapian, Capiz, Ivisan, Capiz, and Panitan, Capiz. Its distance from the national capital is 395.46 kilometers (245.73 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

  • Dao, Capiz, 3.69 kilometers (2.29 miles) to the Southeast (S35°E)
  • Mambusao, Capiz, 7.84 kilometers (4.87 miles) to the West (N86°W)
  • Cuartero, Capiz, 8.86 kilometers (5.50 miles) to the South (S3°E)
  • Sapian, Capiz, 10.53 kilometers (6.54 miles) to the Northwest (N40°W)
  • Ivisan, Capiz, 11.45 kilometers (7.11 miles) to the North‑Northeast (N14°E)
  • Panitan, Capiz, 12.15 kilometers (7.55 miles) to the East‑Northeast (N67°E)

Nearest cities

Distance from Manila: 395.46 kilometers (245.73 miles) to the North‑Northwest (N27°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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