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 platycercus) [XC105355]
by Andrew Spencer from Malo Vega Creek, Costilla Co., Colorado, United States (call, call and wing noise)
Broad-tailed Hummingbird (Selasphorus platycercus) [XC564240]
by Richard E. Webster from Lyons, Boulder County, Colorado, United States (call, flight call, wing whirl)
Subspecies
In past, occasionally placed in Archilochus.
Proposed subspecies guatemalae (Guatemala) is poorly defined: morphological patterns and variation in size are clinal in character.