Ngong is a town near the Ngong Hills along the Great Rift Valley, located in the southwest of Nairobi, in southern Kenya. The word "Ngong" is a Maasai word meaning "knuckles" due to the 4 hill peaks of the ridge, which stands alone rising from the plain around Nairobi. The Ngong Hills, from the eastside slopes, overlook the Nairobi National Park game reserve and, off to the north, the city of Nairobi. The Ngong Hills, from the westside slopes, overlook the Great Rift Valley dropping over 4,000 feet below, where nomadic Maasai villages have been developed.
The general population of Ngong, Kenya is 57,483 people, and the elevation of Ngong town is 1,961 meters in altitude, but the altitude of the hills is about 2,460 meters above sea level. Ngong is the central town of Ngong division of the Kajiado District.
During the years of British colonial rule, the area around the Ngong Hills was a major settler farming region, and many traditional colonial houses are still seen in the area. Today Ngong and its environs is a well-developed outskirt providing a good residing place for many of Nairobi's workers.
Ngong division consists of the Nairobi suburbs of Ongata Rongai, Kiserian,[Matasia] (Oloolua Area) and Kitengela where the residents are primarily Nairobians who build houses in the more quiet regions of the city.