Region XI (Davao Region)

PSGC: 110000000
ISO: 11
Regional Centre: Davao City
Congressional Districts: 11
Provinces: 4
Cities: 6
Municipalities: 43
Barangays: 1,162

September 24, 1972: Region XI (Southern Mindanao) created from Davao del Norte, Davao del Sur, Davao Oriental, North Cotabato and South Cotabato with Davao City as the regional centre, by Presidential Decree No. 1 as part of the Integrated Reorganisation Plan.
July 7, 1975: Maguindanao, North Cotabato and Sultan Kudarat removed from Region XI and, Surigao del Sur transferred into Region XI by Presidential Decree No. 742.
October 12, 1990: South Cotabato removed from Region XI by Executive Order No. 429, but not executed.
February 23, 1995: Surigao del Sur removed from Region XI and Sultan Kudarat transferred into Region XI by Republic Act No. 7901.
December 10, 1998: Sultan Kudarat removed from Region XI by Republic Act No. 8744.
September 19, 2001: Sarangani and South Cotabato removed from Region XI and, Region XI renamed Region XI (Davao Region) by Executive Order No. 36.

PSGC: 118200000
ISO: COM
Province Capital: Nabunturan
Area Code: 84
Congressional Districts: 2
Cities: 0
Municipalities: 11
Barangays: 237

March 7, 1998: Compostela Valley created from Davao del Norte by Republic Act No. 8470.

PSGC: 112300000
ISO: DAV
Province Capital: Tagum, City of
Area Code: 84
Congressional Districts: 2
Cities: 3
Municipalities: 8
Barangays: 223

May 8, 1967: Davao del Norte province created from Davao by Republic Act No. 4867.
August 4, 1969: Samal created as a sub-province by Republic Act No. 5999, but never implemented.
June 17, 1972: Davao del Norte renamed Davao by Republic Act No. 6430 but continued to be called Davao del Norte by subsequent statures.
1998: Davao renamed Davao del Norte.

¹ Originally the municipalities of Babak and Samal (which comprised the island of Samal) were intended to constitute the sub-province of Samal with the municipality of Samal as the sub-province capital. The municipality of Kaputian was later created out of the municipality of Samal. All three municipalities were later merged into the Island Garden City of Samal.

PSGC: 112400000
ISO: DAS
Province Capital: Digos, City of
Area Code: 82
Congressional Districts: 5
Cities: 2
Municipalities: 14
Barangays: 519

1860: Davao created as a district.
July 23, 1914: Davao province created from the Department of Mindanao and Sulu.
March 10, 1917: Province established by Act No. 2711.
May 8, 1967: Davao del Sur province created from Davao by Republic Act No. 4867.

PSGC: 112500000
ISO: DAO
Province Capital: Mati, City of
Area Code: 87
Congressional Districts: 2
Cities: 1
Municipalities: 10
Barangays: 183

1848/1849: Nueva Guipuzcoa province created from Caraga.
1860: Became part of the Davao district.
May 8, 1967: Davao Oriental province created from Davao by Republic Act No. 4867.