Occidental Mindoro (), officially the Province of Occidental Mindoro ( or ''Lalawigan ng Occidental Mindoro''), is a
province
A province is an administrative division within a country or sovereign state, state. The term derives from the ancient Roman , which was the major territorial and administrative unit of the Roman Empire, Roman Empire's territorial possessions ou ...
in the
Philippines
The Philippines, officially the Republic of the Philippines, is an Archipelagic state, archipelagic country in Southeast Asia. Located in the western Pacific Ocean, it consists of List of islands of the Philippines, 7,641 islands, with a tot ...
located in the
Mimaropa region
In geography, regions, otherwise referred to as areas, zones, lands or territories, are portions of the Earth's surface that are broadly divided by physical characteristics (physical geography), human impact characteristics (human geography), and ...
. The province occupies the western half of the island of
Mindoro. Its capital is
Mamburao, but the most populous municipality is
San Jose.
Sablayan is its largest municipality in terms of area, occupying almost half of the entire province. As of 2020, Occidental Mindoro has 525,354 inhabitants.
The province is bordered on the east by the province of
Oriental Mindoro, and on the south by the
Mindoro Strait. The
South China Sea
The South China Sea is a marginal sea of the Western Pacific Ocean. It is bounded in the north by South China, in the west by the Indochinese Peninsula, in the east by the islands of Taiwan island, Taiwan and northwestern Philippines (mainly Luz ...
is to the west of the province and
Palawan
Palawan (, ), officially the Province of Palawan (; ), is an archipelagic province of the Philippines that is located in the region of Mimaropa. It is the largest province in the country in terms of total area of . The capital and largest c ...
is located to the southwest, across the Mindoro Strait.
Batangas
Batangas, officially the Province of Batangas ( ), is a first class province of the Philippines located in the southwestern part of Luzon in the Calabarzon region. According to the 2020 census, it has a population of 2,908,494 people, making ...
is to the north, separated by the
Verde Island Passage, a protected marine area and the center of the world's marine biodiversity.
History
Early history
Mindoro Island
Mindoro is the seventh largest and eighth-most populous List of islands of the Philippines, island in the Philippines. With a total land area of 10,571 km2 ( 4,082 sq.mi ), it has a population of 1,408,454, as of the 2020 census. It is lo ...
was originally known to the ancients as ''Ma-i''. It was formally called ''Mait'', and known to the Chinese traders before the coming of the Spanish. Its existence was mentioned in the old Chinese chronicles in 775 A.D. and more elaborately in 1225.
The natives of Mindoro were called ''Manguianes'' by the Spaniards. But the natives refer to themselves by their ethnic or clan identification. There were seven such ethnic or clan distinctions, which are differentiated by language and areas where each can be found. There are no authentic documents in existence explaining the origins of the Mangyan, but later theoreticians postulate that they migrated from Indonesia before 775 A.D. They hopped from island to island, until finally settling down permanently in Mindoro. It appeared that clan settlements existed in the North as well as in the southern ends of the island. By 779, the southwest coast of the island was already a known trading center, and its fine natural harbor frequented by Arab, Indian and Chinese maritime traders who plied the route.
The first semblance of a political system in Mindoro's experience was provided by China in the 13th century. Chinese imperial forces under Admiral
Cheng Ho with a powerful armada of 60 war junks visited Mindoro and other parts of the archipelago in the 13th century, with the purpose of gaining more trading favors for Chinese merchants. Cheng Ho tried to exert some effort of rule as a prelude to annexation. Internal trouble in the China, however, recalled the armada, and the attempts to annex the archipelago did not materialize.
Some time afterwards, Islamic influence reached the island, probably, through Suluanons who traded with the natives. Moslem peoples, possibly - Orang Dampuans (economic refugees from
Sulu
Sulu (), officially the Province of Sulu (Tausug language, Tausūg: ''Wilaya' sin Lupa' Sūg''; ), is a Provinces of the Philippines, province of the Philippines in the Sulu Archipelago.
It was part of the Bangsamoro, Bangsamoro Autonomous R ...
) crossed
Mindoro Strait from Paragua (now
Palawan
Palawan (, ), officially the Province of Palawan (; ), is an archipelagic province of the Philippines that is located in the region of Mimaropa. It is the largest province in the country in terms of total area of . The capital and largest c ...
) and settled along the coastal areas, developing progressive maritime communities.
Spanish colonial era
In 1570, the Spanish began to explore the island and named it ''Mina de Oro'' ("mine of gold") after finding some of the precious metal, though no major gold discoveries were made. In 1572, Captain
Juan de Salcedo of the Spanish expeditionary army set sail from
Cebu
Cebu ( ; ), officially the Province of Cebu (; ), is a province of the Philippines located in the Central Visayas region, and consists of a main island and 167 surrounding islands and islets. The coastal zone of Cebu is identified as a ...
and explored the west coast of the island, encountering the Mangyans, who appeared used to seeing foreigners and were unsurprised at their arrival. Instead, Salcedo and
Martin de Goiti Martin may refer to:
Places Antarctica
* Martin Peninsula, Marie Byrd Land
* Port Martin, Adelie Land
* Point Martin, South Orkney Islands
Europe
* Martin, Croatia, a village
* Martin, Slovakia, a city
* Martín del Río, Aragón, Spain
* M ...
were surprised to see cross designs on the clothing and basketwork of the natives, and thought some early Christian missionary had been there before them. But later scholars believed the design was Indic in origin and had no religious meaning.
The Spaniards also encountered
Moro settlers in
Lubang Island that were
vassal
A vassal or liege subject is a person regarded as having a mutual obligation to a lord or monarch, in the context of the feudal system in medieval Europe. While the subordinate party is called a vassal, the dominant party is called a suzerain ...
s of and paid tribute to the
kingdom of Maynila in the North, under
Rajah Sulayman. This was the first real political system in the island. The Moros, who apparently had heard of the invaders from their kinsmen in the south, engaged the small Spanish force who landed on their shore, but the Spaniards' arquebuses and cannon fire from the ships hoved-to broadside to the island took the field. The Moros fled to the hills, and Salcedo burned their village. After the defeat of Sulaiman in the same year, Mindoro and other vassal states of Maynila became subject of Spanish rule. The island was officially referred to from then on as ''Mina de Oro'', compressed later on into Mindoro. The ancient name, Ma-i, fell into disuse.
The
Spanish-Moro war continued in Mindoro until the end of the Spanish regime in the 19th century. In 1602, Moro forces plundered the most important Spanish towns along the coasts of Mindoro and Southern Luzon, and subsequently reestablished their hold in Mindoro by constructing a fort at
Mamburao. From 1720 onwards, Moro raids became devastating not only to the island's Hispanized communities but to other parts of the archipelago as well. In 1757, the Moros, more particularly, the
Iranuns organized a war fleet of 74 fast native ships called ''prahus''. They destroyed several settlements in the island, carrying off their inhabitants to be sold as slaves in
Jolo. The fact that a Moro fort at Mamburao threatened
Manila
Manila, officially the City of Manila, is the Capital of the Philippines, capital and second-most populous city of the Philippines after Quezon City, with a population of 1,846,513 people in 2020. Located on the eastern shore of Manila Bay on ...
, the capital of the colonial government, embarrassed the conquerors in the eyes of their native subjects, which was politically intolerable to the Spanish administrators. So in 1766, the Spaniards gathered a large force of 1,200 marines, augmented by a large army of native mercenaries, and burned the Iranun fort. But the Moros simply fled into the hills to escape, and came back when the counter-raid was over and the raiders returned to Manila.
The Moros not only plundered goods, but also took prisoners of war which they sold as slaves. Many Islamic leaders in Mindanao supported piratical raids with arms, ammunition and food, not only because it was a patriotic act, but also because it was profitable. They received part of the "prisoners of war" when a successful raider returned, which earned them huge amounts. Most of the raids were successful because of the fast watercraft in the employ of the raiders. It was not until the commission of the ''vapor,'' fast steamships, in the mid-18th century that the Spanish navy successfully patrolled the archipelagic waters, and fared well against the wind-powered native seacraft of the pirates. Many pirate fleets were sunk at sea, or confined to their hiding places. The invention of machines during the Industrial Revolution, which gradually replaced manual labor, and the consecutive abolitions of slave ownership in many liberalized countries, caused a great decline in the demand for slave labor. Many of the pirate markets closed, and prices fell severely for captives. With losses to the Spanish navy increasing, and the eventual fall in profits from slave selling, raiding became less appealing to the Iranuns and their supporters. The pirate fort in Mamburao was abandoned, and the Moros retreated to Mindanao to consolidate their forces and continue the resistance in Mindanao. The Spanish presence in Mindoro was strentgthened.
In 1896, the
Philippine Revolution
The Philippine Revolution ( or ; or ) was a war of independence waged by the revolutionary organization Katipunan against the Spanish Empire from 1896 to 1898. It was the culmination of the 333-year History of the Philippines (1565–1898), ...
broke out. In 1897, the Spaniards posted a rifle company of 140 troops and 51 marines to
Calapan to secure the island from the forces of General
Emilio Aguinaldo
Emilio Aguinaldo y Famy (: March 22, 1869February 6, 1964) was a Filipino revolutionary, statesman, and military leader who became the first List of presidents of the Philippines, president of the Philippines (1899–1901), and the first pre ...
and his revolutionary army, then beginning to overrun Spanish positions in the archipelago. In 1898, the revolutionaries attacked and overwhelmed the settlement of
Bongabong and western Mindoro. Finally, they marched against the capital of Calapan with some 1,000 ill-armed foot soldiers, However, the Spanish defenses held. It was only the arrival of 1,000 regular army troops with artillery, all under the command of
Miguel Malvar
Miguel Malvar y Carpio (September 27, 1865 – October 13, 1911) was a Filipino general who served during the Philippine Revolution and, subsequently, during the Philippine–American War. He assumed command of the Philippine revolutionary forc ...
in
Batangas
Batangas, officially the Province of Batangas ( ), is a first class province of the Philippines located in the southwestern part of Luzon in the Calabarzon region. According to the 2020 census, it has a population of 2,908,494 people, making ...
, that compelled the surrender of the Spaniards under Governor Morales. On July 1, 1898, Spanish rule in Mindoro Island, lasting for 328 years, ended.
American occupation
A new battalion "Mindoro", with two rifle companies, was formed under the command of Captain Ruperto Hernandez and Estanislao Cayton, both from Batangas. The revolutionary political reins were held by the elite, who also held the same reins under the Spaniards (and later under the Americans).
In 1910, the successor United States politico-military administration granted over of land to the
Welch and Fargo Sugar Company in what is now
San Jose, which built the first modern and biggest sugar mill in the Far East at Siete Central (now barangay Central). In the same year, the boldly developing community of sugar cane planters, mill workers, company professionals and businessmen enabled the creation of San Jose as an official town.
Philippine independence
In 1950, the province of Mindoro was divided into Oriental Mindoro and Occidental Mindoro by virtue of Republic Act No. 505.
Contemporary history
In April 2023, the provincial government placed the entire province under
a state of calamity due to recurring 20-hour daily
power outage
A power outage, also called a blackout, a power failure, a power blackout, a power loss, a power cut, or a power out is the complete loss of the electrical power network supply to an end user.
There are many causes of power failures in an el ...
s.
Geography

Occidental Mindoro covers a total area of occupying the western section of the
Mindoro island, and includes outlying islands in the northwest.
General land surface features that characterize Occidental Mindoro are mountains, rivers, hills, valleys, wide plains and some small fresh water lakes. The taller mountains can be found in the interior that it shares with Oriental Mindoro.
Mountain ranges converge on the two central peaks,
Mount Halcon in the north, and
Mount Baco in the south. There is also a mountain known as ''bundok ng susong dalaga'', the "Maiden's breast mountain", that looks like a reclined woman.
Maiden's breast mountain, Occ. Mindoro
/ref>
The northern part of the province has relatively fewer plains, while the southern parts have wider flatlands. Most of the plains are cultivated fields, with few remaining untouched forests. Significant hilly areas can be found rolling off in Santa Cruz in the north, and in San Jose and Magsaysay in the south. These are grassed-over rather than forested.
There are several major drainage or river systems flowing on a generally westerly course: , Pagbahan, Mompong, Biga, Lumintao, Busuanga and Caguray. Swamp areas are restricted to the south, specially, along the river mouth
A river mouth is where a river flows into a larger body of water, such as another river, a lake/reservoir, a bay/gulf, a sea, or an ocean. At the river mouth, sediments are often deposited due to the slowing of the current, reducing the carryin ...
s.
The province is also home to one of the most popular coral reef
A coral reef is an underwater ecosystem characterized by reef-building corals. Reefs are formed of colonies of coral polyps held together by calcium carbonate. Most coral reefs are built from stony corals, whose polyps cluster in group ...
s in the Philippines, Apo Reef.
Climate
Occidental Mindoro has two distinct weather types: rainy season and dry season. Rains begin to fall in the province in late May, intensifying through June, July, August, September and October, then gradually subsides in November. The months of August and September are the wettest period, with storms directly passing through the area.
On the other hand, dry season starts in November, with rainfall subsiding in intensity, and altogether ceasing in January, February, March and April. March and April are the driest period, with cloudless skies and parched earth characterizing the general area.
Temperature range is from in the windy uplands to in the lowlands.
Administrative divisions
Occidental Mindoro comprises 11 municipalities
A municipality is usually a single administrative division having municipal corporation, corporate status and powers of self-government or jurisdiction as granted by national and regional laws to which it is subordinate.
The term ''municipality' ...
and 2 legislative districts.
Demographics
The population of Occidental Mindoro in the 2020 census was 525,354 people, with a density of .
The indigenous people in the province are the Mangyans (''Manguianes'' in Spanish, ''Mañguianes'' in Old Tagalog
Old Tagalog (; Baybayin: pre-virama: , post-virama rus kudlit ; post-virama amudpod ᜎᜓᜋᜅ᜕ ᜆᜄᜎᜓᜄ᜕), also known as Old Filipino, is the earliest form of the Tagalog language during the Classical period. It is the primary l ...
), consisting of 7 distinct tribes. They occupy the foothills and interior. The Mangyan have inhabited the island since pre-history. They are believed to have originally traveled from Indonesia and settled down for good in the island.
There is much evidence, historical and geophysical, that the Mangyan tribes formerly lived near the coastlines. They were compelled, however, to move into the interior jungles of the island when the inter-island immigrants came, in order to avoid confrontations, which the peace-loving tribes wished to avoid at all costs. They also wished to avoid cultural changes and to preserve their way of life.
Today, the Mangyan number to only around 80,000 (freely moving in and out in both provinces of Oriental and Occidental Mindoro). But there is no accurate accounting of them since many still live elusively in the upper regions of the island, avoiding contact with lowlanders.
Languages
Major languages spoken are Tagalog and the Mangyan
Mangyan is the generic name for the eight indigenous groups found in Mindoro each with its own tribal name, language, and customs. The total population may be around 280,001, but official statistics are difficult to determine under the condi ...
languages. Tagalog is usually spoken with Batangas dialect both due to its geographical contact with Batangas
Batangas, officially the Province of Batangas ( ), is a first class province of the Philippines located in the southwestern part of Luzon in the Calabarzon region. According to the 2020 census, it has a population of 2,908,494 people, making ...
and Batangueño residents in the province, with great influences from native Mangyan and Visayan languages. Ilocano, Visayan, and Bicolano, are varyingly spoken by people who migrated from the provinces where they are spoken. Occidental Mindoro is a cultural melting pot, populated mostly by recent immigrants.
Religion
Like the Eastern half of the island, most of the population of Occidental Mindoro are of Roman Catholic
The Catholic Church (), also known as the Roman Catholic Church, is the largest Christian church, with 1.27 to 1.41 billion baptized Catholics worldwide as of 2025. It is among the world's oldest and largest international institut ...
conviction (82%) while minor religions are usually represented by various Christian denominations
A Christian () is a person who follows or adheres to Christianity, a monotheistic Abrahamic religion based on the life and teachings of Jesus Christ. Christians form the largest religious community in the world. The words '' Christ'' and ''C ...
, Islam
Islam is an Abrahamic religions, Abrahamic monotheistic religion based on the Quran, and the teachings of Muhammad. Adherents of Islam are called Muslims, who are estimated to number Islam by country, 2 billion worldwide and are the world ...
, indigenous Philippine folk religions, animism
Animism (from meaning 'breath, spirit, life') is the belief that objects, places, and creatures all possess a distinct spiritual essence. Animism perceives all things—animals, plants, rocks, rivers, weather systems, human handiwork, and in ...
, and atheism
Atheism, in the broadest sense, is an absence of belief in the Existence of God, existence of Deity, deities. Less broadly, atheism is a rejection of the belief that any deities exist. In an even narrower sense, atheism is specifically the ...
.
Economy
Occidental Mindoro is an agricultural area devoted to the production of food. Its economic base is rice production (''Oryza sativa
''Oryza sativa'', having the common name Asian cultivated rice, is the much more common of the two rice species cultivated as a cereal, the other species being ''Oryza glaberrima, O. glaberrima'', African rice. It was History of rice cultivation ...
'' culture), a Philippine staple crop. It is the leading activity and source of seasonal employment in the province, participated in by almost 80 per cent of the population, including children.
Wetland or lowland rice is a rainy season crop, heavily dependent on water and therefore produced from July (planting season) to October (harvest season). Tobacco, onions, garlic and vegetables are grown during the dry season (November to May) since they are not water-intensive crops, and require longer photoperiodicity.
Rice, corn, onions, garlic, salt, fishes (both wild and cultured) are some of the relatively significant surpluses produced in the province in exportable quantities. Mangoes, cashew nuts, cooking bananas (''saba'') and some other fruits grown in upland orchards are among the other exports of Occidental Mindoro that have traditionally contributed to its income. Peanuts are also grown in some parts of the province, as well as cassava, sweet potatoes, ginger and other minor cultivars.
Forest resources include timber and minerals, among them gold, copper, silver, chrome, and non-metallic minerals such as lime for making cement, and greenstones for ornaments. Timber groups include many species of hardwoods, such as mahogany, and other types of trees in high demand for durability.
There is no large industry in the province. The government is the biggest employer, absorbing most of the off-farm labor force. The local electric cooperative, Occidental Mindoro Electric Cooperative (OMECO), is the biggest employer in the private sector, with nearly 150 regular employees. The rest of the population is engaged in private trades.
Problems
There are many multi-faceted problems in Occidental Mindoro's economy. In rice farming, the biggest issue confronting the producers is the high cost of production. This is attributed mainly to the spiraling prices of farm inputs. A study concluded that from 1997 to 2003, the cost of production rose by 47 per cent, while the income derived from marketing rice maintained 1997 levels. There are also confused reports that the average production rate has declined due to the reduced application of necessary farm chemicals. In street language, this means that the farmers simply cut the amount of inputs because they cannot afford the high capital requirements of following all the recommended inputs in the farming calendar.
Another structural problem is the inadequacy of irrigation. Most of the river systems in the province no longer have the demanded volume of water to make irrigation feasible. This is attributed to the greatly deforested watersheds.
Flora and fauna
File:Choriaster granulatus 03.jpg, A robust red sea star ('' Choriaster granulatus'') in Pandan Islands
File:Pycnoclavella diminuta 01.jpg, A colony of orange tunicates ('' Clavelina dimunata'') in Pandan Islands
File:Reef4358 - Flickr - NOAA Photo Library.jpg, A Bright Red Shrimp in Pandan Islands.
File:Reef4292 - Flickr - NOAA Photo Library.jpg, A cushion star in Apo Reef
File:Reef4313 - Flickr - NOAA Photo Library.jpg, Yellowish white soft coral in Apo Reef
File:Reef4318 - Flickr - NOAA Photo Library.jpg, A yellow crinoid in Apo Reef
References
External links
*
*
Local Governance Performance Management System
{{Authority control
Provinces of the Philippines
Mindoro
Provinces of Mimaropa
States and territories established in 1950
1950 establishments in the Philippines