Ilagan, Province of Isabela

Summary data
Type	city (component)
Island group	Luzon
Region	Cagayan Valley (Region II)
Province	Isabela
Barangay count	91
Postal code	3330
Coastal/Landlocked	coastal
Marine waterbodies	Philippine Sea
Philippine major island(s)	Luzon
Area (2013)	1,166.26 km² (450.30 sq mi)
Population (2020)	158,218
Density (2020)	136 / km² (351 / sq mi)
Coordinates	17° 9' North, 121° 53' East (17.1442, 121.8889)
Estimated elevation above sea level	52.9 meters (173.6 feet)

Ilagan is a coastal component city in the province of Isabela. It serves as the provincial capital.

The city has a land area of 1,166.26 square kilometers or 450.30 square miles which constitutes 8.90% of Isabela's total area. Its population as determined by the 2020 Census was 158,218. This represented 9.32% of the total population of Isabela province, or 4.29% of the overall population of the Cagayan Valley region. Based on these figures, the population density is computed at 136 inhabitants per square kilometer or 351 inhabitants per square mile.

Barangays

Ilagan has 91 barangays as shown in the following table.

Demographic profile of barangays

Local government units of Ilagan
Barangay	Population percentage (2020)	Population (2020)	Population (2015)	Change (2015‑2020)	Annual Population Growth Rate (2015‑2020)
Aggasian	2.55%	4,032	3,629	11.10%	2.24%
Alibagu	5.00%	7,916	6,928	14.26%	2.85%
Allinguigan 1st	1.21%	1,909	1,896	0.69%	0.14%
Allinguigan 2nd	1.94%	3,074	2,914	5.49%	1.13%
Allinguigan 3rd	0.85%	1,352	1,229	10.01%	2.03%
Arusip	0.57%	901	919	-1.96%	-0.42%
Baculod	2.70%	4,266	4,090	4.30%	0.89%
Bagong Silang	0.43%	676	578	16.96%	3.35%
Bagumbayan	1.47%	2,321	2,286	1.53%	0.32%
Baligatan	1.72%	2,714	2,104	28.99%	5.50%
Ballacong	0.52%	824	764	7.85%	1.60%
Bangag	0.83%	1,307	1,219	7.22%	1.48%
Batong-Labang	1.48%	2,348	2,314	1.47%	0.31%
Bigao	1.07%	1,697	1,590	6.73%	1.38%
Cabannungan 1st	0.60%	956	756	26.46%	5.06%
Cabannungan 2nd	1.17%	1,852	1,822	1.65%	0.34%
Cabeseria 10	1.47%	2,319	1,960	18.32%	3.60%
Cabeseria 14 and 16	1.64%	2,600	2,530	2.77%	0.58%
Cabeseria 17 and 21	0.89%	1,401	1,235	13.44%	2.69%
Cabeseria 19	0.57%	906	818	10.76%	2.17%
Cabeseria 2	0.76%	1,198	1,125	6.49%	1.33%
Cabeseria 22	0.64%	1,019	914	11.49%	2.32%
Cabeseria 23	0.60%	956	943	1.38%	0.29%
Cabeseria 25	0.71%	1,121	995	12.66%	2.54%
Cabeseria 27	0.64%	1,011	897	12.71%	2.55%
Cabeseria 3	0.60%	946	851	11.16%	2.25%
Cabeseria 4	0.44%	697	604	15.40%	3.06%
Cabeseria 5	0.56%	882	832	6.01%	1.24%
Cabeseria 6 & 24	0.75%	1,181	1,126	4.88%	1.01%
Cabeseria 7	0.55%	863	810	6.54%	1.34%
Cabeseria 9 and 11	1.07%	1,695	1,431	18.45%	3.63%
Cadu	0.42%	662	562	17.79%	3.51%
Calamagui 1st	2.48%	3,918	3,619	8.26%	1.68%
Calamagui 2nd	1.69%	2,671	3,109	-14.09%	-3.15%
Camunatan	0.59%	941	922	2.06%	0.43%
Capellan	1.96%	3,098	2,942	5.30%	1.09%
Capo	0.70%	1,106	992	11.49%	2.32%
Carikkikan Norte	0.34%	544	457	19.04%	3.74%
Carikkikan Sur	0.13%	208	173	20.23%	3.95%
Centro Poblacion	0.36%	568	497	14.29%	2.85%
Centro-San Antonio	2.93%	4,631	4,143	11.78%	2.37%
Fugu	1.17%	1,848	1,582	16.81%	3.33%
Fuyo	0.62%	977	850	14.94%	2.97%
Gayong-Gayong Norte	0.52%	815	792	2.90%	0.60%
Gayong-Gayong Sur	0.79%	1,256	1,204	4.32%	0.89%
Guinatan	1.08%	1,703	1,654	2.96%	0.62%
Imelda Bliss Village	5.03%	7,951	6,135	29.60%	5.61%
Lullutan	1.39%	2,197	2,340	-6.11%	-1.32%
Malalam	1.10%	1,743	1,839	-5.22%	-1.12%
Malasin	0.83%	1,307	1,251	4.48%	0.93%
Manaring	1.66%	2,634	2,399	9.80%	1.99%
Mangcuram	0.64%	1,011	973	3.91%	0.81%
Marana I	1.10%	1,746	1,551	12.57%	2.52%
Marana II	0.38%	594	582	2.06%	0.43%
Marana III	0.44%	693	619	11.95%	2.41%
Minabang	1.06%	1,678	1,505	11.50%	2.32%
Morado	0.68%	1,073	972	10.39%	2.10%
Naguilian Norte	2.04%	3,233	2,808	15.14%	3.01%
Naguilian Sur	0.82%	1,304	1,231	5.93%	1.22%
Namnama	0.76%	1,209	1,095	10.41%	2.11%
Nanaguan	0.39%	615	477	28.93%	5.49%
Osmeña	2.04%	3,225	3,347	-3.65%	-0.78%
Paliueg	0.98%	1,545	1,449	6.63%	1.36%
Pasa	0.70%	1,113	1,021	9.01%	1.83%
Pilar	0.59%	939	819	14.65%	2.92%
Quimalabasa	0.22%	349	368	-5.16%	-1.11%
Rang-ayan	1.05%	1,658	1,353	22.54%	4.37%
Rugao	0.79%	1,245	1,211	2.81%	0.58%
Salindingan	0.86%	1,368	1,312	4.27%	0.88%
San Andres	0.68%	1,083	1,072	1.03%	0.22%
San Felipe	0.94%	1,490	996	49.60%	8.85%
San Ignacio	2.05%	3,248	2,923	11.12%	2.24%
San Isidro	0.98%	1,547	1,415	9.33%	1.90%
San Juan	1.29%	2,041	1,906	7.08%	1.45%
San Lorenzo	0.81%	1,279	1,187	7.75%	1.58%
San Pablo	0.23%	362	362	0.00%	0.00%
San Rodrigo	0.86%	1,354	1,221	10.89%	2.20%
San Vicente	1.40%	2,214	2,439	-9.23%	-2.02%
Santa Barbara	0.70%	1,107	1,102	0.45%	0.10%
Santa Catalina	0.63%	991	891	11.22%	2.26%
Santa Isabel Norte	1.53%	2,428	2,296	5.75%	1.18%
Santa Isabel Sur	3.16%	5,002	4,612	8.46%	1.72%
Santa Maria	0.76%	1,208	1,232	-1.95%	-0.41%
Santa Victoria	1.02%	1,609	1,561	3.07%	0.64%
Santo Tomas	0.65%	1,021	893	14.33%	2.86%
Siffu	0.97%	1,533	1,482	3.44%	0.71%
Sindon Bayabo	1.55%	2,455	2,132	15.15%	3.01%
Sindon Maride	0.46%	732	688	6.40%	1.31%
Sipay	0.34%	544	645	-15.66%	-3.52%
Tangcul	0.82%	1,297	1,154	12.39%	2.49%
Villa Imelda	0.86%	1,357	1,095	23.93%	4.62%
Ilagan Total		158,218	145,568	8.69%	1.77%

Economy

The annual regular revenue of Ilagan for the fiscal year of 2016 was ₱1,220,169,017.17.

details

Annual regular income of Ilagan (2009‑2016)
Fiscal Year	Annual Regular Income	Change
2009	247,428,536.00	–
2010	408,613,841.77	65.14%
2011	420,733,560.33	2.97%
2012	317,491,073.04	-24.54%
2013	891,480,659.00	180.79%
2014	956,728,818.92	7.32%
2015	1,116,604,538.49	16.71%
2016	1,220,169,017.17	9.27%
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 Ilagan in the 2015 Census was 145,250 broken down into 34,669 households or an average of 4.19 members per household.

details

Number of households in Ilagan (1990‑2015)
Census date	Household population	Number of households	Average household size
1990 May 1	98,867	18,891	5.23
1995 Sep 1	106,394	21,621	4.92
2000 May 1	119,743	24,085	4.97
2007 Aug 1	131,030	28,858	4.54
2010 May 1	134,971	31,237	4.32
2015 Aug 1	145,250	34,669	4.19

Population by age group

According to the 2015 Census, the age group with the highest population in Ilagan is 5 to 9, with 14,538 individuals. Conversely, the age group with the lowest population is 80 and over, with 1,110 individuals.

details

Population of Ilagan by age group (2015 census)
Age group	Population (2015)	Age group percentage
Under 1	2,792	1.92%
1 to 4	11,607	7.97%
5 to 9	14,538	9.99%
10 to 14	13,908	9.55%
15 to 19	13,896	9.55%
20 to 24	13,845	9.51%
25 to 29	11,890	8.17%
30 to 34	10,550	7.25%
35 to 39	10,358	7.12%
40 to 44	9,367	6.43%
45 to 49	8,342	5.73%
50 to 54	7,230	4.97%
55 to 59	5,921	4.07%
60 to 64	4,415	3.03%
65 to 69	2,726	1.87%
70 to 74	1,760	1.21%
75 to 79	1,313	0.90%
80 and over	1,110	0.76%
Total	145,568	100.00%
Youth Dependency Ratio: 44.72 Old Age Dependency Ratio: 7.21 Total Dependency Ratio: 51.93 Median Age: 25.92

Historical population

The population of Ilagan grew from 16,008 in 1903 to 158,218 in 2020, an increase of 142,210 people over the course of 117 years. The latest census figures in 2020 denote a positive growth rate of 1.77%, or an increase of 12,650 people, from the previous population of 145,568 in 2015.

details

Population of Ilagan (1903‑2020)
Census date	Population	Growth rate
1903 Mar 2	16,008	–
1918 Dec 31	23,447	2.44%
1939 Jan 1	31,323	1.46%
1948 Oct 1	35,384	1.26%
1960 Feb 15	48,251	2.76%
1970 May 6	62,118	2.50%
1975 May 1	70,075	2.45%
1980 May 1	79,336	2.51%
1990 May 1	99,120	2.25%
1995 Sep 1	106,912	1.43%
2000 May 1	119,990	2.51%
2007 Aug 1	131,243	1.24%
2010 May 1	135,174	1.08%
2015 Aug 1	145,568	1.42%
2020 May 1	158,218	1.77%

The total number of registered voters or electorate in Ilagan for the year 2019 was 98,565, broken down into 48,283 males and 50,282 females.

Location

The city center of Ilagan is situated at approximately 17° 9' North, 121° 53' East, in the island of Luzon. Elevation at these coordinates is estimated at 52.9 meters or 173.6 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 Ilagan are Cauayan, Isabela, Tuguegarao, Cagayan, Tabuk, Kalinga, Santiago, Isabela, Candon, Ilocos Sur, and Baguio. The nearest municipalities are Gamu, Isabela, Naguilian, Isabela, Tumauini, Isabela, Quirino, Isabela, Reina Mercedes, Isabela, and Benito Soliven, Isabela. Its distance from the national capital is 298.87 kilometers (185.71 miles). The following list delineates such distance measurements.

great-circle distance

Nearest towns

Gamu, Isabela, 12.26 kilometers (7.62 miles) to the South‑Southwest (S29°W)
Naguilian, Isabela, 14.58 kilometers (9.06 miles) to the South‑Southwest (S23°W)
Tumauini, Isabela, 16.64 kilometers (10.34 miles) to the North‑Northwest (N30°W)
Quirino, Isabela, 16.30 kilometers (10.13 miles) to the West (S87°W)
Reina Mercedes, Isabela, 18.91 kilometers (11.75 miles) to the South‑Southwest (S21°W)
Benito Soliven, Isabela, 19.27 kilometers (11.97 miles) to the South‑Southeast (S24°E)

Nearest cities

Cauayan, Isabela, 26.63 kilometers (16.55 miles) to the South‑Southwest (S29°W)
Tuguegarao, Cagayan, 54.42 kilometers (33.82 miles) to the North‑Northwest (N18°W)
Tabuk, Kalinga, 57.75 kilometers (35.89 miles) to the Northwest (N51°W)
Santiago, Isabela, 62.41 kilometers (38.78 miles) to the Southwest (S36°W)
Candon, Ilocos Sur, 153.44 kilometers (95.35 miles) to the West (N88°W)
Baguio, 160.14 kilometers (99.50 miles) to the West‑Southwest (S60°W)

Distance from Manila: 298.87 kilometers (185.71 miles) to the South‑Southwest (S19°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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