The Power County Courthouse, at 543 Bannock Ave. in American Falls, Idaho is a historic building that includes Classical Revival and Prairie School architecture. It was a work of architect C. A. Sundberg and was built in 1925. It was listed on the National Register of Historic Places in 1987. According to a 1987 review, this courthouse and the Teton County Courthouse are the only two courthouses in Idaho whose architecture shows Prairie School influence.