United States Postal Service 401 S Washington StChillicothe, MO, 64601 View Phone 800-275-8777 Alt: 660-646-1133 Fax: 660-646-4063 Toll Free: 800-275-8777 View Website Experience & Reliability USPS is hiring! See openings for top jobs. About Connect with this Business: Send to My Email Send to My Phone Print this Page