| Zip code | Name | Area Code(s) |
| 21501 Cumberland (301/240/227) |
| 21502 Cresaptown (301/240/227) |
| 21502 Cumberland (301/240/227) |
| 21502 Lavale (301/240/227) |
| 21503 Cumberland (301/240/227) |
| 21504 Cumberland (301/240/227) |
| 21504 Lavale (301/240/227) |
| 21505 Cresaptown (301/240/227) |
| 21505 Cumberland (301/240/227) |
| 21520 Accident (301/240/227) |
| 21521 Barton (301/240/227) |
| 21522 Bittinger (301/240/227) |
| 21523 Bloomington (301/240/227) |
| 21524 Corriganville (301/240/227) |
| 21528 Eckhart Mines (301/240/227) |
| 21529 Ellerslie (301/240/227) |
| 21530 Flintstone (301/240/227) |
| 21531 Friendsville (301/240/227) |
| 21532 Frostburg (301/240/227) |
| 21536 Grantsville (301/240/227) |
| 21536 Jennings (301/240/227) |
| 21538 Kitzmiller (301/240/227) |
| 21538 Shallmar (301/240/227) |
| 21539 Lonaconing (301/240/227) |
| 21540 Luke (301/240/227) |
| 21540 Westernport (301/240/227) |
| 21541 Mc Henry (301/240/227) |
| 21541 McHenry (301/240/227) |
| 21541 Sang Run (301/240/227) |
| 21542 Midland (301/240/227) |
| 21543 Midlothian (301/240/227) |
| 21545 Mount Savage (301/240/227) |
| 21550 Crellin (301/240/227) |
| 21550 Deer Park (301/240/227) |
| 21550 Hutton (301/240/227) |
| 21550 Mnt Lake Park (301/240/227) |
| 21550 Mount Lake Park (301/240/227) |
| 21550 Mountain Lake Park (301/240/227) |
| 21550 Mtin Lk Park (301/240/227) |
| 21550 Oakland (301/240/227) |
| 21555 Oldtown (301/240/227) |
| 21556 Pinto (301/240/227) |
| 21557 Rawlings (301/240/227) |
| 21560 Spring Gap (301/240/227) |
| 21561 Swanton (301/240/227) |
| 21562 McCoole (301/240/227) |
| 21562 Westernport (301/240/227) |
| 21601 Easton (410/443/667) |
| 21607 Barclay (410/443/667) |
| 21609 Bethlehem (410/443/667) |
| 21610 Betterton (410/443/667) |
| 21612 Bozman (410/443/667) |
| 21613 Cambridge (410/443/667) |
| 21617 Centreville (410/443/667) |
| 21619 Chester (410/443/667) |
| 21620 Chestertown (410/443/667) |
| 21622 Church Creek (410/443/667) |
| 21623 Church Hill (410/443/667) |
| 21624 Claiborne (410/443/667) |
| 21624 Saint Michaels (410/443/667) |
| 21625 Cordova (410/443/667) |
| 21626 Crapo (410/443/667) |
| 21627 Crocheron (410/443/667) |
| 21628 Crumpton (410/443/667) |
| 21629 Denton (410/443/667) |
| 21631 East New Market (410/443/667) |
| 21632 Federalsburg (410/443/667) |
| 21634 Fishing Creek (410/443/667) |
| 21634 Hoopersville (410/443/667) |
| 21635 Galena (410/443/667) |
| 21635 Golts (410/443/667) |
| 21636 Goldsboro (410/443/667) |
| 21638 Grasonville (410/443/667) |
| 21639 Greensboro (410/443/667) |
| 21640 Henderson (410/443/667) |
| 21641 Hillsboro (410/443/667) |
| 21643 Hurlock (410/443/667) |
| 21644 Ingleside (410/443/667) |
| 21645 Kennedyville (410/443/667) |
| 21647 McDaniel (410/443/667) |
| 21647 Saint Michaels (410/443/667) |
| 21648 Madison (410/443/667) |
| 21648 Woolford (410/443/667) |
| 21649 Marydel (410/443/667) |
| 21650 Massey (410/443/667) |
| 21651 Millington (410/443/667) |
| 21652 Neavitt (410/443/667) |
| 21653 Newcomb (410/443/667) |
| 21654 Oxford (410/443/667) |
| 21655 Preston (410/443/667) |
| 21656 Church Hill (410/443/667) |
| 21656 Price (410/443/667) |
| 21657 Queen Anne (410/443/667) |
| 21658 Queenstown (410/443/667) |
| 21659 Rhodesdale (410/443/667) |
| 21660 Ridgely (410/443/667) |
| 21661 Rock Hall (410/443/667) |
| 21662 Royal Oak (410/443/667) |
| 21663 Saint Michaels (410/443/667) |
| 21664 Secretary (410/443/667) |
| 21665 Sherwood (410/443/667) |
| 21666 Stevensville (410/443/667) |
| 21667 Still Pond (410/443/667) |
| 21668 Sudlersville (410/443/667) |
| 21669 Taylors Island (410/443/667) |
| 21670 Templeville (410/443/667) |
| 21671 Tilghman (410/443/667) |
| 21672 Toddville (410/443/667) |
| 21673 Trappe (410/443/667) |
| 21675 Wingate (410/443/667) |
| 21676 Wittman (410/443/667) |
| 21677 Madison (410/443/667) |
| 21677 Woolford (410/443/667) |
| 21678 Lynch (410/443/667) |
| 21678 Worton (410/443/667) |
| 21679 Wye Mills (410/443/667) |
| 21690 Chestertown (410/443/667) |
| 21690 Usa Fulfillment (410/443/667) |
| 21701 Frederick (301/240/227) |
| 21701 Hood College (301/240/227) |
| 21701 Lewistown (301/240/227) |
| 21702 College Estates (301/240/227) |
| 21702 Fort Detrick (301/240/227) |
| 21702 Frederick (301/240/227) |
| 21703 Frederick (301/240/227) |
| 21704 Frederick (301/240/227) |
| 21704 Urbana (301/240/227) |
| 21705 Frederick (301/240/227) |
| 21709 Frederick (301/240/227) |
| 21709 State Farm Ins Co (301/240/227) |
| 21710 Adamstown (301/240/227) |
| 21710 Doubs (301/240/227) |
| 21711 Big Pool (301/240/227) |
| 21713 Boonsboro (301/240/227) |
| 21714 Braddock Heights (301/240/227) |
| 21715 Brownsville (301/240/227) |
| 21716 Brunswick (301/240/227) |
| 21716 Knoxville (301/240/227) |
| 21717 Buckeystown (301/240/227) |
| 21718 Burkittsville (301/240/227) |
| 21719 Cascade (301/240/227) |
| 21719 Fort Ritchie (301/240/227) |
| 21719 Highfield (301/240/227) |
| 21720 Cavetown (301/240/227) |
| 21721 Chewsville (301/240/227) |
| 21722 Big Spring (301/240/227) |
| 21722 Clear Spring (301/240/227) |
| 21723 Cooksville (410/443/667) |
| 21727 Emmitsburg (301/240/227) |
| 21733 Fairplay (301/240/227) |
| 21734 Funkstown (301/240/227) |
| 21737 Glenelg (410/443/667) |
| 21738 Glenwood (410/443/667) |
| 21740 Hagerstown (301/240/227) |
| 21741 Hagerstown (301/240/227) |
| 21742 Hagerstown (301/240/227) |
| 21742 Northern (301/240/227) |
| 21746 Hagerstown (301/240/227) |
| 21746 Maryland Correctional System (301/240/227) |
| 21747 Citicorp (301/240/227) |
| 21747 Hagerstown (301/240/227) |
| 21748 Citicorp (301/240/227) |
| 21748 Hagerstown (301/240/227) |
| 21749 Citicorp (BRM) (301/240/227) |
| 21749 Hagerstown (301/240/227) |
| 21750 Hancock (301/240/227) |
| 21754 Ijamsville (301/240/227) |
| 21755 Jefferson (301/240/227) |
| 21756 Keedysville (301/240/227) |
| 21757 Detour (410/443/667) |
| 21757 Keymar (410/443/667) |
| 21757 Middleburg (410/443/667) |
| 21758 Brunswick (301/240/227) |
| 21758 Knoxville (301/240/227) |
| 21759 Ladiesburg (301/240/227) |
| 21762 Libertytown (301/240/227) |
| 21765 Lisbon (410/443/667) |
| 21766 Little Orleans (301/240/227) |
| 21767 Maugansville (301/240/227) |
| 21769 Middletown (301/240/227) |
| 21770 Monrovia (301/240/227) |
| 21771 Mount Airy (301/240/227) |
| 21773 Myersville (301/240/227) |
| 21774 Lake Linganore (301/240/227) |
| 21774 New Market (301/240/227) |
| 21775 New Midway (301/240/227) |
| 21776 New Windsor (410/443/667) |
| 21777 Point of Rocks (301/240/227) |
| 21778 Rocky Ridge (301/240/227) |
| 21779 Gapland (301/240/227) |
| 21779 Rohrersville (301/240/227) |
| 21780 Sabillasville (301/240/227) |
| 21781 Saint James (301/240/227) |
| 21782 Sharpsburg (301/240/227) |
| 21783 Smithsburg (301/240/227) |
| 21784 Eldersburg (410/443/667) |
| 21784 Gaither (410/443/667) |
| 21784 Sykesville (410/443/667) |
| 21787 Taneytown (410/443/667) |
| 21788 Graceham (301/240/227) |
| 21788 Thurmont (301/240/227) |
| 21790 Tuscarora (301/240/227) |
| 21791 Linwood (410/443/667) |
| 21791 Union Bridge (410/443/667) |
| 21792 Unionville (301/240/227) |
| 21793 Walkersville (301/240/227) |
| 21794 West Friendship (410/443/667) |
| 21795 Williamsport (301/240/227) |
| 21797 Woodbine (410/443/667) |
| 21798 Woodsboro (301/240/227) |
| 21801 Salisbury (410/443/667) |
| 21802 Salisbury (410/443/667) |
| 21803 Salisbury (410/443/667) |
| 21804 Salisbury (410/443/667) |
| 21810 Allen (410/443/667) |
| 21811 Berlin (410/443/667) |
| 21811 Ocean Pines (410/443/667) |
| 21811 Ocean Pnes (410/443/667) |
| 21813 Bishop (410/443/667) |
| 21813 Bishopville (410/443/667) |
| 21814 Bivalve (410/443/667) |
| 21817 Crisfield (410/443/667) |
| 21821 Chance (410/443/667) |
| 21821 Dames Quarter (410/443/667) |
| 21821 Deal Island (410/443/667) |
| 21821 Wenona (410/443/667) |
| 21822 Eden (410/443/667) |
| 21824 Ewell (410/443/667) |
| 21824 Rhodes Point (410/443/667) |
| 21826 Fruitland (410/443/667) |
| 21829 Girdletree (410/443/667) |
| 21830 Hebron (410/443/667) |
| 21835 Linkwood (410/443/667) |
| 21836 Manokin (410/443/667) |
| 21837 Mardela (410/443/667) |
| 21837 Mardela Springs (410/443/667) |
| 21838 Marion (410/443/667) |
| 21838 Marion Station (410/443/667) |
| 21840 Nanticoke (410/443/667) |
| 21841 Newark (410/443/667) |
| 21842 North Ocean City (410/443/667) |
| 21842 Ocean City (410/443/667) |
| 21842 West Ocean City (410/443/667) |
| 21843 Ocean City (410/443/667) |
| 21849 Parsonsburg (410/443/667) |
| 21850 Pittsville (410/443/667) |
| 21851 Pocomoke (410/443/667) |
| 21851 Pocomoke City (410/443/667) |
| 21852 Pittsville (410/443/667) |
| 21852 Powellville (410/443/667) |
| 21853 Oriole (410/443/667) |
| 21853 Princess Anne (410/443/667) |
| 21856 Quantico (410/443/667) |
| 21856 Whitehaven (410/443/667) |
| 21857 Rehobeth (410/443/667) |
| 21861 Sharptown (410/443/667) |
| 21862 Showell (410/443/667) |
| 21863 Snow Hill (410/443/667) |
| 21864 Stockton (410/443/667) |
| 21865 Tyaskin (410/443/667) |
| 21866 Tylerton (410/443/667) |
| 21867 Fairmount (410/443/667) |
| 21867 Upper Fairmount (410/443/667) |
| 21867 Upper Fairmt (410/443/667) |
| 21867 Upper Hill (410/443/667) |
| 21869 Elliott (410/443/667) |
| 21869 Salem (410/443/667) |
| 21869 Vienna (410/443/667) |
| 21871 Easton Correctional Inst (410/443/667) |
| 21871 Kingston (410/443/667) |
| 21871 Rumbley (410/443/667) |
| 21871 Westover (410/443/667) |
| 21872 Whaleyville (410/443/667) |
| 21874 Willards (410/443/667) |
| 21875 Delmar (410/443/667) |
| 21890 Eastern Correctional Inst (410/443/667) |
| 21890 Easton Correctional Inst (410/443/667) |
| 21890 Westover (410/443/667) |
| 21901 North East (410/443/667) |
| 21901 Northeast (410/443/667) |
| 21902 Perry Point (410/443/667) |
| 21903 Perryville (410/443/667) |
| 21904 Bainbridge (410/443/667) |
| 21904 Port Deposit (410/443/667) |
| 21911 Rising Sun (410/443/667) |
| 21912 Warwick (410/443/667) |
| 21913 Cecilton (410/443/667) |
| 21914 Charlestown (410/443/667) |
| 21915 Chesapeake City (410/443/667) |
| 21915 Chesapeake Cy (410/443/667) |
| 21916 Childs (410/443/667) |
| 21917 Colora (410/443/667) |
| 21918 Conowingo (410/443/667) |
| 21919 Earleville (410/443/667) |
| 21920 Elk Mills (410/443/667) |
| 21921 Elkton (410/443/667) |
| 21922 Elkton (410/443/667) |
| 21930 Georgetown (410/443/667) |