All of the post offices in the city of Mount Vernon, IL

This page details the 2 post offices in Mount Vernon, IL helping you identify the ones that open the earliest or close the latest in your vicinity. The hours mentioned represent the retail hours of operation, a period when staff are present to assist with mailing services and other customer needs. Additionally, many post offices offer extended lobby hours, during which you can access your PO box, leave packages for shipment, or purchase postage via the self-service Automated Postal Center (APC) machines. The listings are organized first by city in alphabetical order, followed by the post office name, and include Street View images of the post offices where possible. Please contact us if you find an error, so that we can correct it.

Street View Image of Mount Vernon Post Office in Mount Vernon, IL

Mount Vernon Post Office is currently closed

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
301 S 10th St Mount Vernon, IL 62864

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Open hours
Day Open Close
Monday 8:30 AM 5:00 PM
Tuesday 8:30 AM 5:00 PM
Wednesday 8:30 AM 5:00 PM
Thursday 8:30 AM 5:00 PM
Friday 8:30 AM 5:00 PM
Saturday 9:00 AM 11:00 AM
Sunday Closed
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Street View Image of Mount Vernon Carrier Annex Post Office in Mount Vernon, IL

Mount Vernon Carrier Annex Post Office does not have retail services

For parking and list of services available, visit the official USPS page for post this post office location.

Post office address
1301 Broadway St Mount Vernon, IL 62864

Get directions

Open hours
Day Open Close

Phone: 618-242-0700

  • Stamps.com logo
    Buy postage online
    Discounted USPS and UPS rates of up to 84%.
    Promo code
    STAMPS100
    $100 value