The Greenhills Post Office is a contracted postal station operated by the Village of Greenhills. It is located at 22 Endicott, opposite the Village Commons (next to the Public Library).
The Post Office hours are:
10 AM until 6 PM Monday through Friday, with the last mail pickup at 5:00 PM
Also for your convenience, there is a drive-through drop box that gets picked up at Noon on weekdays.