Mason Post Office

755 Adams St, Mason, IL 62443

Contact Numbers

Phone: 618-238-4830
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 11:45am
Tuesday 11:45am
Wednesday 11:45am
Thursday 11:45am
Friday 11:45am
Saturday 9:15am
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
  • Lot 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:

Edgewood
807 Broad St
2.0 miles away

Watson
101 S Monroe St
3.6 miles away

Altamont
122 W Washington Ave
6.6 miles away

Effingham
210 N 3rd St
7.6 miles away

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