South-eastern Brazil (from Río de Janeiro south to central Rio Grande do Sul) and adjacent eastern Paraguay (Canindeyú south to Guairá and Itapuá) and north-eastern Argentina (Misiones and Corrientes).
 
Population
Estimated population is unknown (2010) and decreasing.
Status NT
Habitat destruction and degradation through urbanisation, industrialisation, agricultural expansion, colonisation and associated road-building, is the main threat.
For more information see BirdLife International Species Factsheet.
Green-chinned Euphonia (Euphonia chalybea) [XC435459]
by Fernando Jacobs from Trilha dos Tucanos, Tapirai, S\u00e3o Paulo, Brazil (song)
Green-chinned Euphonia (Euphonia chalybea) [XC299618]
by Ricardo Jos\u00e9 Mitidieri from Monte Alegre, Tel\u00eamaco Borba, Paran\u00e1, Brazil (song)
Subspecies
Recent molecular-genetic analysis indicates that genus belongs in family Fringillidae.