San Andres in the province of Quezon is a fourth class municipality situated 128 kilometers east-southeast of the provincial capitol of Lucena City. Administratively, the town of San Andres is subdivided into seven barangays. Barangay Tala, Barangay Camflora, Barangay Pansoy, Baragay Mangero, Barangay Talisay. Poblacion forms the center, whereas the other six are in the outlying areas which are several kilometres away from the center of the municipality. The municipality also includes the island barangay of Alibijaban in Ragay Gulf.

Alibijaban Island is a virgin paradise is a small island located off the southeastern coast of Bondoc Peninsula in the Philippines.It belongs administratively to the municipality of San Andres, Quezon province, and is coterminous with the barangay of the same name. With a population of 1,643 inhabitants in 2015, it is the smallest of seven barangays in San Andres. The island is known for its pristine mangrove forest and coral reefs. It is also visited for its white sandy beaches and rich bird life, including the Tabon scrubfowl, white-collared kingfisher, jungle crow, black-naped oriole, island collared dove, Asian glossy starling, chestnut munia, Philippine pied fantail, common emerald dove, black-crowned night heron, common snipe. It also supports a number of fruit bats and monitor lizards. Its mangrove forest which covers approximately 140 hectares (350 acres) of the island’s central and northern portions is protected under the National Integrated Protected Areas System as a wilderness area called the Alibijaban Island Wilderness Area. 225 hectares (560 acres) of waters surrounding it have also been declared a marine protected area known as the Alibijaban Fish Sanctuary. the reasons why backpackers visit the island.

The island also has the most diverse marine habitat in the region of Ragay Gulf. It is home to at least 30 genera of hard coral dominated by Porites, Montipora and Acropora. Its adjacent waters are visited by whale sharks, manta rays, and pawikans (marine turtles). The passage of a municipal ordinance in 2006 prohibited all kinds of fishing in the area.

On 18 June 1961, during the late years of President Carlos P. Garcia’s administration, the fourth change of name for the town came through the enactment of Republic Act No. 3358. The town was renamed San Andres in honor of the town’s patron, Saint Andrew, patron of fishermen, since most of the people of San Andres are fisherfolk.