State · United States
Maryland postal codes
431 cities · 605 localities · 605 postal codes · state code MD
Area codes (6)
227240301410443667
Area codes in use in this state, from NANPA central-office assignments.
Popular cities
- Baltimore
- Silver Spring
- Hyattsville
- Frederick
- Rockville
- Gaithersburg
- Laurel
- Bowie
- Upper Marlboro
- Columbia
- Hagerstown
- Glen Burnie
All cities (431)
A15
B45
- Baldwin
- Baltimore
- Barclay
- Barnesville
- Barstow
- Barton
- Beallsville
- Bel Air
- Bel Alton
- Belcamp
- Beltsville
- Benedict
- Benson
- Berlin
- Bethesda
- Bethlehem
- Betterton
- Big Pool
- Bishopville
- Bittinger
- Bivalve
- Bladensburg
- Bloomington
- Boonsboro
- Boring
- Bowie
- Boyds
- Bozman
- Braddock Heights
- Brandywine
- Brentwood
- Brinklow
- Brookeville
- Brooklandville
- Brooklyn
- Broomes Island
- Brownsville
- Brunswick
- Bryans Road
- Bryantown
- Buckeystown
- Burkittsville
- Burtonsville
- Bushwood
- Butler
C51
- Cabin John
- California
- Callaway
- Cambridge
- Capitol Heights
- Cascade
- Catonsville
- Cavetown
- Cecilton
- Centreville
- Chaptico
- Charlestown
- Charlotte Hall
- Chase
- Cheltenham
- Chesapeake Beach
- Chesapeake City
- Chester
- Chestertown
- Chevy Chase
- Chewsville
- Childs
- Church Creek
- Church Hill
- Churchton
- Churchville
- Claiborne
- Clarksburg
- Clarksville
- Clear Spring
- Clements
- Clinton
- Cobb Island
- Cockeysville
- College Park
- Colora
- Coltons Point
- Columbia
- Compton
- Conowingo
- Cooksville
- Cordova
- Corriganville
- Crapo
- Crisfield
- Crocheron
- Crofton
- Crownsville
- Crumpton
- Cumberland
- Curtis Bay
D17
E15
F20
G24
H20
L19
M30
- Madison
- Manchester
- Manokin
- Marbury
- Mardela Springs
- Marion Station
- Marriottsville
- Marydel
- Maryland Line
- Massey
- Maugansville
- Mayo
- Mc Henry
- Mcdaniel
- Mechanicsville
- Middle River
- Middletown
- Midland
- Midlothian
- Millersville
- Millington
- Monkton
- Monrovia
- Montgomery Village
- Morganza
- Mount Airy
- Mount Rainier
- Mount Savage
- Mount Victoria
- Myersville
N12
P29
R18
S39
- Sabillasville
- Saint Inigoes
- Saint James
- Saint Leonard
- Saint Marys City
- Saint Michaels
- Salisbury
- Sandy Spring
- Savage
- Scotland
- Secretary
- Severn
- Severna Park
- Shady Side
- Sharpsburg
- Sharptown
- Sherwood
- Showell
- Silver Spring
- Simpsonville
- Smithsburg
- Snow Hill
- Solomons
- Southern Md Facility
- Sparks Glencoe
- Sparrows Point
- Spencerville
- Spring Gap
- Stevenson
- Stevensville
- Still Pond
- Stockton
- Street
- Suburb Maryland Fac
- Sudlersville
- Suitland
- Sunderland
- Swanton
- Sykesville
T15
Postal code index (605)
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Data generated on 2026-08-21 · Sources · Report an error.