Maguindanao is a province, under the Autonomous Region in Muslim Mindanao (ARMM), situated at the central Mindanao area. Its total land area is 487,160 ha that is bounded by the Lanao del Sur (north), Cotabato (east), Ilana Bay (west) and Sultan Kudarat (south).
The people of Maguindanao sum up a total population of 1,173,933 based on the 2015 Census of Population (PopCen) and a Poverty Incidence rate (per Family) of 54.5 as per the 2012 survey of Philippine Statistics Authority (PSA) thus making it one among the priority provinces of the Special Area for Agricultural Development Program for 2017 under the supervision of the Soccsksargen or Region 12.
It is subdivided into 36 municipalities with 508 barangays. Its capital (executive) is the town of Buluan, whereas its legislative branch still lies on its old capitol in Sultan Kudarat. Maguindanao people dominates in this province although they are mixed with other ethnicities such as the Ilongos, Cebuanos, Chuvacanos, Badjao, Tausugs and Yakan. Hence, their dominant language is Maguindaon followed by the native dialects of the mentioned ethnic groups as well as of Tagalog and English.
Maguindanao also relies mainly on agriculture and fishery with major production of the following crops: coffee, corn, rice, mango, cacao, banana, durian, cotton and rubber.
Sources: https://en.wikipedia.org/wiki/Maguindanao#Geography and http://www.oocities.org/lppsec/pp/maguindanao.htm