There are 18 United States Postal Service post boxes and offices available to the public in Jefferson County. You can use any one of these locations to mail your letter or package via USPS. For additional collection boxes in neighboring communities, see the list of mailboxes in Idaho.
Post Offices and Mailboxes in Idaho
Where to buy postage stamps in Jefferson County, ID
Now you can print postage immediately using your home printer. Avoid trips to the Post Office. Print USPS postage online with Stamps.com. Get a 4 week trial if you Start Now.