USPS Post Office Cpu Ace Cinco Ranch
1720 S Mason Rd, 77450 Katy
Today
Today's opening hours
This week's opening hours
Retail
- Monday 9:00 am to 5:00 pm
- Tuesday 9:00 am to 5:00 pm
- Wednesday 9:00 am to 5:00 pm
- Thursday 9:00 am to 5:00 pm
- Friday 9:00 am to 5:00 pm
- Saturday 9:00 am to 2:00 pm
- Sunday Closed
Other opening hours
Lobby
- Monday to Saturday
- 9:00 am to 5:00 pm
- Sunday
- Closed
PO Box Access
- Monday to Saturday
- 9:00 am to 5:00 pm
- Sunday
- Closed
Call Referral
- Monday to Friday
- 9:00 am to 5:00 pm
- Saturday
- 9:00 am to 3:00 pm
- Sunday
- Closed
Opening hours updated on 11/07/2026
Report a changeThis Post Office at a glance
Opening hours of USPS Post Office Cpu Ace Cinco Ranch: Monday to Friday from 9:00 am to 5:00 pm, Saturday from 9:00 am to 2:00 pm; closed Sunday.
- Opening hours a week
- 45h
- Opening hours a week
- Days open, Monday to Saturday
- 6/7
- Days open, Monday to Saturday
- Earliest opening, Monday to Saturday
- 9:00 am
- Earliest opening, Monday to Saturday
- Latest closing, Monday to Friday
- 5:00 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: 1
Parking 1
Contacts 3
Last Collection 6
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 Ace Cinco Ranch is in Katy, at 1720 S Mason Rd. It opens 6 days a week, Saturday included.
When it is closed, the nearest other offices are USPS Post Office Katy (2.8 mi) and USPS Post Office Barker (3.6 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 Ace Cinco Ranch open on Saturday?
Yes It is open on Saturday from 9:00 am to 2:00 pm.
Is USPS Post Office Cpu Ace Cinco Ranch open on Sunday?
No It is closed on Sunday.
What time does USPS Post Office Cpu Ace Cinco Ranch close?
It closes Monday to Friday at 5:00 pm and Saturday at 2:00 pm.
Is there a cash machine?
This Post Office does not list a cash machine.