Post office in Mount Vernon

AgentData lists 23 post offices in Mount Vernon, United States. Updated May 2026.

23 businesses1 with websites
Bluford Post Office
Centralia Post Office

Centralia, 62801, IL

Du Bois Post Office
Fairfield Post Office
Hoyleton Post Office
Irvington Post Office
McLeansboro Post Office
Mount Vernon Post Office

Mount Vernon, 62864, IL

Nashville Post Office

South Kaskaskia Street, Nashville, 62263, IL

Opdyke Post Office
Rinard Post Office
Salem Post Office

125, South Delmar Avenue, Salem, 62881-9997, IL

Full profile
Scheller Post Office
Shattuc Post Office
United states Post Office

Main Street, Xenia

Also in Mount Vernon

Place of worship ()Elementary school ()Fast food restaurant ()Restaurant ()Campground ()Fuel supplier ()City or town hall ()Convenience store ()

Frequently asked questions

How many post offices are in Mount Vernon?

AgentData lists 23 post offices in Mount Vernon as of May 2026.

Which post offices in Mount Vernon have a website?

1 of 23 post offices in Mount Vernon have a website with verified contact details.

Is this data free?

Yes. AgentData is completely free — no credit card, no trial period, no paid tiers.

How is this data collected?

Business listings are sourced from OpenStreetMap and verified through our web crawler, which checks websites for email addresses, phone numbers, and technology stacks.

Access this data via API
GET /api/local-businesses?category=post-office&city=mount-vernon-il-us