SUMNER — Post Office™
SUMNER — Post Office™
10674 West St. Charles Road
Sumner, MI 48889
1-800-ASK-USPS® (800-275-8777)
Phone: 989-833-7409
TTY: 877-889-2457
Business Hours:
Retail Hours:
Monday-Friday 11:30AM-1:30PM
Saturday 11:30AM-12:30PM
Lobby Hours:
Monday-Friday 6AM-6PM
Saturday 6AM-6PM
