Postal Services
Skip to main contentDiGiorgio Campus Center Lower Level, Rock Hill, SC  29733  •  803/323-2293   

Who's Who in the Post Office

Transaction Times and Route Schedule

Preparation for Departmental Pick-Up

Intra-Campus Mail

Metered Mail

What Are You Mailing

Choosing a Service for Mailing

Adding Extra Services

Addressing Your Mailing

Service Endorsements Reference Chart

Preparing Packages for Mailing

Correct State Abbreviations for Mailing

US Postal Service Rates Chart for Postage

Standard Mailing Preparation

Ways To Save Money On Your Mailings

Metered Mail

Postal Employee separating mailMail to be metered must have the department postal code attached to either each piece of mail via an imprint of the code incorporated in the return address or a card or paper available that can be placed with the mail picked up by the route personnel.  Any mail received that has a different postal card or account number than the return address will be charged to the return address account, unless the post office has been otherwise notified by the department being charged.

Mail classified as “flats” which includes Manila envelopes and mail exceeding 11 ˝ inches in length and larger than 6 1/8 inches in height and packages must be labeled with the service desired. Any mail that is not labeled "Priority Rate" will be sent at the lowest rate available for the weight of the piece.  This will include "Library Rate" for a flat mailing exceeding 9oz.

Library Rate

All mail pertaining to education material may be sent at “Library Rate”. Although Library rate should not be used on items weighing less than nine ounces, a very substantial savings can be made on items over nine ounces. For example, from six ounces to one pound Library rate is $2.26, from 1 to 2 pounds is $2.63. First class is $2.24 for 9 ounces; it raises 17 cents per ounce until it reaches 2.92 for 13 ounces. Mail weighing over 13 ounces is $4.95 up to one pound.

As you can see Library rate should definitely be considered when mailing items over 9 ounces. Classes. Rates can be found under “Choosing a Service for Mailing” and the “Postage Rate Chart” on this web site. Comparison-shopping is always the best option when a budget has to be considered.
The web site also has a section available titled "Ways To Save Money On Your Mailings".
Priority Mail

 Priority mail is a not guaranteed, two to three day service offered by the Post Office.  The Federal Post Office does give special handling to Priority Mail and usually gets it delivered within the time suggested.

The Federal Postal Services offers free envelopes and boxes that can be used for all Priority mail. This can be very beneficial for departments who are budget conscious, as the shipping material is of top quality and the design makes them receive very efficient Priority service. The Winthrop Post Office has the most commonly used shipping material in the office and can supply up to 10 pieces upon request. Anyone needing larger amounts or cases of these supplies can contact us, and we will be happy to order them for you. Two weeks must be allowed for delivery. These materials can be ordered directly from the US Postal Service through internet by using then choose the supplies key.

Air Mail

All letter mail going outside of the 50 states of the United States is sent Air Mail. Although domestic mail often goes by plane it is not to be marked Air Mail. Any other mail including Mexico and Canada must have airmail written on the address side of the envelope.

All international mail must be kept separate from domestic mail. When your postal specialists pick-up the mail from your department, and bring it back to the Post Office, unless campus mail and airmail is banded separately they will be run through the meter at domestic postal rates. When the mail comes in we do not read each address we send through the meter, so unless this mail is properly marked and kept separate, it will receive first class postage according to the weight of the letter.

Letters up to 1 ounce and postcards to Canada are 75 cents and 79 cents for Mexico All other countries are $1.24 for the first ounce.  Please refer to the "USPS Rate Chart" in this web site as the rates change for each additional ounce.

United States Postal Service


Rock Hill, South Carolina   29733
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