Grenell Post Office
is currently closedThis USPS post office is located in Clayton, NY where the date and time is currently: 3/27/2026, 7:33:42 PM
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Retail Hours
| Day | Open | Close |
|---|---|---|
| Monday | 9:00 AM | 10:30 AM |
| Tuesday | 9:00 AM | 10:30 AM |
| Wednesday | 9:00 AM | 10:30 AM |
| Thursday | 9:00 AM | 10:30 AM |
| Friday | 9:00 AM | 10:30 AM |
| Saturday | 9:00 AM | 10:30 AM |
| Sunday | Closed | |
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Phone numbers
- Phone:315-686-3311
Services at Grenell Post Office
No dedicated parking. Here's what you can do at this location:
Shipping
- Priority Mail International
- Affordable international shipping with delivery in 6–10 business days to most countries. Includes tracking and insurance up to $200.
PO Box & Mail
- Accountable Mail Pickup
- Pick up items that require a signature: Certified Mail, Registered Mail, Collect on Delivery, insured packages, and Signature Confirmation items.
- Hold Mail Pickup
- Pick up mail that USPS has been holding while you were away. You can request a hold for up to 30 days through usps.com or at the counter.
Other Services
- Customer Service Referrals
- Staff can help answer questions or direct you to the right resource for issues with mail delivery, address changes, or other USPS services.