Havre De Grace MD ZIP Code
Havre De Grace city is located in Maryland State, Harford County and has a unique zip code assigned by the US Postal Service Office.
You can search for the Havre De Grace MD zip code by its streets and block numbers if we have some of the Havre De Grace streets loaded in our website
Havre De Grace Area Code is 443/410 and Time Zone is Eastern (GMT -05:00).
Havre De Grace Zip Code - Maryland
The US ZIP Code basic format consists of five decimal numerical digits assigned to the Havre De Grace City. An extended ZIP+4 code, introduced in the 1980s, includes the five digits of the Havre De Grace ZIP code, a hyphen, and four more digits that determine a more specific location within a given ZIP code in Havre De Grace, Maryland.
The Havre De Grace Zip Code is 21078.
If you want to send a mail to Havre De Grace City, you should use the 21078 Zip Code.
In 1983, the U.S. Postal Service introduced an expanded Havre De Grace 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 21078 Zip code plus four additional digits to identify a geographic segment within the five-digit delivery area, such as a Havre De Grace 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.