Kampong Speu province is located to the west of Phnom Penh. It borders Kampong Chhnang and Pursat to the North, Phnom Penh to the East, Kampot and Takeo to the South and Koh Kong to the West. The area of the province is 7017 square kilometres.
The topography is variable, from a large area of lowland paddy fields in the east to lowland/upland mosaics and upland forested areas in the West. Cambodia’s highest mountain, the Phnom Aural with 1813m altitude is located in the very North of this province. Kampong Speu is classified as a rural province.