Argentina, Bolivia, Brazil, Paraguay, Peru, Uruguay (B).
Breeds from central and eastern Bolivia and central Brazil (southern from central Mato Grosso, central Goiás and Espírito Santo) south to northern Argentina (south to La Pampa and Buenos Aires) and Uruguay; in non-breeding season occurs north to south-eastern Peru, northern Bolivia and north-central Brazil.
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is unknown (2010).
White-rumped Swallow (Tachycineta leucorrhoa) [XC674326]
by JAYRSON ARAUJO DE OLIVEIRA from Santa Rita do Novo Destino, Goi\u00e1s, Ch\u00e1cara Jayrson, Brazil (song)
White-rumped Swallow (Tachycineta leucorrhoa) [XC599517]
by Luiz C. Silva from Reserva do Setor S\u00edtio de Recreio Cara\u00edbas-Goi\u00e2nia, Goi\u00e1s, Brazil (flight call, song)
Subspecies
No subspecies.
This species (and, by extension, Tumbes Swallow (Tachycineta stolzmanni)), along with Tree Swallow (Tachycineta bicolor), White-winged Swallow (Tachycineta albiventer), Mangrove Swallow (Tachycineta albilinea) and Chilean Swallow (Tachycineta meyeni), sometimes placed in separate genus Iridoprocne, but DNA studies indicate close relationship of these taxa with clade consisting of Violet-green Swallow (Tachycineta thalassina), Golden Swallow (Tachycineta euchrysea) and Bahama Swallow (Tachycineta cyaneoviridis), and support placement of all in a single genus. Forms a superspecies with Chilean Swallow (Tachycineta meyeni) and formerly considered conspecific owing to similarities in morphology and voice, but comparison of DNA sequences supports treatment as separate species.