E-Fauna BC: Electronic Atlas of the Wildlife of British Columbia

According to Williams et al., this species is found from "Mountain West from southern CA to AK and adjacent Canada, southeast through Western Desert Highlands of AZ, NM...moderately common in most of its range."

Reference: Williams, Paul, Robbin Thorp, Leif Richardson and Sheila Colla. Bumble Bees of North America: An Identification Guide. Princeton University Press.