The island of Masbate lies just west of the province of Sorsogon in the Bicol Peninsula. The population centers are in the municipalities of Masbate (55,996), Aroroy (45,306), San Jacinto (34,185, NSO 1980), and Uson (24,817), with the national population placed at 602,257 (NSO 1990). The island is marked by relatively low-lying and discontinuous highland ranges with narrow strips of coastal lowlands. This has led to the dispersal of populations all over the country especially in Palawan. The subsistence is based on agriculture and fishing with mining in the south of Aroroy in the Conical Peak area.

Distribution of Ethnic Groups by Provinces
(Arrangement: Population count)
Total National Population

Total
Grand Total

19,959
(NSO 1980: 274,355)
327,902
602,257

Abra 1
Agusan del N. 1,100
Agusan del S. 10
Aklan 277
Albay 116
Antique 71
Aurora 39
Bataan 323
Batangas 71
Benguet 30
Bohol 40
Bukidnon 125
Bulacan 509
Camarines S. 100
Capiz 87
Cavite 711
Cebu 411
Davao del S. 41
Davao Or. 174
Iloilo 39
Isabela 91
La Union 10
Maguindanao 10
Negros Occ. 193
Negros Or. 8
N. Cotabato 10
N. Samar 114
Nueva Ecija 10
Occ. Mindoro 753
Or. Mindoro 132
Palawan 2,602
Pampanga 62
Pangasinan 61
Quezon 722
Rizal 1,831
Romblon 567
W. Samar 243
S. Cotabato 178
S. Leyte 19
Surigao del N. 80
Surigao del S. 39
Tarlac 21
Tawi-Tawi 9
Zambales 31
Kalookan 1,012
Las Pinas 142
Mandaluyong 80
Manila 1,368
Marikina 729
Malabon 504
Makati 291
Muntinlupa 208
Navotas 182
Paranaque 389
Pasay 338
Pateros 10
Quezon City 1,762
San Juan 11
Taguig 440
Valenzuela 422