| City | Area |
| Aberdeen | C |
| Abingdon | C |
| Adelphi | G |
| Alexandria | J |
| Andrews Air Force Base | H |
| Annandale | J |
| Annapolis | B |
| Arbutus | A |
| Arlington | J |
| Baltimore City | A |
| Belair | C |
| Belcamp | C |
| Beltsville | G |
| Bethesda | H |
| Blandensburg | G |
| Bowie | B |
| Brentwood | G |
| Brooklyn | A |
| Cabin John | H |
| Capitol Heights | G |
| Carney | A |
| Carsins Run | C |
| Catonsville | A |
| Cheverly | G |
| Clarkesville | A |
| Clarksburg | H |
| Clinton | J |
| Cockeysville | B |
| Collge Park | G |
| Columbia | A |
| Crofton | B |
| Curtis Bay | A |
| District Heights | J |
| Dorsey | A |
| Dulles Airport | J |
| Dundalk | A |
| East Point | A |
| Eastover | E |
| Edgemere | B |
| Edgewood | C |
| Elderburg | C |
| Elkridge | A |
| Ellicott City | A |
| Emmorton | C |
| Essex | B |
| Fairfax | J |
| Fairfield | A |
| Falls Church | J |
| Ferndale | A |
| Finksburg | C |
| Forestville | J |
| Fort Meade | A |
| Fort Washington | J |
| Fullerton | B |
| Gaithersburg | H |
| Garrison | B |
| Germantown | H |
| Glen Arm | B |
| Glen Burnie | A |
| Glen Echo | H |
| Glenn Dale | G |
| Great Falls | J |
| Greenbelt | G |
| Guilford | A |
| Halethrope | A |
| Hampstead | C |
| Hanover | A |
| Harmans | A |
| Harundale | A |
| Harwood | F |
| Havre de Grace | C |
| Herndon | J |
| Hillcrest Heights | E |
| Hunt Valley | B |
| Hyattsville | G |
| Indian Head | D |
| Jessup | A |
| Kensington | H |
| Kenwood | E |
| Landover | D |
| Landsdowne | A |
| Langley Park | D |
| Lanham | G |
| Largo | J |
| Laurel | B |
| Linthicum | A |
| Long Green | B |
| Lorton | J |
| Lutherville | B |
| Marlow Heights | E |
| Martin Airport | B |
| McLean | J |
| Middle River | B |
| Mt. Rainer | J |
| Odenton | A |
| Overlea | A |
| Owings Mills | B |
| Oxen Hill | J |
| Parkville | A |
| Pikesville | A |
| Potomac | H |
| Randallstown | B |
| Reisterstown | B |
| Relay | A |
| Reston | J |
| Riverdale | G |
| Rockville | H |
| Rosedale | A |
| Savage | B |
| Scaggsville | B |
| Seat Pleasant | E |
| Silver Spring | H |
| Simpsonville | A |
| Sparks | B |
| Sparrows Point | B |
| Springfield | J |
| Stevenson | B |
| Suitland | G |
| Sykesville | C |
| Takoma Park | H |
| Temple Hills | G |
| Timonium | B |
| Towson | A |
| Tuxedo | D |
| Upper Marlboro | J |
| Vienna | J |
| Waldorf | D |
| Washington D.C. | J |
| Waterloo | A |
| Westminster | C |
| Wheaton | H |
| White Marsh | B |
| White Oak | D |
| Woodbridge | J |
| Woodlawn | A |
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