Western and west-central USA (southern Idaho and northern Wyoming south to eastern California, Arizona and south-western Texas) south through upland Mexico to highlands of Guatemala. Northern populations winter in Mexico and Guatemala.
 
Population
Estimated population is 4,000,000 (2010).
Broad-tailed Hummingbird (Selasphorus) [XC132835]
by Richard E. Webster from Portal, Arizona, United States (call, wing whine)
Broad-tailed Hummingbird (Selasphorus platycercus) [XC105356]
by Richard E. Webster from Malo Vega Creek, Costilla Co., Colorado, United States (call, call and wing noise)
Subspecies
In past, occasionally placed in Archilochus.
Proposed subspecies guatemalae (Guatemala) is poorly defined: morphological patterns and variation in size are clinal in character.