| U.S. Post Office | |
| Nrhp Type: | cp |
| Nocat: | yes |
| Location: | Sycamore, DeKalb County, Illinois |
| Coordinates: | 41.9839°N -88.6942°W |
| Mapframe: | yes |
| Mapframe-Marker: | building |
| Mapframe-Zoom: | 12 |
| Mapframe-Caption: | Interactive map showing the location for U.S. Post Office-Sycamore |
| Architecture: | Classical Revival |
| Added: | May 2, 1978 |
| Partof: | Sycamore Historic District |
| Partof Refnum: | 78003104 |
The U.S. Post Office in Sycamore, Illinois, is listed on the National Register of Historic Places as part of the Sycamore Historic District. The district was designated and listed in May 1978. It stands directly across the street from another key structure in the district, the Sycamore Public Library and cross-corner from the district's largest structure, the DeKalb County Courthouse. It is open M-F from 8:30 am – 6:00 pm, Saturday from 9:00 am – 3:00 pm, and it is closed on Sunday.