Sheldahl is a city in Polk, Boone, and Story counties in the U.S. state of Iowa. The population was 297 at the time of the 2020 census. The Boone County portion of Sheldahl is part of the Boone Micropolitan Statistical Area, while the Story County portion is part of the Ames Metropolitan Statistical Area. Together, these two areas form the Ames–Boone Combined Statistical Area.