The Dwarf Vireo is endemic to Mexico's highlands, from Guanajuato south to northern Oaxaca.
Its head and back are olive gray-green, with a pale mark above the eye extending toward the bill and pale wing bars.
It lives in arid montane scrub. The AOS account gives a breeding elevation of about 1,500–2,400 m.
An extinction-risk assessment has not been added yet.