East Helena Post Office Hours


Retail Hours

Contact Numbers:

Phone: 406-227-5325
Monday-Friday 9:00am - 5:00pm
Saturday-Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 9:00am - 3:00pm
Saturday-Sunday Closed

Monday 7:00am - 5:30pm
Tuesday-Friday 7:30am - 5:30pm
Saturday 7:15am - 1:00pm
Sunday Closed

Lobby Hours

Monday-Sunday 12:01am - 11:59pm

Monday-Sunday 12:01am - 11:59pm

PO Box Delivery Time

USPS Shipping Rate Calculator

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Donald F Knight (Postmaster) don.knight@usps.gov
607 E Porter St
East Helena, MT 59635

The East Helena Post Office is located in the state of Montana within Lewis and Clark County. This location serves 7,282 East Helena residents with a median income of $61,611. It's estimated that approximately 11,623 packages pass through this post office each year.

East Helena Post Office Location


East Helena Montana Local Links