Region IV‑B, or MIMAROPA, consists of Occidental Mindoro, Oriental Mindoro, Marinduque, Romblon, and Palawan. This administrative guide covers its provinces, cities, municipalities, geography, economy, and LGU structure.
Region IV‑B – MIMAROPA Administrative Guide
Region IV‑B, officially known as MIMAROPA, is a unique region composed entirely of island provinces. Located in the southwestern portion of Luzon Island Group, MIMAROPA is known for its biodiversity, marine ecosystems, protected areas, and rapidly developing provincial capitals.
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This page serves as the central administrative hub for all LGUs within Region IV‑B.’
- Island Group: Luzon
- Regional Center: Calapan City, Oriental Mindoro
- Provinces: 5
- Cities: 2
- Municipalities: 71
- Barangays: 1,600+
- PSGC Code: 17000000
MIMAROPA is known for its island geography, marine biodiversity, and protected natural areas, including the world‑famous Palawan biosphere reserves.
Provinces of Region IV‑B
Occidental Mindoro
- Capital: Mamburao
- Occidental Mindoro Administrative Page
- Cities & Municipalities of Occidental Mindoro
Oriental Mindoro
- Capital: Calapan City (Regional Center)
- Oriental Mindoro Administrative Page
- Cities & Municipalities of Oriental Mindoro
Marinduque
- Capital: Boac
- Marinduque Administrative Page
- Cities & Municipalities of Marinduque
Romblon
- Capital: Romblon
- Romblon Administrative Page
- Cities & Municipalities of Romblon
Palawan
- Capital: Puerto Princesa City
- Palawan Administrative Page
- Cities & Municipalities of Palawan
Cities of Region IV‑B
Component & Independent Cities
- Calapan City – Oriental Mindoro (Regional Center)
- Puerto Princesa City – Palawan (Highly Urbanized City)
Municipalities of Region IV‑B
Region IV‑B contains 71 municipalities, organized by province. Each province’s LGU index page provides complete listings:
- Occidental Mindoro LGUs
- Oriental Mindoro LGUs
- Marinduque LGUs
- Romblon LGUs
- Palawan LGUs
Geography & Environment
Landscape
MIMAROPA features:
- Mountain ranges (Mindoro’s Halcon Range)
- Marine protected areas
- Coral reefs and atolls
- Island archipelagos (Romblon, Palawan)
- Dense tropical forests
Climate
- Tropical monsoon
- Dry season: November–April
- Wet season: May–October
- Typhoon exposure varies by province
Cultural & Historical Profile
Region IV‑B is home to:
- Mangyan indigenous groups (Mindoro)
- Tagalog
- Visayan (Palawan)
- Romblomanon
- Marinduqueño
Cultural highlights include:
- Moriones Festival (Marinduque)
- Palawan’s indigenous communities
- Mindoro’s traditional weaving
- Romblon marble craftsmanship
Economic Profile
Key Sectors
- Fisheries
- Agriculture
- Tourism
- Mining (select provinces)
- Forestry
- Marine conservation
Major Infrastructure
- Puerto Princesa International Airport
- Calapan Port
- Mindoro’s nautical highway
- Palawan’s tourism corridors
Internal Links
- Luzon Island Group
- Administrative Divisions
- Provinces of the Philippines
- Cities of the Philippines
- Municipalities of the Philippines
Conclusion
Region IV‑B – MIMAROPA is one of the Philippines’ most geographically diverse and environmentally significant regions. This administrative page provides a complete overview of its provinces, cities, municipalities, and LGU structure, forming a key part of your national administrative silo.