Angola, Cameroon, Central African Republic, Congo [The Democratic Republic of the], Congo [The Democratic Republic of the], Côte dIvoire, Equatorial Guinea, Gabon, Ghana, Guinea, Liberia, Nigeria, Sierra Leone, Tanzania [United Republic of], Uganda.
Western Sierra Leone and south-eastern Guinea east to Ghana (one record Togo), and from south-western Nigeria and Bioko east to south-western Central African Republic and south to Gabon, western PRCongo, northern Angola (Cabinda) and extreme western DRCongo (Mayombe); also across most of central DRCongo (south to south to Kasai and Kivu) and east to parts of western and southern Uganda and extreme north-western Tanzania.
 
Population
Estimated population is unknown (2010).
Icterine Greenbul (Phyllastrephus icterinus) [XC599275]
by Peter Boesman from Bomassa research camp. WCS headquarters for Nouabal\u00e9-Ndoki National Park, Congo (Brazzaville) (call)
Icterine Greenbul (Phyllastrephus icterinus) [XC114913]
by \u00c9tienne Leroy from For\u00eat d'Ebogo, Nyong-et-So, Cameroon (alarm call)
Subspecies
No subspecies.
Sibling species of Xavier's Greenbul (Phyllastrephus xavieri), widely sympatric and very similar in appearance; difficulties in distinguishing the two have in the past led to some taxonomic confusion, and continue to hinder understanding of their respective distributions and ecologies. Relationship with Sassi's Olive Greenbul (Phyllastrephus lorenzi) requires analysis as the two are almost entirely sympatric, closely similar in structure, overlap in dimensions, and appear also to intergrade in crown colour. Sassi's Olive Greenbul (Phyllastrephus lorenzi) is possibly a melanistic form of this species. Birds in east of range (Cameroon east to Uganda) described as subspecies tricolor, on average somewhat greener above and duller yellow below, but not satisfactorily distinguishable as similarly coloured specimens occur elsewhere in species' range.
Notes
Phyllastrephus lorenzi (Sibley and Monroe 1990, 1993) is considered a synonym of Phyllastrephus icterinus following Fishpool (2006).