Darien Post Office

25 Old Kings Hwy N Ste 18, Darien, CT 06820

Contact Numbers

Phone: 203-655-2595
Fax: 203-655-0863
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours







Lobby Hours
PO Box Access Available

Monday 24 hours
Tuesday 24 hours
Wednesday 24 hours
Thursday 24 hours
Friday 24 hours
Saturday 24 hours
Sunday 24 hours

Last Collection Times

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

Passport Appointment Hours*

Monday 9:00am - 3:00pm
Tuesday 9:00am - 3:00pm
Wednesday 9:00am - 3:00pm
Thursday 9:00am - 3:00pm
Friday 9:00am - 3:00pm
Saturday 9:00am - 12:00pm
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.

  • 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
  • Street 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:

Noroton Heights
264 Heights Rd
1.0 miles away

Rowayton
144 Rowayton Ave Ste 1
1.1 miles away

Camp Avenue
24 Camp Ave
2.1 miles away

Glenbrook
370 Hope St
2.1 miles away

Reviews

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We are having issues with mail not being delivered and mail being taken out of mailbox and not delivered..
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07 November, 2019 - I have been struggling with a company who i've sent 3 packages to claiming they have not received anything and telling me that there's no proof that I have sent it to the correct address (because on the USPS receipt it only shows the city and zip code - not the full address). I went to the Darien Post Office (30 Corbin Dr, Darien, CT 06820) where a wonderful lady, Lisa, was more than willing to help me get all the proof to provide to this company. not only was she super kind and empathetic with my situation, but she was able to print out for me the pages with all information of when and where the packages got delivered including pictures that they take of the packages showing that I wrote down the correct address etc.. Although I don't think this company would even care for this info, I am so very grateful for Lisa and all her help. Thank you Lisa!
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