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2000 census—707,668 (33rd largest).
Masbate is subdivided into 20 municipalities and 1 city.
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|- |style="padding:0px 5px" align="right"|Ilocos Region: |style="padding:0px 5px" | Ilocos Norte | Ilocos Sur | La Union | Pangasinan |- |style="padding:0px 5px" align="right"|Cagayan Valley: |style="padding:0px 5px" | Batanes | Cagayan | Isabela | Nueva Vizcaya | Quirino |- |style="padding:0px 5px" align="right"|Central Luzon: |style="padding:0px 5px" | Aurora | Bataan | Bulacan | Nueva Ecija | Pampanga | Tarlac | Zambales |- |style="padding:0px 5px" align="right"|CALABARZON: |style="padding:0px 5px" | Batangas | Cavite | Laguna | Quezon | Rizal |- |style="padding:0px 5px" align="right"|MIMAROPA: |style="padding:0px 5px" | Marinduque | Occidental Mindoro | Oriental Mindoro | Palawan | Romblon |- |style="padding:0px 5px" align="right"|Bicol Region: |style="padding:0px 5px" | Albay | Camarines Norte | Camarines Sur | Catanduanes | Masbate | Sorsogon |- |style="padding:0px 5px" align="right"|Cordillera Adm. Region: |style="padding:0px 5px" | Abra | Apayao | Benguet | Ifugao | Kalinga | Mountain Province |- |style="padding:0px 5px" align="right"|Metro Manila: |style="padding:0px 5px" | No provinces |}
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