The Gray-headed Tanager is found in the peninsular lowlands of southeastern Mexico south through Belize, northern and eastern Guatemala, northern Honduras, western and eastern Nicaragua (Howell and Webb 1995), the Pacific slope and the northwestern portion of the Caribbean slope of Costa Rica (Stiles and Skutch 1989), and both slopes in Panama (Ridgely and Gwynne 1989). Occurs in northwestern Colombia, including the Magdalena valley (Hilty and Brown 1986), and in northern Venezuela (Hilty 2003). East of the Andes, this tanager is widespread from eastern Colombia south to central Peru and east across central Amazonian Brazil. Also occurs from northern Bolivia east across south central Brazil to São Paulo, and south to Paraguay. The Gray-headed Tanager is absent from the Orinoco and upper Rio Negro drainages (Ridgely and Tudor 1989). This tanager is fairly common, but patchily distributed with its center of abundance in the lower tropical elevational zone (Stotz et al. 1996). It is found from lowlands to 1700 m, but mostly below 600 m (Isler and Isler 1999).