The Hyannis Post Office is most likely the busiest post office on Cape Cod. It is the only post office in Barnstable that offers passport services.
- Hours: Mon - Fri, 8:30am - 5:30pm; Sat, 9am - 1pm; Sun, closed
- Handicap Accessible: Ramp leading up to building
- Parking: Free lot, On-street: free
- Public restrooms: No
- Stamp machine: No
- P. O. boxes: Yes
- Packaging sold: Yes