Cagdianao, Dinagat Islands

Cagdianao, officially the Municipality of Cagdianao, is a 3rd class municipality in the province of Dinagat Islands, Philippines. According to the 2015 census, it has a population of 16,808 people.[3]

Municipality of Cagdianao
Map of Dinagat Islands with Cagdianao highlighted
Location within the Philippines
Coordinates: 9°55′N 125°40′E
Country Philippines
RegionCaraga (Region XIII)
ProvinceDinagat Islands
DistrictLone District
FoundedDecember 23, 1959
Barangays14 (see Barangays)
  TypeSangguniang Bayan
  MayorAdolfo E. Longos
  Vice MayorRufino P. Fermilan Jr.
  CongressmanAlan 1 B. Ecleo
  Electorate12,774 voters (2019)
  Total249.48 km2 (96.32 sq mi)
 (2015 census)[3]
  Density67/km2 (170/sq mi)
  Income class3rd municipal income class
  Poverty incidence45.03% (2015)[4]
  Revenue (₱)153,289,311.16 (2016)
Time zoneUTC+8 (PST)
ZIP code
IDD:area code+63(0)86
Climate typetropical monsoon climate
Native languagesSurigaonon


Cagdianao is derived from kagdianao, an alternate form of kaagdao-an, meaning "place where mangroves grow", from agdao, a local name for a species of mangrove.[5]


The town became a part of the province of Dinagat Islands in December 2006, when the province was created from Surigao del Norte by Republic Act No. 9355. However, in February 2010, the Supreme Court ruled that the law was unconstitutional, as the necessary requirements for provincial land area and population were not met. The town reverted to Surigao del Norte.[6] On October 24, 2012, however, the Supreme Court reversed its ruling from the previous year, and upheld the constitutionality of RA 9355 and the creation of Dinagat Islands as a province.[7]


Cagdianao is politically subdivided into 14 barangays.


Population census of Cagdianao
YearPop.±% p.a.
1960 4,342    
1970 4,827+1.06%
1975 5,789+3.71%
1980 8,435+7.82%
1990 11,555+3.20%
1995 11,175−0.62%
2000 12,886+3.10%
2007 14,130+1.28%
2010 15,047+2.31%
2015 16,808+2.13%
Source: Philippine Statistics Authority[3][8][9]


  1. "Municipality". Quezon City, Philippines: Department of the Interior and Local Government. Retrieved 31 May 2013.
  2. "Province: Dinagat Islands". PSGC Interactive. Quezon City, Philippines: Philippine Statistics Authority. Retrieved 12 November 2016.
  3. Census of Population (2015). "Caraga". Total Population by Province, City, Municipality and Barangay. PSA. Retrieved 20 June 2016.
  4. "PSA releases the 2015 Municipal and City Level Poverty Estimates". Quezon City, Philippines. Retrieved 12 October 2019.
  5. Paredes, Francis Tom; Paredes, Sheila (2017). The Monosyllabic root -ao in Mindanao Languages. 8th Annual In-house Review of the Research Office of Agusan del Sur State College of Agriculture and Technology. Agusan del Sur State College of Agriculture and Technology.
  6. Tetch Torres (2010-02-11). "Dinagat Islands province back to being a town". Philippine Daily Inquirer. Archived from the original on 2010-02-12. Retrieved 10 February 2010.
  7. "IRA Shares for LGUs Jump by 37.5% in 2013". Office of the President of the Philippines. January 9, 2013. Archived from the original on September 3, 2014.
  8. Census of Population and Housing (2010). "Caraga". Total Population by Province, City, Municipality and Barangay. NSO. Retrieved 29 June 2016.
  9. Censuses of Population (1903–2007). "Caraga". Table 1. Population Enumerated in Various Censuses by Province/Highly Urbanized City: 1903 to 2007. NSO.
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