Mastic Beach Post Office

110 Mastic Rd, Mastic Beach, NY 11951

Contact Numbers

Phone: 631-281-0359
Fax: 631-395-6728
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 5:45am - 5:30pm
Tuesday 5:45am - 5:30pm
Wednesday 5:45am - 5:30pm
Thursday 5:45am - 5:30pm
Friday 5:45am - 5:30pm
Saturday 5:45am - 3:30pm
Sunday Closed

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 3:30pm
Sunday Closed

*This facility does not process US Passports applications or renewals. Check nearby locations below.

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Business Reply Mail Account Balance
  • Business Reply Mail New Permit
  • Duck Stamps
  • General Delivery
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • Packaged Stamps
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street Parking

Visit our Links Page for links to Holiday Schedule, Change of Address, Hold Mail/Stop Delivery, PO Box rentals and fees, and Available Jobs.

*Please call to verify information. Is anything incorrect? Let us know here

Nearby Post Offices:

1450 Montauk Hwy
1.5 miles away

800 Montauk Hwy Ste 1
1.5 miles away

290 Montauk Hwy
1.9 miles away

2512 Montauk Hwy
2.7 miles away


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