Southern Peru (from south-eastern Arequipa and southern Puno) south to northern Chile (highlands of Aricaâ€"Parinacota region) and south-western Bolivia (western Oruro and western Potosí).
 
Population
Estimated population is unknown (2010).
White-throated Sierra Finch (Phrygilus erythronotus) [XC60113]
by id from Putre, Parinacota, I Region, Chile (call)
White-throated Sierra Finch (Phrygilus erythronotus) [XC28387]
by Andrew Spencer from Tarapac\u00e1: 15 km W Laguna Parinacota, Chile (call, contact calls)
Subspecies
No subspecies.
Molecular-genetic studies indicate that genus belongs in tanager family (Thraupidae). May form a superspecies with Red-backed Sierra-Finch (Ephippiospingus dorsalis), and has been suggested as being conspecific. Hybridization between the two reported, although without specimen evidence or a detailed analysis. Recent molecular results indicate that Red-backed Sierra-Finch (Ephippiospingus dorsalis) is sister to the "hooded" group (Black-hooded Sierra-Finch (Phrygilus atriceps), Peruvian Sierra-Finch (Phrygilus punensis), Grey-hooded Sierra-Finch (Phrygilus gayi) and Patagonian Sierra-Finch (Phrygilus patagonicus)) and Sicalis, and this may apply also to present species. Further study is required.