To the east, it shares borders with Thap Put and Phanom districts of Surat Thani province.

Moving clockwise, the adjacent districts within Phang Nga province include Kapong, Thai Mueang, and Takua Thung.

Ao Phang Nga National Park encompasses the islands to the south of the district, known for their distinctive landscapes and marine biodiversity.

The district also features a variety of caves situated within its limestone hills, which are notable for their geological formations.

Phang Nga itself is a town (thesaban mueang) and covers tambon Thai Chang.