Maryland ZIP codes
605 ZIP codes. PO-box-only and unique ZIPs are marked.
| ZIP | City | County |
|---|---|---|
| 20588 · PO box/unique | Dhs | Howard County |
| 20601 | Waldorf | Charles County |
| 20602 | Waldorf | Charles County |
| 20603 | Waldorf | Charles County |
| 20604 · PO box/unique | Waldorf | Charles County |
| 20606 | Abell | St. Mary's County |
| 20607 | Accokeek | Prince George's County |
| 20608 | Aquasco | Prince George's County |
| 20609 | Avenue | St. Mary's County |
| 20610 · PO box/unique | Barstow | Calvert County |
| 20611 | Bel Alton | Charles County |
| 20612 | Benedict | Charles County |
| 20613 | Brandywine | Prince George's County |
| 20615 | Broomes Island | Calvert County |
| 20616 | Bryans Road | Charles County |
| 20617 | Bryantown | Charles County |
| 20618 | Bushwood | St. Mary's County |
| 20619 | California | St. Mary's County |
| 20620 | Callaway | St. Mary's County |
| 20621 | Chaptico | St. Mary's County |
| 20622 | Charlotte Hall | Charles County |
| 20623 | Cheltenham | Prince George's County |
| 20624 | Clements | St. Mary's County |
| 20625 | Cobb Island | Charles County |
| 20626 | Coltons Point | St. Mary's County |
| 20627 · PO box/unique | Compton | St. Mary's County |
| 20628 | Dameron | St. Mary's County |
| 20629 | Dowell | Calvert County |
| 20630 | Drayden | St. Mary's County |
| 20632 | Faulkner | Charles County |
| 20634 | Great Mills | St. Mary's County |
| 20635 · PO box/unique | Helen | St. Mary's County |
| 20636 | Hollywood | St. Mary's County |
| 20637 | Hughesville | Charles County |
| 20639 | Huntingtown | Calvert County |
| 20640 | Indian Head | Charles County |
| 20643 · PO box/unique | Ironsides | Charles County |
| 20645 | Issue | Charles County |
| 20646 | La Plata | Charles County |
| 20650 | Leonardtown | St. Mary's County |
| 20653 | Lexington Park | St. Mary's County |
| 20656 | Loveville | St. Mary's County |
| 20657 | Lusby | Calvert County |
| 20658 | Marbury | Charles County |
| 20659 | Mechanicsville | St. Mary's County |
| 20660 | Morganza | St. Mary's County |
| 20661 | Mount Victoria | Charles County |
| 20662 | Nanjemoy | Charles County |
| 20664 | Newburg | Charles County |
| 20667 | Park Hall | St. Mary's County |
| 20670 | Patuxent River | St. Mary's County |
| 20674 | Piney Point | St. Mary's County |
| 20675 | Pomfret | Charles County |
| 20676 | Port Republic | Calvert County |
| 20677 | Port Tobacco | Charles County |
| 20678 | Prince Frederick | Calvert County |
| 20680 | Ridge | St. Mary's County |
| 20682 · PO box/unique | Rock Point | Charles County |
| 20684 | Saint Inigoes | St. Mary's County |
| 20685 | Saint Leonard | Calvert County |
| 20686 | Saint Marys City | St. Mary's County |
| 20687 | Scotland | St. Mary's County |
| 20688 | Solomons | Calvert County |
| 20689 | Sunderland | Calvert County |
| 20690 | Tall Timbers | St. Mary's County |
| 20692 | Valley Lee | St. Mary's County |
| 20693 | Welcome | Charles County |
| 20695 | White Plains | Charles County |
| 20697 · PO box/unique | Southern Md Facility | Prince George's County |
| 20701 | Annapolis Junction | Howard County |
| 20703 · PO box/unique | Lanham | Prince George's County |
| 20704 · PO box/unique | Beltsville | Prince George's County |
| 20705 | Beltsville | Prince George's County |
| 20706 | Lanham | Prince George's County |
| 20707 | Laurel | Prince George's County |
| 20708 | Laurel | Prince George's County |
| 20709 · PO box/unique | Laurel | Prince George's County |
| 20710 | Bladensburg | Prince George's County |
| 20711 | Lothian | Anne Arundel County |
| 20712 | Mount Rainier | Prince George's County |
| 20714 | North Beach | Anne Arundel County |
| 20715 | Bowie | Prince George's County |
| 20716 | Bowie | Prince George's County |
| 20717 · PO box/unique | Bowie | Prince George's County |
| 20718 · PO box/unique | Bowie | Prince George's County |
| 20719 · PO box/unique | Bowie | Prince George's County |
| 20720 | Bowie | Prince George's County |
| 20721 | Bowie | Prince George's County |
| 20722 | Brentwood | Prince George's County |
| 20723 | Laurel | Howard County |
| 20724 | Laurel | Anne Arundel County |
| 20725 · PO box/unique | Laurel | Prince George's County |
| 20726 · PO box/unique | Laurel | Prince George's County |
| 20731 · PO box/unique | Capitol Heights | Prince George's County |
| 20732 | Chesapeake Beach | Calvert County |
| 20733 | Churchton | Anne Arundel County |
| 20735 | Clinton | Prince George's County |
| 20736 | Owings | Calvert County |
| 20737 | Riverdale | Prince George's County |
| 20738 · PO box/unique | Riverdale | Prince George's County |
| 20740 | College Park | Prince George's County |
| 20741 · PO box/unique | College Park | Prince George's County |
| 20742 | College Park | Prince George's County |
| 20743 | Capitol Heights | Prince George's County |
| 20744 | Fort Washington | Prince George's County |
| 20745 | Oxon Hill | Prince George's County |
| 20746 | Suitland | Prince George's County |
| 20747 | District Heights | Prince George's County |
| 20748 | Temple Hills | Prince George's County |
| 20749 · PO box/unique | Fort Washington | Prince George's County |
| 20750 · PO box/unique | Oxon Hill | Prince George's County |
| 20751 | Deale | Anne Arundel County |
| 20752 · PO box/unique | Suitland | Prince George's County |
| 20753 · PO box/unique | District Heights | Prince George's County |
| 20754 | Dunkirk | Calvert County |
| 20755 | Fort George G Meade | Anne Arundel County |
| 20757 · PO box/unique | Temple Hills | Prince George's County |
| 20758 | Friendship | Anne Arundel County |
| 20759 | Fulton | Howard County |
| 20762 | Andrews Air Force Base | Prince George's County |
| 20763 | Savage | Howard County |
| 20764 | Shady Side | Anne Arundel County |
| 20765 | Galesville | Anne Arundel County |
| 20768 · PO box/unique | Greenbelt | Prince George's County |
| 20769 | Glenn Dale | Prince George's County |
| 20770 | Greenbelt | Prince George's County |
| 20771 | Greenbelt | Prince George's County |
| 20772 | Upper Marlboro | Prince George's County |
| 20773 · PO box/unique | Upper Marlboro | Prince George's County |
| 20774 | Upper Marlboro | Prince George's County |
| 20775 · PO box/unique | Upper Marlboro | Prince George's County |
| 20776 | Harwood | Anne Arundel County |
| 20777 | Highland | Howard County |
| 20778 | West River | Anne Arundel County |
| 20779 | Tracys Landing | Anne Arundel County |
| 20781 | Hyattsville | Prince George's County |
| 20782 | Hyattsville | Prince George's County |
| 20783 | Hyattsville | Prince George's County |
| 20784 | Hyattsville | Prince George's County |
| 20785 | Hyattsville | Prince George's County |
| 20787 · PO box/unique | Hyattsville | Prince George's County |
| 20788 · PO box/unique | Hyattsville | Prince George's County |
| 20790 · PO box/unique | Capitol Heights | Prince George's County |
| 20791 · PO box/unique | Capitol Heights | Prince George's County |
| 20792 · PO box/unique | Upper Marlboro | Prince George's County |
| 20794 | Jessup | Howard County |
| 20797 · PO box/unique | Southern Md Facility | Prince George's County |
| 20799 · PO box/unique | Capitol Heights | Prince George's County |
| 20810 · PO box/unique | Bethesda | Montgomery County |
| 20811 · PO box/unique | Bethesda | Montgomery County |
| 20812 | Glen Echo | Montgomery County |
| 20813 · PO box/unique | Bethesda | Montgomery County |
| 20814 | Bethesda | Montgomery County |
| 20815 | Chevy Chase | Montgomery County |
| 20816 | Bethesda | Montgomery County |
| 20817 | Bethesda | Montgomery County |
| 20818 | Cabin John | Montgomery County |
| 20824 · PO box/unique | Bethesda | Montgomery County |
| 20825 · PO box/unique | Chevy Chase | Montgomery County |
| 20827 · PO box/unique | Bethesda | Montgomery County |
| 20830 · PO box/unique | Olney | Montgomery County |
| 20832 | Olney | Montgomery County |
| 20833 | Brookeville | Montgomery County |
| 20837 | Poolesville | Montgomery County |
| 20838 | Barnesville | Montgomery County |
| 20839 | Beallsville | Montgomery County |
| 20841 | Boyds | Montgomery County |
| 20842 | Dickerson | Montgomery County |
| 20847 · PO box/unique | Rockville | Montgomery County |
| 20848 · PO box/unique | Rockville | Montgomery County |
| 20849 · PO box/unique | Rockville | Montgomery County |
| 20850 | Rockville | Montgomery County |
| 20851 | Rockville | Montgomery County |
| 20852 | Rockville | Montgomery County |
| 20853 | Rockville | Montgomery County |
| 20854 | Potomac | Montgomery County |
| 20855 | Derwood | Montgomery County |
| 20857 · PO box/unique | Rockville | Montgomery County |
| 20859 · PO box/unique | Potomac | Montgomery County |
| 20860 | Sandy Spring | Montgomery County |
| 20861 | Ashton | Montgomery County |
| 20862 | Brinklow | Montgomery County |
| 20866 | Burtonsville | Montgomery County |
| 20868 | Spencerville | Montgomery County |
| 20871 | Clarksburg | Montgomery County |
| 20872 | Damascus | Montgomery County |
| 20874 | Germantown | Montgomery County |
| 20875 · PO box/unique | Germantown | Montgomery County |
| 20876 | Germantown | Montgomery County |
| 20877 | Gaithersburg | Montgomery County |
| 20878 | Gaithersburg | Montgomery County |
| 20879 | Gaithersburg | Montgomery County |
| 20880 | Washington Grove | Montgomery County |
| 20882 | Gaithersburg | Montgomery County |
| 20883 · PO box/unique | Gaithersburg | Montgomery County |
| 20884 · PO box/unique | Gaithersburg | Montgomery County |
| 20885 · PO box/unique | Gaithersburg | Montgomery County |
| 20886 | Montgomery Village | Montgomery County |
| 20889 | Bethesda | Montgomery County |
| 20891 · PO box/unique | Kensington | Montgomery County |
| 20892 | Bethesda | Montgomery County |
| 20894 | Bethesda | Montgomery County |
| 20895 | Kensington | Montgomery County |
| 20896 | Garrett Park | Montgomery County |
| 20897 · PO box/unique | Suburb Maryland Fac | Montgomery County |
| 20898 · PO box/unique | Gaithersburg | Montgomery County |
| 20899 | Gaithersburg | Montgomery County |
| 20901 | Silver Spring | Montgomery County |
| 20902 | Silver Spring | Montgomery County |
| 20903 | Silver Spring | Montgomery County |
| 20904 | Silver Spring | Montgomery County |
| 20905 | Silver Spring | Montgomery County |
| 20906 | Silver Spring | Montgomery County |
| 20907 · PO box/unique | Silver Spring | Montgomery County |
| 20908 · PO box/unique | Silver Spring | Montgomery County |
| 20910 | Silver Spring | Montgomery County |
| 20911 · PO box/unique | Silver Spring | Montgomery County |
| 20912 | Takoma Park | Montgomery County |
| 20913 · PO box/unique | Takoma Park | Prince George's County |
| 20914 · PO box/unique | Silver Spring | Montgomery County |
| 20915 · PO box/unique | Silver Spring | Montgomery County |
| 20916 · PO box/unique | Silver Spring | Montgomery County |
| 20918 · PO box/unique | Silver Spring | Montgomery County |
| 20993 · PO box/unique | Silver Spring | Montgomery County |
| 20997 · PO box/unique | Silver Spring | Montgomery County |
| 21001 | Aberdeen | Harford County |
| 21005 | Aberdeen Proving Ground | Harford County |
| 21009 | Abingdon | Harford County |
| 21010 | Gunpowder | Harford County |
| 21012 | Arnold | Anne Arundel County |
| 21013 | Baldwin | Baltimore County |
| 21014 | Bel Air | Harford County |
| 21015 | Bel Air | Harford County |
| 21017 | Belcamp | Harford County |
| 21018 · PO box/unique | Benson | Harford County |
| 21020 · PO box/unique | Boring | Baltimore County |
| 21022 · PO box/unique | Brooklandville | Baltimore County |
| 21023 | Butler | Baltimore County |
| 21027 · PO box/unique | Chase | Baltimore County |
| 21028 | Churchville | Harford County |
| 21029 | Clarksville | Howard County |
| 21030 | Cockeysville | Baltimore County |
| 21031 | Hunt Valley | Baltimore County |
| 21032 | Crownsville | Anne Arundel County |
| 21034 | Darlington | Harford County |
| 21035 | Davidsonville | Anne Arundel County |
| 21036 | Dayton | Howard County |
| 21037 | Edgewater | Anne Arundel County |
| 21040 | Edgewood | Harford County |
| 21041 · PO box/unique | Ellicott City | Howard County |
| 21042 | Ellicott City | Howard County |
| 21043 | Ellicott City | Howard County |
| 21044 | Columbia | Howard County |
| 21045 | Columbia | Howard County |
| 21046 | Columbia | Howard County |
| 21047 | Fallston | Harford County |
| 21048 | Finksburg | Carroll County |
| 21050 | Forest Hill | Harford County |
| 21051 | Fork | Baltimore County |
| 21052 | Fort Howard | Baltimore County |
| 21053 | Freeland | Baltimore County |
| 21054 | Gambrills | Anne Arundel County |
| 21056 | Gibson Island | Anne Arundel County |
| 21057 | Glen Arm | Baltimore County |
| 21060 | Glen Burnie | Anne Arundel County |
| 21061 | Glen Burnie | Anne Arundel County |
| 21062 · PO box/unique | Glen Burnie | Anne Arundel County |
| 21065 · PO box/unique | Hunt Valley | Baltimore County |
| 21071 | Glyndon | Baltimore County |
| 21074 | Hampstead | Carroll County |
| 21075 | Elkridge | Howard County |
| 21076 | Hanover | Anne Arundel County |
| 21077 | Harmans | Anne Arundel County |
| 21078 | Havre De Grace | Harford County |
| 21082 | Hydes | Baltimore County |
| 21084 | Jarrettsville | Harford County |
| 21085 | Joppa | Harford County |
| 21087 | Kingsville | Baltimore County |
| 21088 · PO box/unique | Lineboro | Carroll County |
| 21090 | Linthicum Heights | Anne Arundel County |
| 21092 · PO box/unique | Long Green | Baltimore County |
| 21093 | Lutherville Timonium | Baltimore County |
| 21094 · PO box/unique | Lutherville Timonium | Baltimore County |
| 21102 | Manchester | Carroll County |
| 21104 | Marriottsville | Howard County |
| 21105 | Maryland Line | Baltimore County |
| 21106 · PO box/unique | Mayo | Anne Arundel County |
| 21108 | Millersville | Anne Arundel County |
| 21111 | Monkton | Baltimore County |
| 21113 | Odenton | Anne Arundel County |
| 21114 | Crofton | Anne Arundel County |
| 21117 | Owings Mills | Baltimore County |
| 21120 | Parkton | Baltimore County |
| 21122 | Pasadena | Anne Arundel County |
| 21123 · PO box/unique | Pasadena | Anne Arundel County |
| 21128 | Perry Hall | Baltimore County |
| 21130 | Perryman | Harford County |
| 21131 | Phoenix | Baltimore County |
| 21132 | Pylesville | Harford County |
| 21133 | Randallstown | Baltimore County |
| 21136 | Reisterstown | Baltimore County |
| 21139 · PO box/unique | Riderwood | Baltimore County |
| 21140 | Riva | Anne Arundel County |
| 21144 | Severn | Anne Arundel County |
| 21146 | Severna Park | Anne Arundel County |
| 21150 · PO box/unique | Simpsonville | Howard County |
| 21152 | Sparks Glencoe | Baltimore County |
| 21153 | Stevenson | Baltimore County |
| 21154 | Street | Harford County |
| 21155 | Upperco | Baltimore County |
| 21156 | Upper Falls | Baltimore County |
| 21157 | Westminster | Carroll County |
| 21158 | Westminster | Carroll County |
| 21160 | Whiteford | Harford County |
| 21161 | White Hall | Harford County |
| 21162 | White Marsh | Baltimore County |
| 21163 | Woodstock | Baltimore County |
| 21201 | Baltimore | Baltimore city |
| 21202 | Baltimore | Baltimore city |
| 21203 · PO box/unique | Baltimore | Baltimore city |
| 21204 | Towson | Baltimore County |
| 21205 | Baltimore | Baltimore city |
| 21206 | Baltimore | Baltimore city |
| 21207 | Gwynn Oak | Baltimore County |
| 21208 | Pikesville | Baltimore County |
| 21209 | Baltimore | Baltimore County |
| 21210 | Baltimore | Baltimore city |
| 21211 | Baltimore | Baltimore city |
| 21212 | Baltimore | Baltimore city |
| 21213 | Baltimore | Baltimore city |
| 21214 | Baltimore | Baltimore city |
| 21215 | Baltimore | Baltimore city |
| 21216 | Baltimore | Baltimore city |
| 21217 | Baltimore | Baltimore city |
| 21218 | Baltimore | Baltimore city |
| 21219 | Sparrows Point | Baltimore County |
| 21220 | Middle River | Baltimore County |
| 21221 | Essex | Baltimore County |
| 21222 | Dundalk | Baltimore County |
| 21223 | Baltimore | Baltimore city |
| 21224 | Baltimore | Baltimore city |
| 21225 | Brooklyn | Anne Arundel County |
| 21226 | Curtis Bay | Baltimore city |
| 21227 | Halethorpe | Baltimore County |
| 21228 | Catonsville | Baltimore County |
| 21229 | Baltimore | Baltimore city |
| 21230 | Baltimore | Baltimore city |
| 21231 | Baltimore | Baltimore city |
| 21233 | Baltimore | Baltimore city |
| 21234 | Parkville | Baltimore County |
| 21235 · PO box/unique | Baltimore | Baltimore city |
| 21236 | Nottingham | Baltimore County |
| 21237 | Rosedale | Baltimore County |
| 21239 | Baltimore | Baltimore city |
| 21240 | Baltimore | Anne Arundel County |
| 21241 · PO box/unique | Baltimore | Baltimore city |
| 21244 | Windsor Mill | Baltimore County |
| 21250 | Baltimore | Baltimore County |
| 21251 | Baltimore | Baltimore city |
| 21252 | Towson | Baltimore County |
| 21263 · PO box/unique | Baltimore | Baltimore city |
| 21264 · PO box/unique | Baltimore | Baltimore city |
| 21270 · PO box/unique | Baltimore | Baltimore city |
| 21273 · PO box/unique | Baltimore | Baltimore city |
| 21275 · PO box/unique | Baltimore | Baltimore city |
| 21278 · PO box/unique | Baltimore | Baltimore city |
| 21279 · PO box/unique | Baltimore | Baltimore city |
| 21280 · PO box/unique | Baltimore | Baltimore city |
| 21281 · PO box/unique | Baltimore | Baltimore city |
| 21282 · PO box/unique | Pikesville | Baltimore County |
| 21284 · PO box/unique | Towson | Baltimore County |
| 21285 | Towson | Baltimore County |
| 21286 | Towson | Baltimore County |
| 21287 | Baltimore | Baltimore city |
| 21288 · PO box/unique | Baltimore | Baltimore city |
| 21289 · PO box/unique | Baltimore | Baltimore city |
| 21290 · PO box/unique | Baltimore | Baltimore city |
| 21297 · PO box/unique | Baltimore | Baltimore city |
| 21298 · PO box/unique | Baltimore | Baltimore city |
| 21401 | Annapolis | Anne Arundel County |
| 21402 | Annapolis | Anne Arundel County |
| 21403 | Annapolis | Anne Arundel County |
| 21404 · PO box/unique | Annapolis | Anne Arundel County |
| 21405 | Annapolis | Anne Arundel County |
| 21409 | Annapolis | Anne Arundel County |
| 21411 · PO box/unique | Annapolis | Anne Arundel County |
| 21412 · PO box/unique | Annapolis | Anne Arundel County |
| 21501 · PO box/unique | Cumberland | Allegany County |
| 21502 | Cumberland | Allegany County |
| 21503 · PO box/unique | Cumberland | Allegany County |
| 21504 · PO box/unique | Cumberland | Allegany County |
| 21505 · PO box/unique | Cumberland | Allegany County |
| 21520 | Accident | Garrett County |
| 21521 | Barton | Garrett County |
| 21522 · PO box/unique | Bittinger | Garrett County |
| 21523 | Bloomington | Garrett County |
| 21524 | Corriganville | Allegany County |
| 21528 · PO box/unique | Eckhart Mines | Allegany County |
| 21529 | Ellerslie | Allegany County |
| 21530 | Flintstone | Allegany County |
| 21531 | Friendsville | Garrett County |
| 21532 | Frostburg | Allegany County |
| 21536 | Grantsville | Garrett County |
| 21538 | Kitzmiller | Garrett County |
| 21539 | Lonaconing | Garrett County |
| 21540 | Luke | Allegany County |
| 21541 | Mc Henry | Garrett County |
| 21542 | Midland | Allegany County |
| 21543 | Midlothian | Allegany County |
| 21545 | Mount Savage | Allegany County |
| 21550 | Oakland | Garrett County |
| 21555 | Oldtown | Allegany County |
| 21556 · PO box/unique | Pinto | Allegany County |
| 21557 | Rawlings | Allegany County |
| 21560 | Spring Gap | Allegany County |
| 21561 | Swanton | Garrett County |
| 21562 | Westernport | Garrett County |
| 21601 | Easton | Talbot County |
| 21607 | Barclay | Queen Anne's County |
| 21609 · PO box/unique | Bethlehem | Caroline County |
| 21610 | Betterton | Kent County |
| 21612 | Bozman | Talbot County |
| 21613 | Cambridge | Dorchester County |
| 21617 | Centreville | Queen Anne's County |
| 21619 | Chester | Queen Anne's County |
| 21620 | Chestertown | Kent County |
| 21622 | Church Creek | Dorchester County |
| 21623 | Church Hill | Queen Anne's County |
| 21624 | Claiborne | Talbot County |
| 21625 | Cordova | Talbot County |
| 21626 | Crapo | Dorchester County |
| 21627 | Crocheron | Dorchester County |
| 21628 | Crumpton | Queen Anne's County |
| 21629 | Denton | Caroline County |
| 21631 | East New Market | Dorchester County |
| 21632 | Federalsburg | Caroline County |
| 21634 | Fishing Creek | Dorchester County |
| 21635 | Galena | Kent County |
| 21636 | Goldsboro | Caroline County |
| 21638 | Grasonville | Queen Anne's County |
| 21639 | Greensboro | Caroline County |
| 21640 | Henderson | Caroline County |
| 21641 | Hillsboro | Caroline County |
| 21643 | Hurlock | Dorchester County |
| 21644 | Ingleside | Queen Anne's County |
| 21645 | Kennedyville | Kent County |
| 21647 | Mcdaniel | Talbot County |
| 21648 | Madison | Dorchester County |
| 21649 | Marydel | Queen Anne's County |
| 21650 | Massey | Kent County |
| 21651 | Millington | Kent County |
| 21652 | Neavitt | Talbot County |
| 21653 | Newcomb | Talbot County |
| 21654 | Oxford | Talbot County |
| 21655 | Preston | Caroline County |
| 21656 · PO box/unique | Price | Queen Anne's County |
| 21657 | Queen Anne | Queen Anne's County |
| 21658 | Queenstown | Queen Anne's County |
| 21659 | Rhodesdale | Dorchester County |
| 21660 | Ridgely | Caroline County |
| 21661 | Rock Hall | Kent County |
| 21662 | Royal Oak | Talbot County |
| 21663 | Saint Michaels | Talbot County |
| 21664 | Secretary | Dorchester County |
| 21665 | Sherwood | Talbot County |
| 21666 | Stevensville | Queen Anne's County |
| 21667 | Still Pond | Kent County |
| 21668 | Sudlersville | Queen Anne's County |
| 21669 | Taylors Island | Dorchester County |
| 21670 · PO box/unique | Templeville | Caroline County |
| 21671 | Tilghman | Talbot County |
| 21672 | Toddville | Dorchester County |
| 21673 | Trappe | Talbot County |
| 21675 | Wingate | Dorchester County |
| 21676 | Wittman | Talbot County |
| 21677 | Woolford | Dorchester County |
| 21678 | Worton | Kent County |
| 21679 | Wye Mills | Talbot County |
| 21690 · PO box/unique | Chestertown | Queen Anne's County |
| 21701 | Frederick | Frederick County |
| 21702 | Frederick | Frederick County |
| 21703 | Frederick | Frederick County |
| 21704 | Frederick | Frederick County |
| 21705 | Frederick | Frederick County |
| 21709 · PO box/unique | Frederick | Frederick County |
| 21710 | Adamstown | Frederick County |
| 21711 | Big Pool | Washington County |
| 21713 | Boonsboro | Washington County |
| 21714 | Braddock Heights | Frederick County |
| 21715 | Brownsville | Washington County |
| 21716 | Brunswick | Frederick County |
| 21717 | Buckeystown | Frederick County |
| 21718 | Burkittsville | Frederick County |
| 21719 | Cascade | Washington County |
| 21720 · PO box/unique | Cavetown | Washington County |
| 21721 · PO box/unique | Chewsville | Washington County |
| 21722 | Clear Spring | Washington County |
| 21723 | Cooksville | Howard County |
| 21727 | Emmitsburg | Frederick County |
| 21733 | Fairplay | Washington County |
| 21734 | Funkstown | Washington County |
| 21737 | Glenelg | Howard County |
| 21738 | Glenwood | Howard County |
| 21740 | Hagerstown | Washington County |
| 21741 · PO box/unique | Hagerstown | Washington County |
| 21742 | Hagerstown | Washington County |
| 21746 | Hagerstown | Washington County |
| 21747 · PO box/unique | Hagerstown | Washington County |
| 21749 · PO box/unique | Hagerstown | Washington County |
| 21750 | Hancock | Washington County |
| 21754 | Ijamsville | Frederick County |
| 21755 | Jefferson | Frederick County |
| 21756 | Keedysville | Washington County |
| 21757 | Keymar | Carroll County |
| 21758 | Knoxville | Frederick County |
| 21759 · PO box/unique | Ladiesburg | Frederick County |
| 21762 | Libertytown | Frederick County |
| 21765 · PO box/unique | Lisbon | Howard County |
| 21766 | Little Orleans | Allegany County |
| 21767 | Maugansville | Washington County |
| 21769 | Middletown | Frederick County |
| 21770 | Monrovia | Frederick County |
| 21771 | Mount Airy | Frederick County |
| 21773 | Myersville | Frederick County |
| 21774 | New Market | Frederick County |
| 21775 · PO box/unique | New Midway | Frederick County |
| 21776 | New Windsor | Carroll County |
| 21777 | Point Of Rocks | Frederick County |
| 21778 | Rocky Ridge | Frederick County |
| 21779 | Rohrersville | Washington County |
| 21780 | Sabillasville | Frederick County |
| 21781 | Saint James | Washington County |
| 21782 | Sharpsburg | Washington County |
| 21783 | Smithsburg | Washington County |
| 21784 | Sykesville | Carroll County |
| 21787 | Taneytown | Carroll County |
| 21788 | Thurmont | Frederick County |
| 21790 | Tuscarora | Frederick County |
| 21791 | Union Bridge | Frederick County |
| 21792 · PO box/unique | Unionville | Frederick County |
| 21793 | Walkersville | Frederick County |
| 21794 | West Friendship | Howard County |
| 21795 | Williamsport | Washington County |
| 21797 | Woodbine | Howard County |
| 21798 | Woodsboro | Frederick County |
| 21801 | Salisbury | Wicomico County |
| 21802 · PO box/unique | Salisbury | Wicomico County |
| 21803 · PO box/unique | Salisbury | Wicomico County |
| 21804 | Salisbury | Wicomico County |
| 21810 | Allen | Wicomico County |
| 21811 | Berlin | Worcester County |
| 21813 | Bishopville | Worcester County |
| 21814 | Bivalve | Wicomico County |
| 21817 | Crisfield | Somerset County |
| 21821 | Deal Island | Somerset County |
| 21822 | Eden | Wicomico County |
| 21824 | Ewell | Somerset County |
| 21826 | Fruitland | Wicomico County |
| 21829 | Girdletree | Worcester County |
| 21830 | Hebron | Wicomico County |
| 21835 | Linkwood | Dorchester County |
| 21836 · PO box/unique | Manokin | Somerset County |
| 21837 | Mardela Springs | Wicomico County |
| 21838 | Marion Station | Somerset County |
| 21840 | Nanticoke | Wicomico County |
| 21841 | Newark | Worcester County |
| 21842 | Ocean City | Worcester County |
| 21843 · PO box/unique | Ocean City | Worcester County |
| 21849 | Parsonsburg | Wicomico County |
| 21850 | Pittsville | Wicomico County |
| 21851 | Pocomoke City | Worcester County |
| 21852 · PO box/unique | Powellville | Wicomico County |
| 21853 | Princess Anne | Somerset County |
| 21856 | Quantico | Wicomico County |
| 21857 · PO box/unique | Rehobeth | Somerset County |
| 21861 | Sharptown | Wicomico County |
| 21862 | Showell | Worcester County |
| 21863 | Snow Hill | Worcester County |
| 21864 | Stockton | Worcester County |
| 21865 | Tyaskin | Wicomico County |
| 21866 | Tylerton | Somerset County |
| 21867 | Upper Fairmount | Somerset County |
| 21869 | Vienna | Dorchester County |
| 21871 | Westover | Somerset County |
| 21872 | Whaleyville | Worcester County |
| 21874 | Willards | Wicomico County |
| 21875 | Delmar | Wicomico County |
| 21890 | Westover | Somerset County |
| 21901 | North East | Cecil County |
| 21902 | Perry Point | Cecil County |
| 21903 | Perryville | Cecil County |
| 21904 | Port Deposit | Cecil County |
| 21911 | Rising Sun | Cecil County |
| 21912 | Warwick | Cecil County |
| 21913 | Cecilton | Cecil County |
| 21914 | Charlestown | Cecil County |
| 21915 | Chesapeake City | Cecil County |
| 21916 · PO box/unique | Childs | Cecil County |
| 21917 | Colora | Cecil County |
| 21918 | Conowingo | Cecil County |
| 21919 | Earleville | Cecil County |
| 21920 | Elk Mills | Cecil County |
| 21921 | Elkton | Cecil County |
| 21922 · PO box/unique | Elkton | Cecil County |
| 21930 | Georgetown | Cecil County |