Post Offices

Post Offices in & near Grain Valley, Missouri. Operating hours, locations, phone/fax number, services information.

Grain Valley Post Office

Post Office in Grain Valley, Missouri on W Walnut St. Operating hours, phone number, services information, and other locations.

Address: 112 W Walnut St, Grain Valley, MO 64029
Phone: 816-228-2024
Toll-Free: 1-800-Ask-USPS® (275-8777)
TTY: 877-889-2457

Retail Hours

Monday 9:30am - 11:30am, 12:30pm - 4:30pm
Tuesday 9:30am - 11:30am, 12:30pm - 4:30pm
Wednesday 9:30am - 11:30am, 12:30pm - 4:30pm
Thursday 9:30am - 11:30am, 12:30pm - 4:30pm
Friday 9:30am - 11:30am, 12:30pm - 4:30pm
Saturday 9:00am - 12:00pm
Sunday Closed

Lobby Hours

Monday 4:30pm
Tuesday 4:30pm
Wednesday 4:30pm
Thursday 4:30pm
Friday 4:30pm
Saturday 11:30am
Sunday Closed

Last Collection Times

Monday 9:30am - 11:30am, 12:30pm - 4:30pm
Tuesday 9:30am - 11:30am, 12:30pm - 4:30pm
Wednesday 9:30am - 11:30am, 12:30pm - 4:30pm
Thursday 9:30am - 11:30am, 12:30pm - 4:30pm
Friday 9:30am - 11:30am, 12:30pm - 4:30pm
Saturday 9:30am - 11:30am
Sunday Closed