Marathon Post Office

5171 Overseas Hwy, Marathon, FL 33050

Contact Numbers

Phone: 305-743-5238
Fax: 305-433-9189
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

Monday 6:00am - 5:30pm
Tuesday 6:00am - 5:30pm
Wednesday 6:00am - 5:30pm
Thursday 6:00am - 5:30pm
Friday 6:00am - 5:30pm
Saturday 6:00am - 4:00pm
Sunday Closed

Last Collection Times

Monday 11:00am
Tuesday 11:00am
Wednesday 11:00am
Thursday 11:00am
Friday 11:00am
Saturday 11:00am
Sunday Closed

Passport Appointment Hours*

Monday 11:00am - 4:00pm
Tuesday 11:00am - 4:00pm
Wednesday 11:00am - 4:00pm
Thursday 11:00am - 4:00pm
Friday 11:00am - 4:00pm
Saturday Closed
Sunday Closed

  • Visit our Passport FAQ page for a complete overview of what to bring, what you need to know, and how long it will take.
  • You will need two forms of Identification with copies.
  • A passport quality photo. Available at location.
  • The appropriate application form printed and filled out, and the required fee for applying or renewing.
  • You can find up to date costs, information, and forms at the State Departments Travel Site

*An appointment is required to apply for or renew US Passports. Please Call or schedule online.

Bulk Mail Acceptance Hours

Monday 8:30am - 3:00pm
Tuesday 8:30am - 3:00pm
Wednesday 8:30am - 3:00pm
Thursday 8:30am - 3:00pm
Friday 8:30am - 3:00pm
Saturday Closed
Sunday Closed

  • Bulk Mail Acceptance
  • Bulk Mail Account Balance
  • Bulk Mail New Permit
  • Burial Flags
  • Business Line
  • 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
  • Passport Acceptance
  • Passport Photo
  • Philatelic Services
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Lot Parking
  • Passport Appointment Hours

Visit our Links Page for 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:

Marathon Shores
11400 Overseas Hwy Ste 120
1.9 miles away

Key Colony Beach
600 W Ocean Dr
2.5 miles away

Long Key
68340 Overseas Hwy
11.5 miles away

Big Pine Key
29959 Overseas Hwy
11.6 miles away


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Horrible. Honestly. Marathon local… I got a package of photos from school for my kids, and it says on the package.. “FRAGILE, PHOTOGRAPHS ENCLOSED, HANDLE WITH CARE.” The package got folded in half like a taco and shoved into our mailbox. Do you guys even care?


Hello My wife and I have had our mailed forwarded too our box 98W In Key by the Sea 6099 Overseas Highway Marathon and thought we would be there this weekend however because of storm we had to delay.My question will you hold mail for us once our box at the park gets filled? Sincerely Kirk & Julia Kaefer 414-614-3895


I mailed a package last Tuesday, January 29th, from this location - and the package arrived at my home badly damaged on Wednesday, February 6th - I checked with the local post office - I was overcharged for the postage and given incorrect advise as to the proper delivery service to request. Our local delivery person was quite upset at the condition of the packge


Service at the Layton post office is poor. If u are a working person u have no ability to use the USPS services because of the time limitations of the employees.

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