Post Offices in Mercer County, MO - Locations and Hours

Mercer County Post Offices

Click on the Post Office for all operating hours, servcies, and other information.

1. Mercer Post Office

Mercer, MO 64661

660-382-4917 Today 7:45am - 11:00am,
1:00pm - 3:45pm

2. Princeton Post Office

204 S Broadway St

Princeton, MO 64673

660-748-4245 Today 8:30am - 11:45am,
12:45pm - 4:30pm

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