USPS Post Office Cpu Umsl Mail Services
8230 Florissant Rd, 63121 Saint Louis
Today
Today's opening hours
This week's opening hours
Retail
- Monday 8:30 am to 4:30 pm
- Tuesday 8:30 am to 4:30 pm
- Wednesday 8:30 am to 4:30 pm
- Thursday 8:30 am to 4:30 pm
- Friday 8:30 am to 4:30 pm
- Saturday Closed
- Sunday Closed
Other opening hours
Lobby
- Monday to Friday
- 8:30 am to 4:30 pm
- Saturday and Sunday
- Closed
PO Box Access
- Monday to Friday
- 8:30 am to 4:30 pm
- Saturday and Sunday
- Closed
Call Referral
- Monday to Friday
- 8:30 am to 4:30 pm
- Saturday and Sunday
- Closed
Opening hours updated on 11/07/2026
Report a changeThis Post Office at a glance
Opening hours of USPS Post Office Cpu Umsl Mail Services: Monday to Friday from 8:30 am to 4:30 pm; closed Saturday and Sunday.
- Opening hours a week
- 40h
- Opening hours a week
- Days open, Monday to Friday
- 5/7
- Days open, Monday to Friday
- Earliest opening, Monday to Friday
- 8:30 am
- Earliest opening, Monday to Friday
- Latest closing, Monday to Friday
- 4:30 pm
- Latest closing, Monday to Friday
- Open all day
- No break
- Open all day
Special days ahead
Public holidays, closures and special opening hours over the next two months.
- Wednesday, November 11 Veterans Day Opening hours not confirmed
- Thursday, November 26 Thanksgiving Day Opening hours not confirmed
- Friday, December 25 Christmas Opening hours not confirmed
- Friday, January 1 New Year’s Day Opening hours not confirmed
Services
Services Available: 5
Parking 1
Contacts 4
Last Collection 5
Sending from this Post Office
- First-Class Mail from From $0.65 up to Postcards
- Shipping Services from From $7.90 up to USPS Ground Advantage (2–5 days)
Indicative rates subject to change by the postal operator.
- Open
- Closing soon
- Closed
- Opening hours not confirmed
- This address
Practical information
Good to know
USPS Post Office Cpu Umsl Mail Services is in Saint Louis, at 8230 Florissant Rd. It opens on weekdays only, 5 days a week.
When it is closed, the nearest other offices are USPS Post Office Normandy - Saint Louis (0.9 mi) and USPS Post Office Ferguson - Saint Louis (1.7 mi).
The next public holiday is Veterans Day, Wednesday, November 11. Opening hours often change that day: check them before you go.
Frequently asked questions
Is USPS Post Office Cpu Umsl Mail Services open on Saturday?
No It is closed on Saturday.
Is USPS Post Office Cpu Umsl Mail Services open on Sunday?
No It is closed on Sunday.
What time does USPS Post Office Cpu Umsl Mail Services close?
It closes Monday to Friday at 4:30 pm.
Is there a cash machine?
This Post Office does not list a cash machine.