- The population of Region I (Ilocos Region) as of August 1, 2015 was 5,026,128 based on the 2015 Census of Population (POPCEN 2015).
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Table 1. Population of Region I - Ilocos Region
(Based on the 2000, 2010, and 2015 Censuses)
|
Census Year |
Census Reference Date |
Population
(in millions) |
2000 |
May 1, 2000 |
4.20 |
2010 |
May 1, 2010 |
4.75 |
2015 |
August 1, 2015 |
5.03 |
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- The 2015 population of the region is higher by 277,756 compared with the population of 4.75 million in 2010, and by 825,650 compared with the population of 4.20 million in 2000. Refer to Table 1.
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- The population of Region I increased by 1.09 percent annually, on average, during the period 2010 to 2015. By comparison, the rate at which the region’s population grew during the period 2000 to 2010 was higher at 1.23 percent. See Table 2.
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Table 2. Annual Population Growth Rate of
Region I - Ilocos Region
(Based on the 2000, 2010, and 2015 Censuses) |
Reference Period |
Annual Population Growth Rate
(in percent) |
2010-2015 |
1.09 |
2000-2010 |
1.23 |
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- Among the four provinces comprising the region, Pangasinan had the biggest population in 2015 with 2.96 million, followed by La Union with 787 thousand, and Ilocos Sur with 690 thousand. Ilocos Norte had the smallest population with 593 thousand.
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- The total population of Region I accounted for about 5.0 percent of the Philippine population in 2015. Refer to Table 3.
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Table 3. Population by Province: Region I - Ilocos Region
(Based on the 2000, 2010, and 2015 Censuses) |
Province |
Population (in thousands) |
2000 |
2010 |
2015 |
Ilocos Norte |
514 |
568 |
593 |
Ilocos Sur |
594 |
659 |
690 |
La Union |
658 |
742 |
787 |
Pangasinan |
2,434 |
2,780 |
2,957 |
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- Pangasinan was the fastest growing province in the region with an average annual population growth rate (PGR) of 1.18 percent during the period 2010 to 2015. It was followed by La Union (1.12 percent) and Ilocos Sur (0.88 percent). Ilocos Norte posted the lowest PGR of 0.83 percent. See Table 4.
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Table 4. Annual Population Growth Rate by Province: Region I - Ilocos
(Based on the 2000, 2010, and 2015 Censuses) |
Province |
Population Growth Rate |
2010-2015 |
2000-2010 |
Ilocos Norte |
0.83 |
1.00 |
Ilocos Sur |
0.88 |
1.03 |
La Union |
1.12 |
1.21 |
Pangasinan |
1.18 |
1.34 |
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- Region I is composed of nine cities, 116 municipalities, and 3,265 barangays.
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- Among the cities and municipalities in the region, the largest in terms of population size is San Carlos City, Pangasinan with 188,571 persons. It was followed by two other cities in Pangasinan - Dagupan City (171,271) and the City of Urdaneta (132,940). Five other municipalities in Pangasinan and one city each in La Union and Ilocos Norte comprise the rest of the top ten most populous cities/municipalities in Region I. Refer to Table 5.
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Table 5. Top Ten Most Populous Cities/Municipalities: Region I - Ilocos Region, 2015 |
Rank |
City/Municipality |
Province |
Population |
1 |
San Carlos City |
Pangasinan |
188,571 |
2 |
Dagupan City |
Pangasinan |
171,271 |
3 |
City of Urdaneta |
Pangasinan |
132,940 |
4 |
Malasiqui |
Pangasinan |
130,275 |
5 |
City of San Fernando |
La Union |
121,812 |
6 |
Bayambang |
Pangasinan |
118,205 |
7 |
Laoag City |
Ilocos Norte |
111,125 |
8 |
Mangaldan |
Pangasinan |
106,331 |
9 |
Lingayen |
Pangasinan |
103,278 |
10 |
Calasiao |
Pangasinan |
95,154 |
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- Carasi in Ilocos Norte is the least populous city/municipality in Region I with 1,567 persons. It was followed by Adams, Ilocos Norte (1,792) and Sigay, Ilocos Sur (2,737). The rest of the ten least populous cities/municipalities in the region are located either in the province of Ilocos Norte or in the province of Ilocos Sur. See Table 6.
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Table 6. Ten Least Populous Cities/Municipalities: Region I - Ilocos Region, 2015 |
Rank |
City/Municipality |
Province |
Population |
1 |
Carasi |
Ilocos Norte |
1,567 |
2 |
Adams |
Ilocos Norte |
1,792 |
3 |
Sigay |
Ilocos Sur |
2,737 |
4 |
Dumalneg |
Ilocos Norte |
2,947 |
5 |
Sugpon |
Ilocos Sur |
4,585 |
6 |
Lidlidda |
Ilocos Sur |
4,647 |
7 |
Gregorio del Pilar (Concepcion) |
Ilocos Sur |
4,875 |
8 |
Nagbukel |
Ilocos Sur |
5,259 |
9 |
Alilem |
Ilocos Sur |
6,695 |
10 |
San Emilio |
Ilocos Sur |
7,407 |
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- Of the 3,265 barangays in Region I, the largest in terms of population size is Bonuan Gueset in Dagupan City, Pangasinan with 23,373 persons. It was followed by two other barangays in Dagupan City, Pangasinan - Pantal (17,841) and Bonuan Boquig (14,354). The rest of the top ten most populous barangays in the region are located either in the province of Pangasinan or in the province of La Union. Refer to Table 7.
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Table 7. Top Ten Most Populous Barangays: Region I - Ilocos Region, 2015 |
Rank |
Barangay |
City/Municipality/Province |
Population |
1 |
Bonuan Gueset |
Dagupan City, Pangasinan |
23,373 |
2 |
Pantal |
Dagupan City, Pangasinan |
17,841 |
3 |
Bonuan Boquig |
Dagupan City, Pangasinan |
14,354 |
4 |
Poblacion |
Lingayen, Pangasinan |
12,238 |
5 |
Sevilla |
City of San Fernando, La Union |
11,470 |
6 |
San Vicente |
City of Urdaneta, Pangasinan |
10,572 |
7 |
Poblacion |
City of Alaminos, Pangasinan |
10,302 |
8 |
Lucao |
Dagupan City, Pangasinan |
10,252 |
9 |
Poblacion |
Bugallon, Pangasinan |
9,999 |
10 |
Catbangen |
City of San Fernando, La Union |
9,781 |
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