I am assuming that you are referring to the City of Blackfoot. Blackfoot hosts the Eastern Idaho State Fair every Sept. with a parade, carnival & many booths in all varieties - animal showings, rodeo, concerts, etc. It's always a great time. Blackfoot also presents, "Blackfoot Pride Days" with a variety of events to promote the City & local businesses. The native American Shoshone-Bannock tribe, is a neighboring location which also hosts yearly events to promote their heritage.
If you have further questions about the area, please feel free to contact me.