Isabela

Summary data
Map of the Philippines highlighting Isabela
Typeprovince
Island groupLuzon
RegionCagayan Valley (Region II)
Cities3
Municipalities35
Barangays1,055
Coastal/Landlockedcoastal
Marine waterbodiesPhilippine Sea
Area (2007)12,414.93 km2 (4,793.43 sq mi)
Population (2015)1,593,566
Density (2015)128 / km2 (332 / sq mi)

Isabela is a province in the Philippines situated in the Cagayan Valley region occupying the northeastern section of Luzon. Its capital is the City of Ilagan.

The province has a land area of 12,414.93 square kilometers or 4,793.43 square miles. Its population as determined by the 2015 Census was 1,593,566. This represented 46.17% of the total population of the Cagayan Valley region, 2.77% of the overall population of the Luzon island group, or 1.58% of the entire population of the Philippines. Based on these figures, the population density is computed at 128 inhabitants per square kilometer or 332 inhabitants per square mile.

Map

Isabela is bordered, clockwise from the North, by Cagayan, Philippine Sea, Aurora, Quirino, Nueva Vizcaya, and Ifugao, Mountain Province, Kalinga.

details

Local government units

Isabela has 35 municipalities and 3 cities. The total number of barangays in the province is 1,055.

details
NameTypePopulation (2015)Population (2010)Annual Population Growth Rate (2010‑2015)Area (2007)Density (2015)Brgy count
Aliciamunicipality71,50464,6871.93%154.10 km2 (59.50 sq mi)464 / km2 (1,202 / sq mi)34
Angadananmunicipality43,06140,1431.34%204.40 km2 (78.92 sq mi)211 / km2 (546 / sq mi)59
Auroramunicipality35,01733,0451.11%115.56 km2 (44.62 sq mi)303 / km2 (785 / sq mi)33
Benito Solivenmunicipality29,62427,3371.54%184.40 km2 (71.20 sq mi)161 / km2 (416 / sq mi)29
Burgosmunicipality23,78422,5211.04%73.10 km2 (28.22 sq mi)325 / km2 (843 / sq mi)14
Cabaganmunicipality50,17445,7321.78%430.40 km2 (166.18 sq mi)117 / km2 (302 / sq mi)26
Cabatuanmunicipality39,41337,2991.06%72.00 km2 (27.80 sq mi)547 / km2 (1,418 / sq mi)22
Cauayancity (CC)129,523122,3351.09%336.40 km2 (129.88 sq mi)385 / km2 (997 / sq mi)65
Cordonmunicipality42,92640,8770.94%144.00 km2 (55.60 sq mi)298 / km2 (772 / sq mi)26
Delfin Albanomunicipality26,61425,4220.88%189.00 km2 (72.97 sq mi)141 / km2 (365 / sq mi)29
Dinapiguemunicipality5,0055,484-1.73%574.40 km2 (221.78 sq mi)9 / km2 (23 / sq mi)6
Divilacanmunicipality5,6875,0342.35%889.49 km2 (343.43 sq mi)6 / km2 (17 / sq mi)12
Echaguemunicipality79,09474,6801.10%680.80 km2 (262.86 sq mi)116 / km2 (301 / sq mi)64
Gamumunicipality29,90428,6570.81%129.40 km2 (49.96 sq mi)231 / km2 (599 / sq mi)16
Ilagancity (CC), capital145,568135,1741.42%1,166.26 km2 (450.30 sq mi)125 / km2 (323 / sq mi)91
Jonesmunicipality45,66644,2180.62%670.14 km2 (258.74 sq mi)68 / km2 (176 / sq mi)42
Lunamunicipality19,32618,0911.27%45.70 km2 (17.64 sq mi)423 / km2 (1,096 / sq mi)19
Maconaconmunicipality4,2533,6153.14%538.66 km2 (207.98 sq mi)8 / km2 (20 / sq mi)10
Malligmunicipality30,45928,3451.38%133.40 km2 (51.51 sq mi)228 / km2 (591 / sq mi)18
Naguilianmunicipality31,90229,4911.51%169.81 km2 (65.56 sq mi)188 / km2 (487 / sq mi)25
Palananmunicipality17,26016,0941.34%880.24 km2 (339.86 sq mi)20 / km2 (51 / sq mi)17
Quezonmunicipality25,86024,5221.02%189.90 km2 (73.32 sq mi)136 / km2 (353 / sq mi)15
Quirinomunicipality24,50122,2851.82%126.20 km2 (48.73 sq mi)194 / km2 (503 / sq mi)21
Ramonmunicipality52,70749,8121.08%135.17 km2 (52.19 sq mi)390 / km2 (1,010 / sq mi)19
Reina Mercedesmunicipality26,99823,4972.68%57.14 km2 (22.06 sq mi)472 / km2 (1,224 / sq mi)20
Roxasmunicipality61,77357,6991.31%184.80 km2 (71.35 sq mi)334 / km2 (866 / sq mi)26
San Agustinmunicipality22,88021,7970.93%278.40 km2 (107.49 sq mi)82 / km2 (213 / sq mi)23
San Guillermomunicipality20,20018,4231.77%325.49 km2 (125.67 sq mi)62 / km2 (161 / sq mi)26
San Isidromunicipality24,86122,7581.70%71.90 km2 (27.76 sq mi)346 / km2 (896 / sq mi)13
San Manuelmunicipality31,89630,4070.91%112.77 km2 (43.54 sq mi)283 / km2 (733 / sq mi)19
San Marianomunicipality55,37051,4381.41%1,469.50 km2 (567.38 sq mi)38 / km2 (98 / sq mi)36
San Mateomunicipality64,50560,7921.14%120.60 km2 (46.56 sq mi)535 / km2 (1,385 / sq mi)33
San Pablomunicipality25,38422,0402.73%637.90 km2 (246.29 sq mi)40 / km2 (103 / sq mi)17
Santa Mariamunicipality25,38222,9391.95%140.00 km2 (54.05 sq mi)181 / km2 (470 / sq mi)20
Santiagocity (ICC)134,830132,8040.29%255.50 km2 (98.65 sq mi)528 / km2 (1,367 / sq mi)37
Santo Tomasmunicipality23,00521,6881.13%60.70 km2 (23.44 sq mi)379 / km2 (981 / sq mi)27
Tumauinimunicipality67,65058,4632.82%467.30 km2 (180.43 sq mi)145 / km2 (375 / sq mi)46
Isabela Total1,593,5661,489,6451.29%12,414.93 km2 (4,793.43 sq mi)128 / km2 (332 / sq mi)1,055

Historical population

The population of Isabela grew from 442,062 in 1960 to 1,593,566 in 2015, an increase of 1,151,504 people. The latest census figures in 2015 denote a positive growth rate of 1.29%, or an increase of 103,921 people, from the previous population of 1,489,645 in 2010.

details
Census datePopulationGrowth rate
76,431
112,9602.50%
219,8643.39%
264,4951.91%
442,0624.62%
648,1233.81%
730,3862.43%
870,6043.57%
1,080,3412.18%
1,160,7211.35%
1,287,5752.25%
1,401,4951.18%
1,489,6452.25%
1,593,5661.29%

National roads

As of December 2016, the National Roads in Isabela as classified by the Department of Public Works and Highways are:

Primary Roads

  • Cauayan-Cabatuan Road
  • Daang Maharlika (LZ)
  • Santiago-Tuguegarao By-Pass Road
  • Santiago-Tuguegarao Road

Secondary Roads

  • Cabagan-Santa Maria Road
  • Cordon-Diffun Road
  • Junction National-Potia Road

Tertiary Roads

  • Abbut-Agbannawag Road
  • Alicia-San Mateo Road
  • Burgos-Gen. Aguinaldo (NIA) Road
  • Calamagui-Ilagan Road
  • Cauayan-Poblacion Road
  • Echague-Poblacion Road
  • Gamu-Roxas Road
  • Ilagan-Bigao-Palanan Road
  • Ilagan-Delfin Albano-Mallig Road
  • Junction Delfin Albano Road
  • Junction Ipil-Quirino Boundary Road
  • Junction National-Calamagui Road
  • Junction National-Santa Victoria Road
  • Naguilian-San Mariano Road
  • Old CVR-Cabagan Road
  • Old CVR-San Pablo Road
  • Santiago-Baluarte-Quirino Boundary

National rankings

  • Population (2015): 1,593,566, ranked 15 out of 81
  • Land area (2007): 4,793.43 square kilometers, ranked 3 out of 81
  • Population density (2015): 128 inhabitants per square kilometer, ranked 61 out of 81
  • Annual population growth rate (2010 to 2015): 1.29%, ranked 44 out of 81

Notes

  1. Unless otherwise specified, population count (excluding percentages) and land area figures are derived from the Philippine Statistics Authority.
  2. Maps utilize OpenStreetMap data available under the Open Data Commons Open Database License.
  3. Data on National Roads is from the Department of Public Works and Highways.
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