About United States Postal Service: Official Website :https://tools.usps.com/find-location.htm?location=1368694&utm_source=google-my-business-url&utm_medium=search&utm_campaign=yext&y_source=1_MzM5NzQ5Ny03MTUtbG9jYXRpb24ud2Vic2l0ZQ%3D%3D Official Usps Honolulu Customer Service: 1-800-275-8777 When a customer calls 1-800-ASK-USPS (1-800-275-8777), the customer service telephone number