Iriga, Province of Camarines Sur

Summary data
Type	city (component)
Island group	Luzon
Region	Bicol Region (Region V)
Province	Camarines Sur
Barangay count	36
Postal code	4431
Coastal/Landlocked	landlocked
Marine waterbodies	none (landlocked)
Philippine major island(s)	Luzon
Area (2013)	137.35 km² (53.03 sq mi)
Population (2020)	114,457
Density (2020)	833 / km² (2,158 / sq mi)
Coordinates	13° 25' North, 123° 25' East (13.4222, 123.4129)
Estimated elevation above sea level	16.0 meters (52.5 feet)

Iriga is a landlocked component city in the coastal province of Camarines Sur.

The city has a land area of 137.35 square kilometers or 53.03 square miles which constitutes 2.49% of Camarines Sur's total area. Its population as determined by the 2020 Census was 114,457. This represented 5.53% of the total population of Camarines Sur province, or 1.88% of the overall population of the Bicol Region. Based on these figures, the population density is computed at 833 inhabitants per square kilometer or 2,158 inhabitants per square mile.

Barangays

Iriga has 36 barangays as shown in the following table.

Demographic profile of barangays

Local government units of Iriga
Barangay	Population percentage (2020)	Population (2020)	Population (2015)	Change (2015‑2020)	Annual Population Growth Rate (2015‑2020)
Antipolo	0.71%	812	1,301	-37.59%	-9.45%
Cristo Rey	1.06%	1,214	1,078	12.62%	2.53%
Del Rosario	1.77%	2,029	2,147	-5.50%	-1.18%
Francia	2.30%	2,632	2,608	0.92%	0.19%
La Anunciacion	1.44%	1,647	1,697	-2.95%	-0.63%
La Medalla	2.24%	2,564	2,406	6.57%	1.35%
La Purisima	2.77%	3,174	2,506	26.66%	5.10%
La Trinidad	1.84%	2,108	1,873	12.55%	2.52%
Niño Jesus	0.78%	897	1,021	-12.14%	-2.69%
Perpetual Help	3.84%	4,390	4,208	4.33%	0.90%
Sagrada	1.79%	2,051	2,359	-13.06%	-2.90%
Salvacion	3.17%	3,624	3,417	6.06%	1.25%
San Agustin	5.95%	6,805	6,403	6.28%	1.29%
San Andres	0.54%	622	835	-25.51%	-6.01%
San Antonio	3.56%	4,074	4,225	-3.57%	-0.76%
San Francisco	5.62%	6,438	6,479	-0.63%	-0.13%
San Isidro	8.33%	9,538	8,909	7.06%	1.45%
San Jose	2.73%	3,123	2,405	29.85%	5.65%
San Juan	3.91%	4,473	4,584	-2.42%	-0.51%
San Miguel	2.90%	3,314	3,298	0.49%	0.10%
San Nicolas	10.19%	11,665	11,313	3.11%	0.65%
San Pedro	1.94%	2,217	2,180	1.70%	0.35%
San Rafael	0.65%	745	864	-13.77%	-3.07%
San Ramon	1.56%	1,790	1,704	5.05%	1.04%
San Roque	2.05%	2,342	2,459	-4.76%	-1.02%
San Vicente Norte	0.74%	850	947	-10.24%	-2.25%
San Vicente Sur	2.41%	2,761	2,939	-6.06%	-1.31%
Santa Cruz Norte	0.60%	692	540	28.15%	5.36%
Santa Cruz Sur	2.68%	3,064	3,210	-4.55%	-0.98%
Santa Elena	2.21%	2,529	2,291	10.39%	2.10%
Santa Isabel	0.60%	686	612	12.09%	2.43%
Santa Maria	2.91%	3,326	3,312	0.42%	0.09%
Santa Teresita	2.69%	3,083	2,602	18.49%	3.63%
Santiago	2.54%	2,909	3,416	-14.84%	-3.33%
Santo Domingo	5.75%	6,584	5,922	11.18%	2.26%
Santo Niño	3.22%	3,685	3,687	-0.05%	-0.01%
Iriga Total		114,457	111,757	2.42%	0.50%

Economy

The annual regular revenue of Iriga for the fiscal year of 2016 was ₱472,025,392.29.

Historical annual regular income data

Annual regular income of Iriga (2009‑2016)
Fiscal Year	Annual Regular Income	Change
2009	292,158,923.02	–
2010	324,155,505.97	10.95%
2011	357,554,476.29	10.30%
2012	312,490,849.90	-12.60%
2013	341,410,395.18	9.25%
2014	382,892,282.49	12.15%
2015	427,958,455.04	11.77%
2016	472,025,392.29	10.30%
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 Iriga in the 2015 Census was 111,225 broken down into 21,840 households or an average of 5.09 members per household.

Trends in household population and size

Number of households in Iriga (1990‑2015)
Census date	Household population	Number of households	Average household size
1990 May 1	74,000	13,462	5.50
1995 Sep 1	82,229	15,581	5.28
2000 May 1	88,623	17,061	5.19
2007 Aug 1	97,527	19,298	5.05
2010 May 1	105,456	21,759	4.85
2015 Aug 1	111,225	21,840	5.09

Population by age group

According to the 2015 Census, the age group with the highest population in Iriga is 10 to 14, with 12,973 individuals. Conversely, the age group with the lowest population is 80 and over, with 1,055 individuals.

Age distribution

Population of Iriga by age group (2015 census)
Age group	Population (2015)	Age group percentage
Under 1	2,261	2.02%
1 to 4	9,579	8.57%
5 to 9	12,468	11.16%
10 to 14	12,973	11.61%
15 to 19	11,769	10.53%
20 to 24	9,679	8.66%
25 to 29	8,488	7.60%
30 to 34	7,443	6.66%
35 to 39	7,037	6.30%
40 to 44	6,143	5.50%
45 to 49	5,629	5.04%
50 to 54	4,911	4.39%
55 to 59	4,018	3.60%
60 to 64	3,161	2.83%
65 to 69	2,437	2.18%
70 to 74	1,587	1.42%
75 to 79	1,119	1.00%
80 and over	1,055	0.94%
Total	111,757	100.00%
Youth Dependency Ratio: 54.6 Old Age Dependency Ratio: 9.08 Total Dependency Ratio: 63.68 Median Age: 23.53

Historical population

The population of Iriga grew from 19,297 in 1903 to 114,457 in 2020, an increase of 95,160 people over the course of 117 years. The latest census figures in 2020 denote a positive annualized growth rate of 0.50%, or an increase of 2,700 people, from the previous population of 111,757 in 2015.

Trends in population growth

Population of Iriga (1903‑2020)
Census date	Population	Annualized Growth Rate
1903 Mar 2	19,297	–
1918 Dec 31	24,145	1.43%
1939 Jan 1	31,005	1.26%
1948 Oct 1	42,049	3.18%
1960 Feb 15	75,439	5.27%
1970 May 6	77,382	0.25%
1975 May 1	75,885	-0.39%
1980 May 1	66,113	-2.72%
1990 May 1	74,269	1.17%
1995 Sep 1	82,482	1.98%
2000 May 1	88,893	1.62%
2007 Aug 1	97,983	1.35%
2010 May 1	105,919	2.88%
2015 Aug 1	111,757	1.03%
2020 May 1	114,457	0.50%

The total number of registered voters or electorate in Iriga for the year 2019 was 65,261, broken down into 31,316 males and 33,945 females.

Location

The city center of Iriga is situated at approximately 13° 25' North, 123° 25' East, in the island of Luzon. Elevation at these coordinates is estimated at 16.0 meters or 52.5 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 Iriga are Ligao, Albay, Naga, Camarines Sur, Tabaco, Albay, Legazpi, Albay, Sorsogon City, Sorsogon, and Masbate City, Masbate. The nearest municipalities are Nabua, Camarines Sur, Baao, Camarines Sur, Bato, Camarines Sur, Buhi, Camarines Sur, Libon, Albay, and Bula, Camarines Sur. Its distance from the national capital is 292.90 kilometers (182.00 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Nabua, Camarines Sur, 4.59 kilometers (2.85 miles) to the West‑Southwest (S69°W)
Baao, Camarines Sur, 6.16 kilometers (3.83 miles) to the Northwest (N56°W)
Bato, Camarines Sur, 9.04 kilometers (5.61 miles) to the Southwest (S35°W)
Buhi, Camarines Sur, 11.30 kilometers (7.02 miles) to the East (N83°E)
Libon, Albay, 13.82 kilometers (8.59 miles) to the South‑Southeast (S11°E)
Bula, Camarines Sur, 15.33 kilometers (9.53 miles) to the West‑Northwest (N70°W)

Nearest cities

Ligao, Albay, 24.15 kilometers (15.00 miles) to the Southeast (S34°E)
Naga, Camarines Sur, 33.20 kilometers (20.63 miles) to the Northwest (N48°W)
Tabaco, Albay, 35.02 kilometers (21.76 miles) to the East‑Southeast (S78°E)
Legazpi, Albay, 46.86 kilometers (29.12 miles) to the Southeast (S48°E)
Sorsogon City, Sorsogon, 81.35 kilometers (50.55 miles) to the Southeast (S52°E)
Masbate City, Masbate, 118.68 kilometers (73.75 miles) to the South (S11°E)

Distance from Manila: 292.90 kilometers (182.00 miles) to the West‑Northwest (N63°W)

Notes

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

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