U.S. Forest Service spokesman Ralph Bellah said Thursday the fire has destroyed about three square miles near Wetmore, an unincorporated town in Custer County about 100 miles south of Denver.
About 380 people were evacuated after the fire broke out Tuesday and quickly grew in winds gusting up to 80 miles an hour.
The fire forced authorities to go door-to-door to evacuate seven more homes in neighboring Pueblo County.
Pueblo County authorities said most of their residents have been allowed to return home.
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