Ethiopia, Kenya, Malawi, Mozambique, South Africa, Sudan, Tanzania [United Republic of], Zambia, Zimbabwe.
Vagrant to Eritrea.
Ethiopian Highlands, south-eastern Sudan and central Kenya south to eastern and southern Tanzania and Malawi; and central Mozambique to south-eastern Zimbabwe.
 
Population
Estimated population is unknown (2010).
Silvery-cheeked Hornbill (Bycanistes brevis) [XC452453]
by Louis A. Hansen from Vikongwa camp and general area, Ndundulu, Udzungwa Mts, Tanzania (call)
Silvery-cheeked Hornbill (Bycanistes brevis) [XC517352]
by Louis A. Hansen from Suni camp, Chita Forest, southern Udzungwa Scarp, Tanzania (call)
Subspecies
Genus sometimes merged with Ceratogymna. In past, northern populations sometimes separated as subspecies omissus.