USPS - Frederiksted Post Office Posted on March 9, 2021 (April 30, 2025) by myviadmin USPS - Frederiksted Post Office Claimed 1 2 3 4 54.001 St. Croix Post Office Service Bookmark Contact Information 1 Mars Hill Rd, Frederiksted, 00840 340-772-0040 https://tools.usps.com/locations/deta... LocationSt. Croix Get Directions By car By public transit Walking Bicycling Detailed Information Accessible Beach Front Outdoor Indoor American Express Travelers Check Personal Check Discover Mastercard Visa Cash Sunday Closed Monday 7:30 am - 4:30 pm Tuesday 7:30 am - 4:30 pm Wednesday 7:30 am - 4:30 pm Thursday 7:30 am - 4:30 pm Friday 7:30 am - 4:30 pm Saturday 7:30 am - 12:00 pm