The Reunion Grey White-eye is endemic to Réunion. Highland populations contain grey and brown plumage morphs, and the species also uses gardens, cultivated areas, and savannas created by people.
In highland populations, birds occur in both predominantly grey and predominantly brown plumage morphs.
It has colonized human-created habitats such as gardens, cultivated land, and savannas, and is found from the coast to the mountain tops.
An extinction-risk assessment has not been added yet.