| City Name | County | Zip Code |
| Fair Hill | Cecil | 21921 |
| Fairplay | Washington | 21733 |
| Fairmount | Somerset | 21867 |
| Fairmount Heights | Prince George's | 20743 |
| Fallston | Harford | 21047 |
| Farmington | Cecil | 221911 |
| Faulkner | Charles | 20632 |
| Federalsburg | Caroline | 22632 |
| Finksburg | Carroll | 21048 |
| Finzel | Garrett | 21532 |
| Fishing Creek | Dorchester | 21634 |
| Flickersville | Washington | 21756 |
| Flintstone | Allegany | 21530 |
| Flohrville | Carroll | 21784 |
| Forest Heights | Prince George's | 20745 |
| Forest Hill | Harford | 21050 |
| Foreston | Carroll | 21155 |
| Forestville | Prince George's | ***** |
| Fork | Baltimore | 21051 |
| Fort Howard | Baltimore | 21052 |
| Fort Washington | Prince George's | ***** |
| Fowbelsburg | Baltimore | 21155 |
| Frederick | Frederick | ***** |
| Freeland | Baltimore | 21053 |
| Friends Creek | Frederick | 21727 |
| Friendship | Anne Arundel | 20758 |
| Friendship Heights | Montgomery | ***** |
| Friendsville | Garrett | 21531 |
| Frizzelburg | Carroll | 21158 |
| Frostburg | Allegany | 21532 |
| Fruitland | Wicomico | 21826 |
| Fulton | Howard | 20759 |
| Funkstown | Washington | 21734 |
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