Burundi, Congo [The Democratic Republic of the], Kenya, Rwanda, Sudan, Tanzania [United Republic of], Uganda.
Vagrant to Ethiopia.
Southern Sudan, eastern DRCongo, Rwanda, Burundi, Uganda, western Kenya and north-western and extreme western Tanzania, with isolated records in central and eastern Tanzania.
 
Population
Estimated population is unknown (2010).
Red-chested Sunbird (Cinnyris erythrocercus) [XC253030]
by Martin St-Michel from Queen Elizabeth National Park, Bushenyi, Western Region, Uganda (song)
(Cinnyris erythrocercus) [XC823330]
by Peter Boesman from Kisumu Lake Victoria, Kenya (song)