en.wikipedia.org/wiki/United_States_Postal_Service

The United States Postal Service is an independent agency of the executive branch of the United States federal ...

www.usps.com

Add a tracking number. Clear text field. Track · Informed Delivery · Buy Stamps · Prices · Click-N-Ship · Locations · ZIP Codes · Schedule Pickup · Hold Mail ...

www.usps.com/ship

Learn how USPS mail services can make mailing and shipping easier.

www.usps.com/manage/welcome.htm

With USPS you can manage mail delivery for your home, business, or PO Box ...

www.usps.com/shipping/trackandconfirm.htm

The easiest tracking number is the one you don't have to know. With Informed ...

www.usps.com/help/welcome.htm

Find answers to your questions about USPS products or services, get ...

www.usps.com/ship/mail-shipping-services.htm

USPS mail services offer price, speed, and delivery options for letters, ...

www.usa.gov/federal-agencies/u-s-postal-service

Directory listing for U.S. Postal Service. ... The Postal Service provides mail processing and delivery services to individuals and businesses in the U.S. ...

www.stamps.com/usps/postage-help-center

Get current USPS postage rates, track packages, and learn about USPS mail classes and special services.