|Former region of the Philippines|
|Capital||Quezon Province (regional center)|
|•||Established||January 1, 1965|
|•||Disestablished||May 17, 2002|
|Today part of|
Southern Tagalog (Tagalog: Timog Katagalugan), designated as Region IV, was an administrative region in the Philippines that comprised the current regions of Calabarzon and Mimaropa, plus Aurora of Central Luzon.
Southern Tagalog was the largest region in the Philippines in terms of both land area and population. The 2000 Census of Population and Housing showed the region having a total of 11,793,655 people, which comprised 15.42 percent of the 76.5 million population of the country at that time.
Region IV was divided into Calabarzon and Mimaropa, upon the issuance of Executive Order No. 103, dated May 17, 2002, by then-President Gloria Macapagal-Arroyo. Additionally, the province of Aurora was moved to Region III (Central Luzon).
Transfer of Palawan
Palawan was transferred to Region VI (Western Visayas) on May 23, 2005 by virtue of Executive Order 429. However, Palawan residents criticized the move citing a lack of public consultation. Most residents of Puerto Princesa and all but one of the province's municipalities preferred to stay in Mimaropa.
Consequently, Administrative Order No. 129 was issued on August 19, 2005 to address this backlash directing the abeyance of Executive Order 429, pending the approval of an implementation plan for the orderly transfer of Palawan from Mimaropa to Region VI. Presently, Palawan is still considered part of Mimaropa.
- "Southern Tagalog: Biggest Region in the Philippines". Philippine Statistics Authority - Philippine Statistics Authority. Philippine Statistics Authority. 2 January 2003. Retrieved 1 November 2014.
- "Executive Order No. 103: Dividing Region IV into Region IV-A and Region IV-B, Transferring the Province of Aurora to Region III and for Other Purposes". Philippine Statistics Authority - National Statistical Coordination Board. Archived from the original on May 29, 2009. Retrieved November 1, 2014.
- World Geography Affected by World Upheavals. Goodwill Trading Co., Inc. p. 95. ISBN 9715740413.
- "Map of the Philippines". Philippine Country Guide. Retrieved 1 November 2014.
- "Executive Order No. 429: Providing for the Reorganization of Administrative Region VI to Include the Province of Palawan and Puerto Princesa City". Philippine Statistics Authority - National Statistical Coordination Board. Archived from the original on 14 November 2012. Retrieved 1 November 2014.
- "Administrative Order no. 129" Archived 2006-02-19 at the Wayback Machine. National Statistical Coordination Board. Retrieved on 2011-03-22.
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