USPS - Kingshill Post Office Posted on March 9, 2021 (October 13, 2025) by myviadmin USPS - Kingshill Post Office Zip Codes 00850 (Streets) and 00851 (PO Box)… Claimed 1 2 3 4 53.004 St. Croix Post Office Service Bookmark Contact Information #2 Est. Kingshill, 00850 340-778-0199 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 - 5:00 pm Tuesday 7:30 am - 5:00 pm Wednesday 7:30 am - 5:00 pm Thursday 7:30 am - 5:00 pm Friday 7:30 am - 5:00 pm Saturday 7:30 am - 12:00 pm