El Salvador (NB), Honduras (NB), Mexico (NB), Nicaragua (NB), USA (B).
Vagrant to Belize, Panama.
Breeds in western USA from coastal mountains of southern Washington south to central and southern California (including Sierra Nevada). Migrates to non-breeding grounds mainly from northern Mexico south to northern Nicaragua, casually south to Costa Rica; also in smaller numbers to coastal southern California.
 
Population
Estimated population is 2,400,000 (2010).
Hermit Warbler (Setophaga occidentalis) [XC570243]
by Thomas Magarian from Alder Springs area, Glenn County, California, United States (song)
Hermit Warbler (Setophaga occidentalis) [XC150248]
by Paul Marvin from Kitchen Creek Rd (north section) Cleveland National Forest, San Diego Co, California, United States (call, song)