Secretary MD ZIP Code
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Secretary city is located in Maryland State, Dorchester County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Secretary MD zip code by its streets and block numbers if we have some of the Secretary streets loaded in our website
Secretary Area Code is 410/443 and Time Zone is Eastern (GMT -05:00).
Secretary Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Secretary City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Secretary ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Secretary, Maryland.
The Secretary Zip Code is 21664.
If you want to send a mail to Secretary City, you should use the 21664 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Secretary ZIP code system that it called ZIP+4, often called "plus-four codes", "add-on codes", or "add ons". A ZIP+4 code uses the basic 21664 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Secretary city block, a group of apartments, an individual high-volume receiver of mail or any other unit that could use an extra identifier to aid in efficient mail sorting and delivery in Maryland.