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MOUNT SINAI

MOUNT SINAI

457 ROUTE 25A
MOUNT SINAI, NY 11766-2069

Lot Parking Available
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(457 ROUTE 25A MOUNT SINAI, NY 11766)

800-ASK-USPS® (800-275-8777)

  • Phone 631-928-0394
  • Fax 631-476-3512
  • TTY 877-889-2457

Bulk Mail Acceptance Hours

  • Mon-Fri 9:00am - 2:00pm
  • Sat-Sun Closed

Retail Hours

  • Mon-Fri 9:00am - 5:00pm
  • Sat 9:00am - 1:00pm
  • Sun Closed

Last Collection Hours

  • Mon-Fri 5:00pm
  • Sat 1:00pm
  • Sun Closed

Lobby Hours

  • Mon-Fri 5:30am - 5:30pm
  • Sat 5:30am - 3:30pm
  • Sun Closed

PO Box Access Hours

  • Mon-Fri 5:30am - 5:30pm
  • Sat 5:30am - 3:30pm
  • Sun Closed

Global Express Guaranteed® Hours

  • Mon-Fri 5:00pm
  • Sat 1:00pm
  • Sun Closed

Pickup Services Hours

  • Mon-Fri 9:00am - 5:00pm
  • Sat 9:00am - 1:00pm
  • Sun Closed

PO Box Delivery Time

  • Mon-Sat 12:00pm
  • Sun Closed

On-Site Services

  • 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
  • Global Express Guaranteed®
  • Greeting Card Services
  • Label Broker (Retail)
  • Money Orders (Domestic)
  • Money Orders (Inquiry)
  • Money Orders (International)
  • PO Box Online
  • Pickup Accountable Mail
  • Pickup Hold Mail
  • Priority Mail International®

Nearby Self-Service Kiosks

Self-Service Kiosk
RONKONKOMA
200 HAWKINS AVE
RONKONKOMA NY 11779
Self-Service Kiosk
SMITHTOWN
25 ROUTE 111
SMITHTOWN NY 11787
Self-Service Kiosk
CENTRAL ISLIP
110 E SUFFOLK AVE
CENTRAL ISLIP NY 11722

Nearby Alternate Locations

US Post Office™
MILLER PLACE
47 ECHO AVE
MILLER PLACE NY 11764
US Post Office™
PORT JEFFERSON STATION
544 JEFFERSON PLZ
PORT JEFFERSON STATION NY 11776
US Post Office™
PORT JEFFERSON
407 E MAIN ST STE 17
PORT JEFFERSON NY 11777

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    MOUNT SINAI
    457 ROUTE 25A
    MOUNT SINAI, NY 11766-2069

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