Brand Certified
United States Postal Service
3.9(31 reviews)
Certified by United States Postal Service • Aug 16, 2026
Business Details
112 W Walnut St, Grain Valley, MO
64029, United States
Certified by United States Postal Service • Aug 16, 2026
(800) 275-8777
Certified by United States Postal Service • Aug 16, 2026
http://usps.com/postoffice
Certified by United States Postal Service • Aug 16, 2026
About
Certified by United States Postal Service • Aug 16, 2026
Post OfficeShipping ServiceCargo ServicePackaging Supply StoreLogistics ServiceMoney Order ServiceVisa and Passport OfficeUnited States Postal Service
Visit your local Post Office™ at 112 W Walnut St to find everything you need to send mail and ship packages. Explore our other products and services like money orders, Post Office™ boxes, passports, gift cards, and more
Location
Certified by United States Postal Service • Aug 16, 2026
Hours
Certified by United States Postal Service • Aug 16, 2026
Monday9:30 AM - 11:30 AM12:30 PM - 4:30 PM
Tuesday9:30 AM - 11:30 AM12:30 PM - 4:30 PM
Wednesday9:30 AM - 11:30 AM12:30 PM - 4:30 PM
Thursday9:30 AM - 11:30 AM12:30 PM - 4:30 PM
Friday9:30 AM - 11:30 AM12:30 PM - 4:30 PM
Saturday9:00 AM - 12:00 PM
SundayClosed
Products & Services
1 list · 31 items
Reviews
3.9
31 reviews
5 stars
22
4 stars
1
3 stars0
2 stars0
1 star
8
- WCWayne CrawfordJul 31, 20265.0There was no wait when I took my package in to be mailed. Customer service was fantastic
- LWLisa WareJul 22, 20265.0I love coming in here. They always take care of me and they're friendly people. One time I was short on money and I didn't know it and I was buying a stamp and the lady behind the counter her name is Lisa.... She paid for it for me
- BTB TMay 7, 20265.0I’ve been coming to this USPS location for at least six months now, and the customer service has consistently been outstanding. All three ladies who work here are incredibly patient, professional, and helpful every single visit. They always handle my packages carefully and professionally, which gives me confidence and peace of mind every time I ship something. It’s clear they truly care about doing their job the right way and making sure customers are taken care of. Even during busy times when they are clearly overworked, they never take their frustration out on customers and always remain respectful, calm, and kind. That level of professionalism is rare and truly appreciated. same qualities and dedication. I’m very glad I discovered this I honestly wish every USPS location had employees with the office and wanted to recognize the excellent service they provide to the community.
- MTMary TackettJan 1, 20201.0If u want your mail delivered to the right box or house get any other place than Grain Valley puts office than Grain Valley to care of you. Have had to take other neighbors mail back to the post office for the past few years to re-delivered or I deliver it to the right place Now paid up for one year of service and call to tell them to hold service and they cut service and close my box after 30 some years of having same box, they need office people to do there jos or get another job. Now the new year comes and have to fight with the US post office to start the new year, hope Insurance company , utility companies , my work , banks, family members will call instead of sending mail back , how many others have problems other than myself that can not depend on Grain Valley post office, please report to main post office
- RRRachelMay 16, 20194.0Staff is helpful getting packages to the destination and determining best way for best price. I wish they were open later!
Frequently Asked Questions About United States Postal Service
Can I get a passport application at this Post Office?
Yes, Thousands of Post Offices™ accept first-time passport applications for the U.S. Department of State. Most of those locations can also take your passport photo. Please complete and print your passport application form before you apply.
Is an appointment needed for passport services?
Most Post Offices that offer passport services have set hours, and you'll need to schedule an appointment using our online scheduler. We also offer limited Passport walk-in hours at select locations.
Does this location take the photo needed for passports?
For first-time passport and photo services, please make an appointment using our online scheduler.
What is the cost to take a passport photo?
The current fee for a passport photo at USPS is $15.
When does this location do walk-in passports?
We offer limited Passport walk-in hours at select locations.
Can I get a PO Box online?
Yes, you can search for available PO Boxes and reserve one online at https://www.usps.com/manage/po-boxes.htm. The process is quick and secure, and you'll receive instructions for completing your setup in person.
How much is a small PO Box?
PO Box prices vary by location. You can check exact pricing for your area by visiting https://www.usps.com/manage/po-boxes.htm and entering your ZIP Code.
Can you get to the PO Boxes in the lobby after hours?
Most USPS locations offer 24/7 access to PO Boxes in the lobby. Access hours may vary by location, so check with your local Post Office for specific lobby hours.
How can I get a PO Box?
You can apply for a PO Box online or in person at your local Post Office. Just bring two valid forms of ID and your completed application if applying in person. To start online, visit https://www.usps.com/manage/po-boxes.htm.
What time can I check my PO Box weekly and on weekends?
You can check your PO Box during lobby hours, which often include extended hours or 24/7 access. Weekend access may vary. Check with your local Post Office for exact times.
What services are available at the United States Postal Service location in Grain Valley?
This Post Office offers mailing and shipping services, money orders, PO Boxes, passport application services, gift cards, and more.
Can I apply for a U.S. passport at this Grain Valley Post Office?
Yes, this location accepts first-time passport applications and many also provide passport photo services. You should complete and print the application form before applying.
Do I need an appointment for passport services at the Grain Valley Post Office?
Most Post Offices offering passport services require you to schedule an appointment online, but limited walk-in hours are available at select locations.
What are the operating hours of the Grain Valley United States Postal Service?
Monday through Friday, open 9:30 AM to 11:30 AM and 12:30 PM to 4:30 PM; Saturdays 9:00 AM to 12:00 PM; closed on Sundays.
How can I reserve a PO Box at this Post Office?
You can search for and reserve a PO Box online securely, then visit the location to complete the setup with two valid forms of ID.
Is there 24/7 access to PO Boxes at the Grain Valley Post Office?
Most USPS locations offer 24/7 lobby access to PO Boxes, but access hours may vary, so check with this Post Office for details.
Where can I find nearby dining options after visiting the Grain Valley Post Office?
You can visit nearby restaurants like Rivera Maya Mexican Restaurant, Gambino's Pizza, El Tequilazo, or Slinger's Saloon for a meal or pizza.
Are there entertainment or leisure spots near the Grain Valley Post Office?
Yes, nearby entertainment includes Main Street Pinball arcade, Valley Moments event venue, and Field Five batting cage stadium.
How can local businesses or services near the Post Office complement my visit?
You can visit nearby service providers like Heather Wheeler Insurance Agency or The Patel Group Property Management for related personal or business needs.
Does the Grain Valley Post Office offer any online tools or apps for customer convenience?
Yes, customers can use the USPS mobile apps available on iOS and Android to access services, track packages, and schedule appointments.
Brand Certified Facts from United States Postal Service
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