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Clinton Post Office Hours

Retail Hours

Monday-Friday 8:30am - 5:00pm
Saturday 8:30am - 12:30pm
Sunday Closed

Bulk Mail Acceptance Hours

Monday-Friday 8:30am - 4:00pm
Saturday-Sunday Closed

Monday-Friday 6:00am - 5:30pm
Saturday 6:00am - 3:30pm
Sunday Closed

Lobby Hours

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

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

PO Box Delivery Time

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← Back to De Witt County

David Donnelly (Postmaster)
105 N Quincy St
Clinton, IL 61727

The Clinton Post Office is located in the state of Illinois within De Witt County. This location serves 10,015 Clinton residents with a median income of $49,231. It's estimated that approximately 15,985 packages pass through this post office each year.

Clinton Post Office Location 61727

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