The Municipality of Gloria is located 76 kms away from the province's capital of Calapan City. It has a total land area of 28,029 hectares and is composed of 27 barangays. It is bounded on the north by Pinamalayan, on the south by Bansud, on the west by Occidental Mindoro, and on the east by Tablas Strait.

Gloria has twenty-seven (27) barangays:  nine (9) barangays are situated along the national highway; six (6) coastal barangays are located on the eastern side of the municipality while the remaining thirteen (12) interior barangays are on the western side. However, some barangays have combined ecosystems of lowland-coastal or lowland-upland.