They are 21014 and 21015.
There are dozens of zip codes for Baltimore, Maryland. See the related link.
One of the zip codes for Gaithersburg Maryland is 20877.
There are no ten digit zip codes. Maryland has many five digit zip codes and many many more nine digit zip+4 codes. There can be a unique nine digit zip+4 code for every mailbox in a post office building and for at least every block in a town or city!
Each U.S. state normally has hundreds of zip codes, and Maryland is no exception. You can try searching at the Related Links below, or you can ask your question again, this time naming the specific town/city in Maryland you're interested in, or, if you can, the exact address you're interested in.
Difficult to determine without ZIP codes.
Find out here: http://www.usps.comAccording to http://www.wikipedia.orgThe area of Bel Air is located in the 90077 (Bel Air Estates & Beverly Glen) Zip Code, both of which are part of the city of Los Angeles. Of several entrances, there are two main ones: The East Gate at Beverly Glen and Sunset Boulevards, and the West Gate at Bellagio Road and Sunset Boulevard, opposite an entrance for UCLA.
Zip Codes are only used in the United States. There are no international zip codes.
Numbers are used in zip codes.
Air brakes have absolutely no determination on whether or not a vehicle requires a CDL. Zip. Zilch. Nada. Not just in Maryland, but in any state.
27 zip codes
OK. States don't have Zip Codes. Cities have Zip Codes. You can get the complete list of ZIP codes in California under different Cities from here: http://www.zip4all.com/california/ca/ .
There are approximately 43000 zip codes. Number of ZIP codes periodically changes. For example, around 200 zip codes were added in the U.S. in 2006-2007.