Bahamas, Belize, Canada, Guatemala, Mexico, Turks and Caicos Islands, USA (B).
Vagrant to Cuba.
Breeds patchily in south-western USA from southern Idaho and Wyoming south to Arizona, New Mexico and south-eastern Texas. Migrates to western and southern Mexico (from northern Jalisco and Guanajuato, occasionally from Nayarit, south to southern Oaxaca).
 
Rarity Status
Currently this species is not classified as a rarity in this country OR information has not been updated.
Population
Estimated population is 400,000 (2010).
Forms a superspecies with Nashville Warbler (Leiothlypis ruficapilla), sometimes with Colima Warbler (Leiothlypis crissalis) also included and all have been considered conspecific, but such an arrangement not generally accepted.