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Maguindanao del Sur, officially theProvince of Maguindanao del Sur (Maguindanaon:Dairat nu Salatan Magindanaw,Jawi: دايرت نو سلاتان مڬیندانو,Filipino:Timog Maguindanao), is alandlockedprovince in thePhilippines located in theBangsamoro region inMindanao. Its capital is the municipality ofBuluan near the city ofTacurong in the neighboring province ofSultan Kudarat. It bordersCotabato province to the east,Maguindanao del Norte to the west, andSultan Kudarat to the south.
Spain 1521–1898
United States of America 1898–1942
Japan 1942–1945
United States of America 1945–1946
Philippines 1946–present
Maguindanao del Sur was formed whenMaguindanao province was split into two provinces; the other province beingMaguindanao del Norte. The division occurred followinga plebiscite on September 17, 2022 which ratified Republic Act 11550 which proposed the partitioning of the province. As per law former Maguindanao GovernorMariam Mangudadatu was expected to become the governor of the newly formed Maguindanao del Sur province.[1][2] However an issue arose since the determination of the first set of officials of the province presumes that the plebiscite was held prior to the2022 national and local elections. However the plebiscite was postponed to a date after the elections.[3] This led to theCommission on Elections to come up with a legal opinion.[4][5] The position was issued on September 28, 2022, where the election body conclude that only theDepartment of the Interior and Local Government could appoint the first officials of the province.[3]
Mangudadatu would assume the position and take oath as governor of the new province in October 13, 2022. Nathaniel Midtimbang, a member of theMaguindanao Provincial Board, became her vice governor.[6] A transition period would take place until January 9, 2023.[7]

Maguindanao del Sur is composed of 24 municipalities and 2 legislative districts. It has a total area of 4,973.48 square meters (53,534.1 sq ft). Being landlocked, it is bounded byMaguindanao del Norte to the west,Cotabato to the north and east, andSultan Kudarat to the south
| Year | Pop. | ±% p.a. |
|---|---|---|
| 1903 | 87 | — |
| 1918 | 49,868 | +52.72% |
| 1939 | 83,968 | +2.51% |
| 1948 | 139,403 | +5.79% |
| 1960 | 214,514 | +3.66% |
| 1970 | 190,151 | −1.20% |
| 1975 | 162,626 | −3.09% |
| 1980 | 198,079 | +4.02% |
| 1990 | 280,161 | +3.53% |
| 1995 | 337,730 | +3.56% |
| 2000 | 365,081 | +1.68% |
| 2010 | 520,882 | +3.62% |
| 2015 | 651,896 | +4.37% |
| 2020 | 741,221 | +2.74% |
| 2024 | 832,993 | +2.84% |
| aNo census was held in 1985 due to a political and economic crisis bCensus was delayed from the original 2005 due to the reenacted budget that lasted until 2006 Source:National Census and Statistics Office (1975,[10] 1980,[11] and 1990[12] census),National Statistics Office (1995,[13] 2000,[14] 2007,[15] and 2010[16]: 49 census) andPhilippine Statistics Authority (2015 and 2020 census)[17] | ||
According to the 2020 census conducted before the province's creation, Maguindanao del Sur has a population of 741,221 people, with a population density of 160 inhabitants per square kilometer or 410 inhabitants per square mile.[18] The predominant ethnic group is theMaguindanaon.
| Population percentage (2020 Census)[19] |
|---|
|
| Total population: 741,221 |
According to thePhilippine Statistics Authority, registered economic growth of the province had decelerated from 10.2 percent (before its establishment) to 6.7 percent in 2022.[20]
Agricultural growth from forestry and fishery had a growth declined to 5.2 percent. However, economic growth from services grew by 8.9 percent. Among services, accommodation and food services accounted for 31.7 percent.[20]
2010Census was invoked but never defined (see thehelp page).