217
- 21701 Frederick
- 21702 Frederick
- 21703 Frederick
- 21704 Frederick
- 21705
- 21710 Adamstown
- 21711 Big Pool
- 21713 Boonsboro
- 21714 Braddock Heights
- 21716 Brunswick
- 21717 Buckeystown
- 21718 Burkittsville
- 21719 Cascade
- 21722 Clear Spring
- 21723 Cooksville
- 21727 Emmitsburg
- 21733 Fairplay
- 21734 Funkstown
- 21737 Glenelg
- 21738 Glenwood
- 21740 Hagerstown
- 21742 Hagerstown
- 21746
- 21750 Hancock
- 21754 Ijamsville
- 21755 Jefferson
- 21756 Keedysville
- 21757 Keymar
- 21758 Knoxville
- 21762 Libertytown
- 21766 Little Orleans
- 21767 Maugansville
- 21769 Middletown
- 21770 Monrovia
- 21771 Mount Airy
- 21773 Myersville
- 21774 New Market
- 21776 New Windsor
- 21777 Point Of Rocks
- 21778 Rocky Ridge
- 21779 Rohrersville
- 21780 Sabillasville
- 21781
- 21782 Sharpsburg
- 21783 Smithsburg
- 21784 Sykesville
- 21787 Taneytown
- 21788 Thurmont
- 21790 Tuscarora
- 21791 Union Bridge
- 21793 Walkersville
- 21794 West Friendship
- 21795 Williamsport
- 21797 Woodbine
- 21798 Woodsboro