Hello friends! As you know USPS is the major independent postal service authority functioning across the US. So you could require the USPS Customer Care Phone Number if you have any query regarding USPS products or services. It has a separate department of the customer care team who will answer your queries and help you know the status of your package.
The USPS Customer Care number is 650-377-1334. If you are living in the US then use this number to get answers to any questions regarding your package or mail.