Eastern green mambas are native to more coastal regions of southern Africa and East Africa. Their range extends from Kenya south through Tanzania, Malawi, eastern Zimbabwe, and eastern Zambia. They can also be found in Zanzibar and northern Mozambique. An isolated and genetically distinct population is found in South Africa from the extreme northeastern part of the Eastern Cape along the KwaZulu-Natal coastline and into southern Mozambique. Eastern green mambas inhabit tropical rainforests in coastal lowlands and it is suggested that they can also be found in coastal bush, dune, and montane forests. These snakes are rarely found in open terrain and prefer relatively dense well-shaded vegetation. In addition to wild forest habitats, they are also commonly found in thickets and farm trees (such as citrus, mango, coconut, and cashew). In coastal East Africa, they are known to enter houses and may even shelter in thatched-roof dwellings.