US United States Major Regions Postal Code Details
๐๏ธ Frederick ยท Maryland
21710
Adamstown
21714
Braddock Heights
21758
Brunswick
21717
Buckeystown
21718
Burkittsville
21702
College Estates
21710
Doubs
21727
Emmitsburg
21702
Fort Detrick
21701
Frederick
21788
Graceham
21701
Hood College
21754
Ijamsville
21755
Jefferson
21716
Knoxville
21759
Ladiesburg
21774
Lake Linganore
21701
Lewistown
21762
Libertytown
21769
Middletown
21770
Monrovia
21771
Mount Airy
21773
Myersville
21774
New Market
21775
New Midway
21777
Point Of Rocks
21778
Rocky Ridge
21780
Sabillasville
21709
State Farm Ins Co
21788
Thurmont
21790
Tuscarora
21792
Unionville
21704
Urbana
21793
Walkersville
21798
Woodsboro
๐ฎUS United States Regional Postal Code FAQ & Postal Regulations
๐ฎ What is the format of a US ZIP code?
Standard format is 5 digits (e.g., 10001). Extended format is ZIP+4 (9 digits like 10001-1234) with a hyphen.
๐ How to find the ZIP code for an address?
Use the USPS ZIP Code Lookup tool by entering the full address on the official USPS website.
โ ๏ธ What happens if I use a wrong ZIP code?
Mail may be delayed, returned, or lost. For important documents, use USPS tracking and verify the ZIP code.
๐ Do ZIP codes ever change?
Yes, USPS may update ZIP codes due to regional adjustments. Always confirm your ZIP code after an address change.
๐ฆ Is a ZIP code required for international mail to the US?
Absolutely. Always include the US ZIP code at the end of the address (e.g., New York, NY 10001 USA).