Population of Region I - Ilocos Region (Based on the 2015 Census of Population)

Reference Number: 

2016-064

Release Date: 

Wednesday, June 1, 2016
  • 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).

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
  • 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.
  • 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.
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
  • 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.
  • The total population of Region I accounted for about 5.0 percent of the Philippine population in 2015. Refer to Table 3.
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
  • 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.
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
  • Region I is composed of nine cities, 116 municipalities, and 3,265 barangays.
  • 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.
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
  • 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.
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
  • 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.
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

 

Download: Total Population by City, Municipality, and Barangay of Region I - Ilocos

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Edition: 

2015