The U.S. Postal Service only sells flat-rate boxes for the purpose of sending Priority Mail. The Postal Service designates all other packages Parcel Post, now renamed Standard Post. It charges set prices for Priority Mai... More »

The differences in U.S. Postal Service shipping prices are due to the size of the package, the type of service the person is choosing and the distance to the mail's destination. The weight of the package also plays a rol... More »

United States Postal Service priority shipping takes one-to-three business days, and the arrival date depends on where the package originates and where it is being sent. USPS priority shipping to a military post office, ... More » Business & Finance Mail & Shipping Postal Services

Packages sent from Pennsylvania to Arizona via U.S. Postal Service Priority Mail may reach their destination in as little as two or three business days. Those shipped through USPS Standard Post service can take up to eig... More »

The U.S. Postal Service allows applicants to apply and pay for a post office box online. Applicants must pay online with a major credit card and bring the printed form and two types of ID to their chosen branch to confir... More »

As of 2015, the U.S. Postal Service offers two sizes of flat-rate boxes for Express one-to-two-day delivery. It also offers five sizes of flat-rate boxes for Priority one-to-three-day delivery. More »

A USPS Flat Rate Box offers one low flat rate, so pricing is determined by the size box you choose rather than the weight of the box or the destination of the package. More » Business & Finance Mail & Shipping Postal Services