Occidental Mindoro covers a total area of 5,865.71 square kilometres (2,264.76 sq mi) occupying the western section of the Mindoro island, and includes outlying islands in the northwest.
Occidental Mindoro has land surface features like mountains, rivers, hills, valleys, wide plains and some small fresh water lakes. The taller mountains can be found in the interior that it shares with Oriental Mindoro. Mountain ranges converge on the two central peaks, Mount Halcon in the north, and Mount Baco in the south. There is also a mountain known as bundok ng susong dalaga, the "Maiden's breast mountain", that looks like a reclined woman.
Economic Activities in Occidental Mindoro is a agricultural area like rice, corn, onions, garlic, salt, fishes (both wild and cultured) are some of the relatively significant surpluses produced in the province in exportable quantities. Mangoes, cashew nuts, cooking bananas (saba) and some other fruits grown in upland orchards are among the other exports of Occidental Mindoro that have traditionally contributed to its income. Peanuts are also grown in some parts of the province, as well as cassava, sweet potatoes, ginger and other minor cultivars.