USPS General Information Phone Number
USPS® Customer Service
Call 1-800-ASK-USPS® (1-800-275-8777)
Hours of Operation
Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET
USPS Telecommunications Device for the Deaf Phone Number
USPS® Customer Service
Telecommunications Device for the Deaf
(TDD)/Teletypewriter (TTY) Relay
Call 1-800-877-8339 and ask for 1-800-275-8777
Hours of Operation
Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET
USPS Tracking Phone Number
Domestic & International USPS Tracking™
1-800-222-1811
Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET
USPS Stamps Phone Number
Stamps
1-800-Stamp24 (1-800-782-6724)
Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET
USPS Technical Support Phone Number
Technical Support
1-800-344-7779
Monday – Friday 8 AM – 8:30 PM ET
Saturday 8 AM – 6 PM ET
USPS Free Shipping Supplies Phone Number
Free Shipping Supplies
1-800-610-8734
Monday – Friday 7 AM – 11 PM ET
Saturday 7 AM – 6 PM ET