Armonk Post Office

403 Main St, Armonk, NY 10504

Contact Numbers

Phone: 914-273-6731
Fax: 914-273-2794
TTY: 877-889-2457
Toll-Free: 1-800-Ask-USPS® (275-8777)

Retail Hours

Lobby Hours
PO Box Access Available

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

Last Collection Times

Monday 5:00pm
Tuesday 5:00pm
Wednesday 5:00pm
Thursday 5:00pm
Friday 5:00pm
Saturday 2:00pm
Sunday Closed

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

  • 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)
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • PO Box Online
  • Street Parking

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:

107 N Greeley Ave
2.7 miles away

822 Commerce St
2.7 miles away

Mount Kisco
3 Morgan Dr
2.8 miles away

10 Cleveland St
3.1 miles away


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Service is spotty at best. There are days when we do not receive any delivery. This is not because there was no mail to deliver. Of that I am 100 percent certain. As a business owner, we depend on daily service.


This post office does not answer the phone . They let it ring then disconnect the connection. The postman seem to deliver mail when they choose too. Great job if you can get it. This week we have not gotten mail Monday or Tuesday. Talk about a golden parachute.

* is not a part of, or affiliated with, the official United States Postal Service (USPS).