| McCoy Polygonal Barn | |
| Coordinates: | 40.865°N -94.9864°W |
| Area: | less than one acre |
| Built: | 1914 |
| Added: | June 30, 1986 |
| Refnum: | 86001469 |
The McCoy Polygonal Barn is a historic building located near Hepburn in rural Page County, Iowa, United States. It was built in 1914 as a hog sale barn.[1] The hexagon-shaped building features white horizontal siding, a large monitor with 12 windows, and an aerator. It is only one of five barns known to have been built on a farm in Iowa with a large monitor.[1] Because of this building's original use as a sale barn it was needed to provide the required amount of light. The barn has been listed on the National Register of Historic Places since 1986.