Anwara upazila and sangu river on the north, Chakaria upazila on the south, Lohagara and Satkania upazilas and wide hilly regions on the east, Kutubdia Channel, Kutubdia upazila and bay of bengal on the west.

Banshkhali thana, now an upazila, was established in 1958. The upazila consists of 15 union parishads, 69 mouzas and 111 villages.

Banshkhali Upazila is located in Chittagong District. Upazilla(s)/Thana(s) in Chittagong are Anwara Upazila, Bandar (Chittagong Port) Thana, Banshkhali Upazila, Boalkhali Upazila, Chandanaish Upazila, Chandgaon Thana, Double Mooring Thana, Fatikchhari Upazila, Hathazari Upazila, Kotwali Thana, Lohagara Upazila, Mirsharai Upazila, Pahartali Thana, Panchlaish Thana, Patiya Upazila, Rangunia Upazila, Raozan Upazila, Sandwip Upazila, Satkania Upazila, Sitakunda Upazila.

Baksi Hamid Mosque and its Arabic stone inscriptions (1558), Nim Kalibari (1710), Sikh Temple (Banigram).