Post Offices

Post Offices in & near Irwin, Idaho. Operating hours, locations, phone/fax number, services information.

Irwin Post Office

Post Office in Irwin, Idaho on Swan Valley Hwy. Operating hours, phone number, services information, and other locations.

Address: 3373 Swan Valley Hwy, Irwin, ID 83428
Phone: 208-483-2204
Fax: 208-483-2204
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:30am - 1:30pm
Tuesday 9:30am - 1:30pm
Wednesday 9:30am - 1:30pm
Thursday 9:30am - 1:30pm
Friday 9:30am - 1:30pm
Saturday Closed
Sunday Closed

Lobby Hours

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 1:30pm
Tuesday 1:30pm
Wednesday 1:30pm
Thursday 1:30pm
Friday 1:30pm
Saturday 12:00pm
Sunday Closed