What are ZIP codes or Postal Codes of Maryland?
Here is you list of all Maryland ZIP Code or Postal Codes a stat US. This list has Maryland (MD) area codes, Type Common Cities and County as well. You can find out more information about the Maryland ZIP code by clicking on the link. United States postal codes from USPS and other reliable sources.
| ZIP Code | Type | Common Cities | County | Area Codes |
|---|---|---|---|---|
| 20588 | Unique | Dhs, Cheltenham, Columbia | Howard County | 410 |
| 20601 | Standard | Waldorf | Charles County | 240,301 |
| 20602 | Standard | Waldorf, Saint Charles | Charles County | 240,301 |
| 20603 | Standard | Waldorf, Saint Charles | Charles County | 240,301 |
| 20604 | PO Box | Waldorf, Saint Charles | Charles County | 240 |
| 20610 | PO Box | Barstow | Calvert County | 410 |
| 20611 | Standard | Bel Alton | Charles County | 240,301 |
| 20612 | PO Box | Benedict | Charles County | 240 |
| 20615 | Standard | Broomes Island, Broomes Is | Calvert County | 410 |
| 20616 | Standard | Bryans Road | Charles County | 301 |
| 20617 | Standard | Bryantown | Charles County | 240 |
| 20622 | Standard | Charlotte Hall, Charlott Hall | Charles County | 240 |
| 20625 | PO Box | Cobb Island | Charles County | 240 |
| 20629 | PO Box | Dowell | Calvert County | 410 |
| 20632 | Standard | Faulkner | Charles County | 240 |
| 20637 | Standard | Hughesville | Charles County | 240,301 |
| 20639 | Standard | Huntingtown | Calvert County | 410,443 |
| 20640 | Standard | Indian Head, Pisgah | Charles County | 240,301 |
| 20643 | PO Box | Ironsides | Charles County | 240 |
| 20645 | Standard | Issue, Swan Point | Charles County | 240,301 |
| 20646 | Standard | La Plata, Dentsville | Charles County | 240,301 |
| 20657 | Standard | Lusby | Calvert County | 410 |
| 20658 | Standard | Marbury, Rison | Charles County | 240 |
| 20661 | PO Box | Mount Victoria, Mt Victoria | Charles County | 240 |
| 20662 | Standard | Nanjemoy | Charles County | 240,301 |
| 20664 | Standard | Newburg | Charles County | 301,240 |
| 20675 | Standard | Pomfret | Charles County | 301 |
| 20676 | Standard | Port Republic | Calvert County | 443,410 |
| 20677 | Standard | Port Tobacco | Charles County | 240,301 |
| 20678 | Standard | Prince Frederick, Dares Beach, Prnc Frederck | Calvert County | 410,443 |
| 20682 | PO Box | Rock Point | Charles County | 240 |
| 20685 | Standard | Saint Leonard | Calvert County | 410 |
| 20688 | Standard | Solomons | Calvert County | 410,443,667 |
| 20689 | Standard | Sunderland | Calvert County | 410 |
| 20693 | Standard | Welcome | Charles County | 240 |
| 20695 | Standard | White Plains | Charles County | 301 |
| 20701 | Standard | Annapolis Junction, Annapolis Jct | Howard County | 410,443 |
| 20711 | Standard | Lothian | Anne Arundel County | 240,301 |
| 20714 | Standard | North Beach, Holland Point, Rose Haven | Calvert County | 301,410,443 |
| 20723 | Standard | Laurel, Scaggsville | Howard County | 240,301,410,443 |
| 20724 | Standard | Laurel, Maryland City, Md City, Russett | Anne Arundel County | 240,301,410,443 |
| 20732 | Standard | Chesapeake Beach, Chesapeak Bch | Calvert County | 410 |
| 20733 | Standard | Churchton | Anne Arundel County | 410 |
| 20736 | Standard | Owings | Calvert County | 410 |
| 20751 | Standard | Deale | Anne Arundel County | 410 |
| 20754 | Standard | Dunkirk | Calvert County | - |
| 20755 | Standard | Fort George G Meade, Fort Meade | Anne Arundel County | 410 |
| 20758 | Standard | Friendship | Anne Arundel County | 410 |
| 20759 | Standard | Fulton | Howard County | 410 |
| 20763 | Standard | Savage | Howard County | 410,443 |
| 20764 | Standard | Shady Side | Anne Arundel County | 410 |
| 20765 | PO Box | Galesville | Anne Arundel County | 410 |
| 20776 | Standard | Harwood | Anne Arundel County | 410 |
| 20777 | Standard | Highland | Howard County | 240 |
| 20778 | Standard | West River | Anne Arundel County | 410,443 |
| 20779 | Standard | Tracys Landing, Tracys Lndg | Anne Arundel County | 410 |
| 20794 | Standard | Jessup | Howard County | 410,443 |
| 20810 | Unique | Bethesda | Montgomery County | 240 |
| 20811 | Unique | Bethesda | Montgomery County | 240 |
| 20812 | Standard | Glen Echo | Montgomery County | 240,301 |
| 20813 | PO Box | Bethesda | Montgomery County | 240 |
| 20814 | Standard | Bethesda | Montgomery County | 301,240 |
| 20815 | Standard | Chevy Chase, Bethesda, Chevy Chase Village, Chevy Chs... | Montgomery County | 240,301 |
| 20816 | Standard | Bethesda | Montgomery County | 301,240 |
| 20817 | Standard | Bethesda, Westlake | Montgomery County | 240,301 |
| 20818 | Standard | Cabin John | Montgomery County | 301,240 |
| 20824 | PO Box | Bethesda | Montgomery County | 240 |
| 20825 | PO Box | Chevy Chase, Bethesda | Montgomery County | 240 |
| 20827 | PO Box | Bethesda, W Bethesda, Westlake | Montgomery County | 240 |
| 20830 | PO Box | Olney | Montgomery County | 240 |
| 20832 | Standard | Olney | Montgomery County | 240 |
| 20833 | Standard | Brookeville | Montgomery County | - |
| 20837 | Standard | Poolesville | Montgomery County | 240,301 |
| 20838 | Standard | Barnesville | Montgomery County | 240 |
| 20839 | Standard | Beallsville | Montgomery County | 240 |
| 20841 | Standard | Boyds | Montgomery County | 240 |
| 20842 | Standard | Dickerson | Montgomery County | - |
| 20847 | PO Box | Rockville | Montgomery County | 240 |
| 20848 | PO Box | Rockville | Montgomery County | 240 |
| 20849 | PO Box | Rockville | Montgomery County | 240 |
| 20850 | Standard | Rockville | Montgomery County | 240,301 |
| 20851 | Standard | Rockville | Montgomery County | 240,301 |
| 20852 | Standard | Rockville, N Bethesda, North Bethesda | Montgomery County | 240,301 |
| 20853 | Standard | Rockville | Montgomery County | 240,301 |
| 20854 | Standard | Potomac, Rockville | Montgomery County | 301 |
| 20855 | Standard | Derwood, Rockville | Montgomery County | 240,301 |
| 20857 | Unique | Rockville | Montgomery County | 240 |
| 20859 | PO Box | Potomac, Rockville | Montgomery County | 240 |
| 20860 | Standard | Sandy Spring | Montgomery County | 240,301 |
| 20861 | Standard | Ashton | Montgomery County | 240,301 |
| 20862 | Standard | Brinklow | Montgomery County | 240,301 |
| 20866 | Standard | Burtonsville | Montgomery County | 301 |
| 20868 | Standard | Spencerville | Montgomery County | 301 |
| 20871 | Standard | Clarksburg, Hyattstown | Montgomery County | 301,240 |
| 20872 | Standard | Damascus | Montgomery County | 240,301 |
| 20874 | Standard | Germantown, Darnestown | Montgomery County | 240 |
| 20875 | PO Box | Germantown | Montgomery County | 240 |
| 20876 | Standard | Germantown | Montgomery County | 240 |
| 20877 | Standard | Gaithersburg, Montgomery Village, Montgomry Vlg | Montgomery County | 301,240 |
| 20878 | Standard | Gaithersburg, Darnestown, N Potomac, No Potomac, North... | Montgomery County | 240,301 |
| 20879 | Standard | Gaithersburg, Laytonsville, Montgomery Village, Montgo... | Montgomery County | 240,301 |
| 20880 | PO Box | Washington Grove, Washingtn Grv | Montgomery County | 240 |
| 20882 | Standard | Gaithersburg, Laytonsville | Montgomery County | 240 |
| 20883 | PO Box | Gaithersburg | Montgomery County | 240 |
| 20884 | PO Box | Gaithersburg | Montgomery County | 240 |
| 20885 | PO Box | Gaithersburg | Montgomery County | 240 |
| 20886 | Standard | Montgomery Village, Gaithersburg, Montgomry Vlg | Montgomery County | 240,301 |
| 20889 | Unique | Bethesda | Montgomery County | 240 |
| 20891 | PO Box | Kensington | Montgomery County | 240 |
| 20892 | Unique | Bethesda | Montgomery County | 240 |
| 20894 | Unique | Bethesda | Montgomery County | 240 |
| 20895 | Standard | Kensington | Montgomery County | 301,240 |
| 20896 | PO Box | Garrett Park | Montgomery County | 240 |
| 20897 | Unique | Suburb Maryland Fac, Subn Md Fac | Montgomery County | 240 |
| 20898 | PO Box | Gaithersburg | Montgomery County | 240 |
| 20899 | Unique | Gaithersburg | Montgomery County | 240 |
| 20901 | Standard | Silver Spring, Takoma Park | Montgomery County | 240,301 |
| 20902 | Standard | Silver Spring, Wheaton | Montgomery County | 240,301 |
| 20903 | Standard | Silver Spring | Montgomery County | 301 |
| 20904 | Standard | Silver Spring, Colesville | Montgomery County | 301 |
| 20905 | Standard | Silver Spring, Colesville | Montgomery County | 301 |
| 20906 | Standard | Silver Spring, Aspen Hill | Montgomery County | 301,240 |
| 20907 | PO Box | Silver Spring | Montgomery County | 240 |
| 20908 | PO Box | Silver Spring | Montgomery County | 240 |
| 20910 | Standard | Silver Spring | Montgomery County | 240,301 |
| 20911 | PO Box | Silver Spring | Montgomery County | 240 |
| 20912 | Standard | Takoma Park, Silver Spring | Montgomery County | 240,301 |
| 20913 | PO Box | Takoma Park, Silver Spring | Montgomery County | 240 |
| 20914 | PO Box | Silver Spring, Colesville | Montgomery County | 240 |
| 20915 | PO Box | Silver Spring, Wheaton | Montgomery County | 240 |
| 20916 | PO Box | Silver Spring, Aspen Hill | Montgomery County | 240 |
| 20918 | PO Box | Silver Spring | Montgomery County | 240 |
| 20993 | Unique | Silver Spring | Montgomery County | 240 |
| 20997 | Unique | Silver Spring | Montgomery County | 240 |
| 21001 | Standard | Aberdeen | Harford County | 410,443,667 |
| 21005 | Standard | Aberdeen Proving Ground, Aber Prov Grd | Harford County | 443,667 |
| 21009 | Standard | Abingdon | Harford County | 410 |
| 21010 | Standard | Gunpowder, Aber Prov Grd, Aberdeen Proving Ground | Harford County | 410 |
| 21012 | Standard | Arnold | Anne Arundel County | 410 |
| 21013 | Standard | Baldwin | Baltimore County | - |
| 21014 | Standard | Bel Air | Harford County | 410,443 |
| 21015 | Standard | Bel Air | Harford County | 410,443 |
| 21017 | Standard | Belcamp | Harford County | 410 |
| 21018 | PO Box | Benson | Harford County | 410 |
| 21020 | PO Box | Boring | Baltimore County | 410 |
| 21022 | PO Box | Brooklandville, Brooklandvl | Baltimore County | 410 |
| 21023 | PO Box | Butler | Baltimore County | 410 |
| 21027 | PO Box | Chase | Baltimore County | 410 |
| 21028 | Standard | Churchville | Harford County | 410,443 |
| 21029 | Standard | Clarksville | Howard County | 240 |
| 21030 | Standard | Cockeysville, Cockysvil, Hunt Valley | Baltimore County | 410,443 |
| 21031 | Standard | Hunt Valley | Baltimore County | 443,410 |
| 21032 | Standard | Crownsville | Anne Arundel County | 410 |
| 21034 | Standard | Darlington | Harford County | 410,443 |
| 21035 | Standard | Davidsonville | Anne Arundel County | 410 |
| 21036 | Standard | Dayton | Howard County | 240 |
| 21037 | Standard | Edgewater | Anne Arundel County | 301,410 |
| 21040 | Standard | Edgewood | Harford County | 410,443 |
| 21041 | PO Box | Ellicott City | Howard County | 410 |
| 21042 | Standard | Ellicott City | Howard County | 410,443 |
| 21043 | Standard | Ellicott City, Daniels, Ilchester, Oella | Howard County | 410,443 |
| 21044 | Standard | Columbia | Howard County | 240,301,410,443 |
| 21045 | Standard | Columbia | Howard County | 240,301,410,443 |
| 21046 | Standard | Columbia | Howard County | 301,410,443,240 |
| 21047 | Standard | Fallston | Harford County | 410,443 |
| 21048 | Standard | Finksburg, Patapsco | Carroll County | 443 |
| 21050 | Standard | Forest Hill | Harford County | 410 |
| 21051 | Standard | Fork | Baltimore County | 410,443 |
| 21052 | PO Box | Fort Howard | Baltimore County | 410 |
| 21053 | Standard | Freeland | Baltimore County | 410 |
| 21054 | Standard | Gambrills | Anne Arundel County | 240 |
| 21056 | PO Box | Gibson Island | Anne Arundel County | 410 |
| 21057 | Standard | Glen Arm | Baltimore County | 410 |
| 21060 | Standard | Glen Burnie | Anne Arundel County | 443,410 |
| 21061 | Standard | Glen Burnie | Anne Arundel County | 410,443 |
| 21062 | Unique | Glen Burnie | Anne Arundel County | 410 |
| 21065 | Unique | Hunt Valley, Cockys Ht Vly | Baltimore County | 410 |
| 21071 | PO Box | Glyndon | Baltimore County | 410,443 |
| 21074 | Standard | Hampstead, Greenmount | Carroll County | 410,443 |
| 21075 | Standard | Elkridge | Howard County | 240,443,410 |
| 21076 | Standard | Hanover | Anne Arundel County | 443 |
| 21077 | Standard | Harmans | Anne Arundel County | 443 |
| 21078 | Standard | Havre De Grace, Hvre De Grace | Harford County | 667,410,443 |
| 21082 | Standard | Hydes | Baltimore County | 410 |
| 21084 | Standard | Jarrettsville | Harford County | 410,443 |
| 21085 | Standard | Joppa | Harford County | 443 |
| 21087 | Standard | Kingsville, Bradshaw | Baltimore County | - |
| 21088 | PO Box | Lineboro, Manchester | Carroll County | 410 |
| 21090 | Standard | Linthicum Heights, Linthicum, Linthicum Hts | Anne Arundel County | 443,410 |
| 21092 | PO Box | Long Green | Baltimore County | 410 |
| 21093 | Standard | Lutherville Timonium, Lutherville, Luthvle Timon, Timonium | Baltimore County | 410 |
| 21094 | PO Box | Lutherville Timonium, Lutherville, Luthvle Timon, Timonium | Baltimore County | 410 |
| 21098 | Unique | Hanover, Household Bank | Anne Arundel County | 410 |
| 21102 | Standard | Manchester, Lineboro, Millers | Carroll County | 410,443 |
| 21104 | Standard | Marriottsville, Marriottsvl, Woodstock | Carroll County | - |
| 21105 | PO Box | Maryland Line | Baltimore County | 410 |
| 21106 | PO Box | Mayo | Anne Arundel County | 410 |
| 21108 | Standard | Millersville | Anne Arundel County | 410,443 |
| 21111 | Standard | Monkton, Hereford | Baltimore County | - |
| 21113 | Standard | Odenton | Anne Arundel County | 240,301,410,443 |
| 21114 | Standard | Crofton | Anne Arundel County | 240,410,443,667 |
| 21117 | Standard | Owings Mills, Garrison | Baltimore County | 410 |
| 21120 | Standard | Parkton, Bentley Spgs, Bentley Springs | Baltimore County | 410,443 |
| 21122 | Standard | Pasadena, Lake Shore, Millersville, Riviera Beach | Anne Arundel County | 410,443 |
| 21123 | PO Box | Pasadena, Lake Shore, Riviera Beach | Anne Arundel County | 410 |
| 21128 | Standard | Perry Hall | Baltimore County | 410 |
| 21130 | PO Box | Perryman | Harford County | 410 |
| 21131 | Standard | Phoenix, Jacksonville | Baltimore County | 410 |
| 21132 | Standard | Pylesville | Harford County | 410 |
| 21133 | Standard | Randallstown, Mcdonogh Run | Baltimore County | 410,443 |
| 21136 | Standard | Reisterstown, Glyndon | Baltimore County | 410,443 |
| 21139 | PO Box | Riderwood | Baltimore County | 410 |
| 21140 | Standard | Riva | Anne Arundel County | 301,410 |
| 21144 | Standard | Severn | Anne Arundel County | 410,443 |
| 21146 | Standard | Severna Park | Anne Arundel County | 410,443 |
| 21150 | PO Box | Simpsonville | Howard County | 410 |
| 21152 | Standard | Sparks Glencoe, Glencoe, Sparks, Sparks Glenco | Baltimore County | 410,443 |
| 21153 | PO Box | Stevenson | Baltimore County | 410 |
| 21154 | Standard | Street | Harford County | 410 |
| 21155 | Standard | Upperco, Fowbelsburg | Baltimore County | - |
| 21156 | Standard | Upper Falls | Baltimore County | 410 |
| 21157 | Standard | Westminster | Carroll County | 410,443 |
| 21158 | Standard | Westminster | Carroll County | 410,443 |
| 21160 | Standard | Whiteford, Cardiff | Harford County | 410,443 |
| 21161 | Standard | White Hall | Harford County | - |
| 21162 | Standard | White Marsh | Baltimore County | 443,410 |
| 21163 | Standard | Woodstock, Granite | Howard County | - |
| 21201 | Standard | Baltimore | Baltimore city | 410,443,667,301 |
| 21202 | Standard | Baltimore, East Case | Baltimore city | 301,443,410,667 |
| 21203 | PO Box | Baltimore | Baltimore City | 410 |
| 21204 | Standard | Towson, Baltimore, Eudowood, Loch Raven, Ruxton | Baltimore County | 410,443,667 |
| 21205 | Standard | Baltimore | Baltimore city | 410,443 |
| 21206 | Standard | Baltimore, Raspeburg | Baltimore city | 410,443 |
| 21207 | Standard | Gwynn Oak, Baltimore, Woodlawn | Baltimore County | 667,410,443 |
| 21208 | Standard | Pikesville, Baltimore | Baltimore County | 410,443,667 |
| 21209 | Standard | Baltimore, Mount Washington, Mt Washington | Baltimore County | 410 |
| 21210 | Standard | Baltimore, Roland Park | Baltimore city | 443,410 |
| 21211 | Standard | Baltimore | Baltimore city | 410,443 |
| 21212 | Standard | Baltimore, Govans | Baltimore city | 410,443,667 |
| 21213 | Standard | Baltimore, Clifton | Baltimore city | 410,443 |
| 21214 | Standard | Baltimore | Baltimore city | 443,410 |
| 21215 | Standard | Baltimore, Arlington | Baltimore city | 410 |
| 21216 | Standard | Baltimore | Baltimore city | 410 |
| 21217 | Standard | Baltimore, Druid | Baltimore city | 410,443 |
| 21218 | Standard | Baltimore | Baltimore city | 443,410 |
| 21219 | Standard | Sparrows Point, Baltimore, Edgemere, Sparrows Pt | Baltimore County | 410,443 |
| 21220 | Standard | Middle River, Baltimore | Baltimore County | 410,443 |
| 21221 | Standard | Essex, Baltimore | Baltimore County | 410,443 |
| 21222 | Standard | Dundalk, Baltimore | Baltimore County | 410,443 |
| 21223 | Standard | Baltimore, Franklin | Baltimore city | 667,410 |
| 21224 | Standard | Baltimore, Highlandtown | Baltimore city | 410 |
| 21225 | Standard | Brooklyn, Baltimore, Brooklyn Park | Baltimore city | 410,443 |
| 21226 | Standard | Curtis Bay, Baltimore, Carvel Beach, Chestnut Hill C... | Anne Arundel County | 410,443 |
| 21227 | Standard | Halethorpe, Arbutus, Baltimore, Lansdowne | Baltimore County | 240,443,410 |
| 21228 | Standard | Catonsville, Baltimore | Baltimore County | 410,443 |
| 21229 | Standard | Baltimore, Carroll | Baltimore city | 410 |
| 21230 | Standard | Baltimore | Baltimore city | 410,667 |
| 21231 | Standard | Baltimore | Baltimore city | 410,443,667 |
| 21233 | Standard | Baltimore | Baltimore City | 410,667,301,443 |
| 21234 | Standard | Parkville, Baltimore | Baltimore County | 410,443 |
| 21235 | Unique | Baltimore | Baltimore City | 410 |
| 21236 | Standard | Nottingham, Baltimore | Baltimore County | 410 |
| 21237 | Standard | Rosedale, Baltimore | Baltimore County | 410 |
| 21239 | Standard | Baltimore, Idlewylde, Loch Hill, Northwood | Baltimore city | 443,410 |
| 21240 | Standard | Baltimore | Anne Arundel County | 240,410,443 |
| 21241 | Unique | Baltimore | Baltimore City | 410 |
| 21244 | Standard | Windsor Mill, Baltimore | Baltimore County | 410 |
| 21250 | Unique | Baltimore | Baltimore County | 410 |
| 21251 | Unique | Baltimore | Baltimore city | 410 |
| 21252 | Unique | Towson, Baltimore | Baltimore County | 410 |
| 21260 | Standard | Baltimore | Baltimore City | 410 |
| 21261 | Standard | Baltimore, Essex | Baltimore City | 410 |
| 21263 | Unique | Baltimore | Baltimore City | 410 |
| 21264 | Unique | Baltimore | Baltimore City | 410 |
| 21265 | Unique | Baltimore | Baltimore City | 410 |
| 21268 | Unique | Baltimore | Baltimore City | 410 |
| 21270 | PO Box | Baltimore | Baltimore City | 410 |
| 21273 | Unique | Baltimore | Baltimore City | 410 |
| 21274 | Unique | Baltimore | Baltimore City | 410 |
| 21275 | Unique | Baltimore | Baltimore City | 410 |
| 21278 | Unique | Baltimore | Baltimore City | 410 |
| 21279 | Unique | Baltimore | Baltimore City | 410 |
| 21280 | Unique | Baltimore | Baltimore City | 410 |
| 21281 | PO Box | Baltimore | Baltimore City | 410 |
| 21282 | PO Box | Baltimore | Baltimore City | 410 |
| 21283 | Unique | Baltimore, Shared Firm Zip Code | Baltimore City | 410 |
| 21284 | PO Box | Baltimore, Loch Raven | Baltimore City | 410 |
| 21285 | PO Box | Baltimore | Baltimore City | 410 |
| 21286 | Standard | Towson, Baltimore, Loch Raven | Baltimore County | 667,410,443 |
| 21287 | Unique | Baltimore | Baltimore City | 410 |
| 21288 | Unique | Baltimore | Baltimore City | 410 |
| 21289 | Unique | Baltimore | Baltimore City | 410 |
| 21290 | Unique | Baltimore | Baltimore City | 410 |
| 21297 | PO Box | Baltimore | Baltimore City | 410 |
| 21298 | Unique | Baltimore | Baltimore City | 410 |
| 21401 | Standard | Annapolis, Cape Saint Claire, Cpe St Claire | Anne Arundel County | 410,443,301 |
| 21402 | Standard | Annapolis, Naval Academy | Anne Arundel County | 410,443 |
| 21403 | Standard | Annapolis, Eastport, Highland Bch | Anne Arundel County | 301,410,443 |
| 21404 | PO Box | Annapolis | Anne Arundel County | 410 |
| 21405 | Standard | Annapolis, Sherwood Forest, Sherwood Frst | Anne Arundel County | 301,410,443 |
| 21409 | Standard | Annapolis | Anne Arundel County | 443 |
| 21411 | Unique | Annapolis | Anne Arundel County | 410 |
| 21412 | Unique | Annapolis | Anne Arundel County | 410 |
| 21501 | PO Box | Cumberland | Allegany County | 240 |
| 21502 | Standard | Cumberland, Cresaptown, Lavale | Allegany County | 240,301 |
| 21503 | PO Box | Cumberland | Allegany County | 240 |
| 21504 | PO Box | Cumberland, Lavale | Allegany County | 240 |
| 21505 | PO Box | Cumberland, Cresaptown | Allegany County | 240 |
| 21520 | Standard | Accident | Garrett County | 301 |
| 21521 | Standard | Barton | Allegany County | - |
| 21522 | Standard | Bittinger | Garrett County | 301 |
| 21523 | Standard | Bloomington | Garrett County | 240 |
| 21524 | PO Box | Corriganville | Allegany County | 240 |
| 21528 | PO Box | Eckhart Mines | Allegany County | 240 |
| 21529 | PO Box | Ellerslie | Allegany County | 240 |
| 21530 | Standard | Flintstone | Allegany County | 240 |
| 21531 | Standard | Friendsville | Garrett County | 301 |
| 21532 | Standard | Frostburg | Allegany County | 240,301 |
| 21536 | Standard | Grantsville, Jennings | Garrett County | 240,301 |
| 21538 | Standard | Kitzmiller, Shallmar | Garrett County | 301 |
| 21539 | Standard | Lonaconing | Allegany County | 301 |
| 21540 | Standard | Luke, Westernport | Allegany County | 301 |
| 21541 | Standard | Mc Henry, Sang Run | Garrett County | 301 |
| 21542 | PO Box | Midland | Allegany County | 240 |
| 21543 | PO Box | Midlothian | Allegany County | 240 |
| 21545 | Standard | Mount Savage | Allegany County | 301 |
| 21550 | Standard | Oakland, Crellin, Deer Park, Hutton, Loch Lyn Hgh... | Garrett County | 240,301 |
| 21555 | Standard | Oldtown | Allegany County | 301 |
| 21556 | PO Box | Pinto | Allegany County | 240 |
| 21557 | Standard | Rawlings | Allegany County | 240 |
| 21560 | PO Box | Spring Gap | Mineral County | 240 |
| 21561 | Standard | Swanton | Garrett County | 301 |
| 21562 | Standard | Westernport, Mccoole | Allegany County | 301,240 |
| 21601 | Standard | Easton | Talbot County | 410,443 |
| 21606 | Unique | Easton, First Fulfillment & Mgr Co | Talbot County | 410 |
| 21609 | PO Box | Bethlehem | Caroline County | 410 |
| 21610 | Standard | Betterton | Kent County | 410 |
| 21612 | Standard | Bozman | Talbot County | 410 |
| 21613 | Standard | Cambridge | Dorchester County | 410,443 |
| 21620 | Standard | Chestertown | Kent County | 410,443 |
| 21622 | Standard | Church Creek | Dorchester County | 410 |
| 21624 | PO Box | Claiborne | Talbot County | 410 |
| 21625 | Standard | Cordova | Talbot County | 410 |
| 21626 | Standard | Crapo | Dorchester County | 410 |
| 21627 | Standard | Crocheron | Dorchester County | 410 |
| 21629 | Standard | Denton | Caroline County | 410,443 |
| 21631 | Standard | East New Market, E New Market | Dorchester County | 410 |
| 21632 | Standard | Federalsburg | Caroline County | 410,443 |
| 21634 | Standard | Fishing Creek | Dorchester County | 410 |
| 21635 | Standard | Galena, Golts | Kent County | 410 |
| 21636 | Standard | Goldsboro | Caroline County | 410 |
| 21639 | Standard | Greensboro | Caroline County | 410 |
| 21640 | Standard | Henderson | Caroline County | 410 |
| 21641 | PO Box | Hillsboro | Caroline County | 410 |
| 21643 | Standard | Hurlock | Dorchester County | 410 |
| 21645 | Standard | Kennedyville | Kent County | 410 |
| 21647 | Standard | Mcdaniel | Talbot County | 410 |
| 21648 | Standard | Madison | Dorchester County | 410 |
| 21649 | Standard | Marydel | Caroline County | 410 |
| 21650 | Standard | Massey | Kent County | 410 |
| 21651 | Standard | Millington | Kent County | 410 |
| 21652 | PO Box | Neavitt | Talbot County | 410 |
| 21653 | PO Box | Newcomb | Talbot County | 410 |
| 21654 | Standard | Oxford | Talbot County | 410 |
| 21655 | Standard | Preston | Caroline County | 410 |
| 21659 | Standard | Rhodesdale, Brookview, Eldorado, Galestown | Dorchester County | 410,443 |
| 21660 | Standard | Ridgely | Caroline County | 410 |
| 21661 | Standard | Rock Hall | Kent County | 410 |
| 21662 | Standard | Royal Oak | Talbot County | 410 |
| 21663 | Standard | Saint Michaels, St Michaels | Talbot County | 410 |
| 21664 | PO Box | Secretary | Dorchester County | 410 |
| 21665 | Standard | Sherwood | Talbot County | 410 |
| 21667 | Standard | Still Pond | Kent County | 410 |
| 21669 | PO Box | Taylors Island, Taylors Is | Dorchester County | 410 |
| 21670 | PO Box | Templeville | Caroline County | 410 |
| 21671 | Standard | Tilghman | Talbot County | 410 |
| 21672 | Standard | Toddville | Dorchester County | 410 |
| 21673 | Standard | Trappe | Talbot County | 410,443 |
| 21675 | Standard | Wingate | Dorchester County | 410 |
| 21676 | Standard | Wittman | Talbot County | 410 |
| 21677 | Standard | Woolford | Dorchester County | 410 |
| 21678 | Standard | Worton, Lynch | Kent County | 410 |
| 21679 | Standard | Wye Mills | Talbot County | 410 |
| 21681 | Unique | Ridgely | Caroline County | 410 |
| 21682 | Unique | Ridgely | Caroline County | 410 |
| 21683 | Unique | Ridgely | Caroline County | 410 |
| 21684 | Unique | Ridgely | Caroline County | 410 |
| 21685 | Unique | Ridgely | Caroline County | 410 |
| 21686 | Unique | Ridgely | Caroline County | 410 |
| 21687 | Unique | Ridgely | Caroline County | 410 |
| 21688 | Unique | Ridgely | Caroline County | 410 |
| 21690 | Unique | Chestertown | Kent County | 410 |
| 21701 | Standard | Frederick, Lewistown | Frederick County | 240,301 |
| 21702 | Standard | Frederick, Fort Detrick | Frederick County | 240,301 |
| 21703 | Standard | Frederick | Frederick County | 301,240 |
| 21704 | Standard | Frederick, Urbana | Frederick County | 301,240 |
| 21705 | PO Box | Frederick | Frederick County | 240 |
| 21709 | Unique | Frederick | Frederick County | 240 |
| 21710 | Standard | Adamstown, Doubs | Frederick County | 240,301 |
| 21711 | Standard | Big Pool | Washington County | 240 |
| 21713 | Standard | Boonsboro | Washington County | 240 |
| 21714 | PO Box | Braddock Heights, Braddock Hts | Frederick County | 240 |
| 21715 | PO Box | Brownsville | Washington County | 240 |
| 21716 | Standard | Brunswick | Frederick County | 301 |
| 21717 | PO Box | Buckeystown | Frederick County | 240 |
| 21718 | Standard | Burkittsville | Frederick County | 240 |
| 21719 | Standard | Cascade, Fort Ritchie, Highfield | Washington County | 240,301 |
| 21720 | PO Box | Cavetown | Washington County | 240 |
| 21721 | PO Box | Chewsville | Washington County | 240 |
| 21722 | Standard | Clear Spring, Big Spring | Washington County | 301 |
| 21723 | Standard | Cooksville | Howard County | 410 |
| 21727 | Standard | Emmitsburg | Frederick County | 240,301 |
| 21733 | Standard | Fairplay, St James | Washington County | 240 |
| 21734 | PO Box | Funkstown | Washington County | 240 |
| 21737 | Standard | Glenelg | Howard County | 410 |
| 21738 | Standard | Glenwood | Howard County | 410,443 |
| 21740 | Standard | Hagerstown | Washington County | 240,301 |
| 21741 | PO Box | Hagerstown | Washington County | 240 |
| 21742 | Standard | Hagerstown | Washington County | 240,301 |
| 21746 | Unique | Hagerstown | Washington County | 240 |
| 21747 | PO Box | Hagerstown | Washington County | 240 |
| 21748 | Unique | Hagerstown | Washington County | 240 |
| 21749 | Unique | Hagerstown | Washington County | 240 |
| 21750 | Standard | Hancock | Washington County | 240,301 |
| 21754 | Standard | Ijamsville | Frederick County | 240 |
| 21755 | Standard | Jefferson | Frederick County | 240 |
| 21756 | Standard | Keedysville | Washington County | 301 |
| 21757 | Standard | Keymar, Detour, Middleburg | Frederick County | - |
| 21758 | Standard | Knoxville, Brunswick | Frederick County | 301 |
| 21759 | PO Box | Ladiesburg | Frederick County | 240 |
| 21762 | PO Box | Libertytown | Frederick County | 240 |
| 21765 | PO Box | Lisbon | Howard County | 410 |
| 21766 | Standard | Little Orleans, Ltl Orleans | Allegany County | 240 |
| 21767 | Standard | Maugansville | Washington County | 240 |
| 21769 | Standard | Middletown | Frederick County | 240,301 |
| 21770 | Standard | Monrovia | Frederick County | 240,301 |
| 21771 | Standard | Mount Airy | Frederick County | 240,301 |
| 21773 | Standard | Myersville | Frederick County | 240,301 |
| 21774 | Standard | New Market | Frederick County | 301 |
| 21775 | PO Box | New Midway | Frederick County | 240 |
| 21776 | Standard | New Windsor | Carroll County | 410,443 |
| 21777 | Standard | Point Of Rocks, Pt Of Rocks | Frederick County | 240 |
| 21778 | Standard | Rocky Ridge | Frederick County | 240 |
| 21779 | Standard | Rohrersville, Gapland | Washington County | 240 |
| 21780 | Standard | Sabillasville | Frederick County | 240 |
| 21781 | PO Box | Saint James | Washington County | 240 |
| 21782 | Standard | Sharpsburg | Washington County | 240 |
| 21783 | Standard | Smithsburg | Washington County | 240,301 |
| 21784 | Standard | Sykesville, Eldersburg, Gaither | Carroll County | 410,443 |
| 21787 | Standard | Taneytown | Carroll County | 410,443 |
| 21788 | Standard | Thurmont, Graceham | Frederick County | 240,301 |
| 21790 | Standard | Tuscarora | Frederick County | 240 |
| 21791 | Standard | Union Bridge, Linwood | Carroll County | 410,443 |
| 21792 | PO Box | Unionville | Frederick County | 240 |
| 21793 | Standard | Walkersville | Frederick County | 301 |
| 21794 | Standard | West Friendship, W Friendship | Howard County | 410 |
| 21795 | Standard | Williamsport | Washington County | 240,301 |
| 21797 | Standard | Woodbine | Howard County | - |
| 21798 | Standard | Woodsboro | Frederick County | 240 |
| 21801 | Standard | Salisbury | Wicomico County | 443,410,667 |
| 21802 | PO Box | Salisbury | Wicomico County | 410 |
| 21803 | PO Box | Salisbury | Wicomico County | 410 |
| 21804 | Standard | Salisbury | Wicomico County | 410,667,443 |
| 21810 | PO Box | Allen | Wicomico County | 410 |
| 21811 | Standard | Berlin, Ocean Pines, Ocean Pnes | Worcester County | 410,443 |
| 21813 | Standard | Bishopville | Worcester County | 410,443 |
| 21814 | Standard | Bivalve | Wicomico County | 410 |
| 21817 | Standard | Crisfield | Somerset County | 410,443 |
| 21821 | Standard | Deal Island, Chance, Dames Quarter, Wenona | Somerset County | 410 |
| 21822 | Standard | Eden | Somerset County | - |
| 21824 | Standard | Ewell | Somerset County | 410 |
| 21826 | Standard | Fruitland | Wicomico County | 410 |
| 21829 | Standard | Girdletree | Worcester County | 410 |
| 21830 | Standard | Hebron | Wicomico County | 410,443 |
| 21835 | Standard | Linkwood | Dorchester County | 410,443 |
| 21836 | PO Box | Manokin | Somerset County | 410 |
| 21837 | Standard | Mardela Springs, Mardela, Mardela Spgs | Wicomico County | 410,443 |
| 21838 | Standard | Marion Station, Marion, Marion Sta | Somerset County | 410 |
| 21840 | Standard | Nanticoke | Wicomico County | 410,443 |
| 21841 | Standard | Newark | Worcester County | 410 |
| 21842 | Standard | Ocean City | Worcester County | 410,443 |
| 21843 | PO Box | Ocean City | Worcester County | 410 |
| 21849 | Standard | Parsonsburg | Wicomico County | 410 |
| 21850 | Standard | Pittsville | Wicomico County | 410 |
| 21851 | Standard | Pocomoke City | Worcester County | 410,443 |
| 21852 | PO Box | Powellville | Wicomico County | 410 |
| 21853 | Standard | Princess Anne | Somerset County | 410,443 |
| 21856 | Standard | Quantico | Wicomico County | 410 |
| 21857 | PO Box | Rehobeth | Somerset County | 410 |
| 21861 | PO Box | Sharptown | Wicomico County | 410 |
| 21862 | Standard | Showell | Worcester County | 410 |
| 21863 | Standard | Snow Hill | Worcester County | 410,443 |
| 21864 | Standard | Stockton | Worcester County | 410 |
| 21865 | Standard | Tyaskin | Wicomico County | 410 |
| 21866 | PO Box | Tylerton | Somerset County | 410 |
| 21867 | PO Box | Upper Fairmount, Fairmount, Upper Fairmt, Upper Hill | Somerset County | 410 |
| 21869 | Standard | Vienna | Dorchester County | 410 |
| 21871 | Standard | Westover | Somerset County | 410 |
| 21872 | Standard | Whaleyville | Worcester County | 410 |
| 21874 | Standard | Willards | Wicomico County | 410,443 |
| 21875 | Standard | Delmar | Wicomico County | 410,443 |
| 21890 | Unique | Westover | Somerset County | 410 |
| 21901 | Standard | North East | Cecil County | 410,443 |
| 21902 | PO Box | Perry Point | Cecil County | 410 |
| 21903 | Standard | Perryville | Cecil County | 410,443 |
| 21904 | Standard | Port Deposit, Bainbridge | Cecil County | 410,443 |
| 21911 | Standard | Rising Sun | Cecil County | 410 |
| 21912 | Standard | Warwick | Cecil County | 410 |
| 21913 | PO Box | Cecilton | Cecil County | 410 |
| 21914 | PO Box | Charlestown | Cecil County | 410 |
| 21915 | Standard | Chesapeake City, Chesapeake Cy | Cecil County | 443,410 |
| 21916 | PO Box | Childs | Cecil County | 410 |
| 21917 | Standard | Colora | Cecil County | 410 |
| 21918 | Standard | Conowingo | Cecil County | 410 |
| 21919 | Standard | Earleville | Cecil County | 410 |
| 21920 | PO Box | Elk Mills | Cecil County | 410 |
| 21921 | Standard | Elkton | Cecil County | 410,443 |
| 21922 | PO Box | Elkton | Cecil County | 410 |
| 21930 | PO Box | Georgetown | Cecil County | 410 |