U.S. POSTAL CODE DIRECTORY

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Directory coverage 42,735 ZIP Code records

Dorchester County Zip Codes



County State Zip Code City Area Codes
Dorchester County MD 21669 Taylors Island 410, 443, 667
Dorchester County MD 21672 Toddville 410, 443, 667
Dorchester County MD 21675 Wingate 410, 443, 667
Dorchester County MD 21677 Woolford 410, 443, 667
Dorchester County MD 21835 Linkwood 410, 443, 667
Dorchester County MD 21869 Vienna 410, 443, 667
Dorchester County SC 29420 North Charleston 843, 854
Dorchester County SC 29437 Dorchester 803, 839, 843, 854
Dorchester County SC 29447 Grover 843
Dorchester County SC 29448 Harleyville 803, 839, 843, 854
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ZIP codes are a system of postal codes used by the United States Postal Service (USPS) since 1963. The term ZIP, an acronym for Zone Improvement Plan, is properly written in capital letters and was chosen to suggest that the mail travels more efficiently, and therefore more quickly, when senders use the code in the postal address. The basic format consists of five decimal numerical digits. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the ZIP code, a hyphen, and four more digits that determine a more precise location than the ZIP code alone. The term ZIP code was originally registered as a servicemark (a type of trademark) by the U.S. Postal Service, but its registration has since expired.

ZIP codes designate only delivery points within the United States and its dependencies, as well as locations of its armed forces. There are no ZIP codes reserved for designating mail bound for foreign destinations (with the exception of U.S. military units stationed outside of the United States), and therefore, international outbound mail should not include a ZIP code in the delivery address. The last line of a foreign address must only show the name of the country of destination.

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