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) [XC585126]
by Ron Overholtz from Wyman Canyon, Inyo County, California, United States (flight call)
Broad-tailed Hummingbird (Selasphorus platycercus) [XC493470]
by Thomas G. Graves from Allenspark, Boulder County, Colorado, United States (call, flight call, breeding display)
Subspecies
In past, occasionally placed in Archilochus.
Proposed subspecies guatemalae (Guatemala) is poorly defined: morphological patterns and variation in size are clinal in character.