The rest of the species, Ursus arctos, is referred to as grizzlies. This means, if you want to be technical, you're never likely to find brown bears in states like Colorado, so far from Alaska.

Greater Yellowstone Ecosystem grizzly bears — and Ursus arctos horribilis throughout its Lower 48 range — will remain protected by the Endangered Species Act if federal wildlife managers ...

Historically, grizzly bears (Ursus arctos horribilis) inhabited most of the western contiguous United States, while black bears (Ursus americanus) were common in forested areas throughout the country.