Batangas province has a total land area of 316,581 hectares or 3,165.81 square kilometres. It covers about 20% of the total land area of the CALABARZON and is considered the second largest province in the region. It has a unique cove-like shape coastal areas lying at the south-eastern portion of the province. It consists mostly of moderately sloping to rolling and very steep hills with scattered mountainous areas.
Cavite province has a total land area of 128,755 hectares or 1,287.55 square kilometres, situated at the southern end of the province of Rizal. It covers about 8% of the total land area of the CALABARZON. It is characterized by rolling hinterlands punctuated by hills, with shoreland fronting Manila Bay at sea level, and the rugged portion at the boundary of Batangas where Dos Picos mountains are located.
Laguna province has a total land area of 175,973 hectares or 1,759.73 square kilometres. It is the third-largest province in the region which covers about 11% of the total land area of the CALABARZON. It is considered as an inland province that comprises the largest portion of the Laguna de Bay Region where the Laguna Lake lies, the country's largest inland water and the second-largest freshwater in Southeast Asia. It is characterized by flat and rugged terrain and its slope ranges from level to steep slope.
Quezon province has a total land area of 870,660 hectares or 8,706.60 square kilometres. It is the largest province in CALABARZON having 54% of the total land area of the region. On the other hand, it has a rugged terrain with few plains, valleys and swamps. The undulating lowlands along the coast are well-drained. The province is very narrow, with an average width of about 30 kilometers.
Rizal province has a total land of 130,892 hectares or 3,308.92 square kilometres and about 8% of the total land area of CALABARZON. Its topography is a combination of valleys and mountains, with flat low-lying areas on the western portion, rugged ridges and rolling hills that form part of the Sierra Madre ranges in the eastern portion.
