21 cities
| City | County | 2026 Pop. ↓ |
|---|---|---|
| Hagerstown | Washington County | 44,104 |
| Hyattsville | Prince George's County | 21,008 |
| Hillcrest Heights | Prince George's County | 15,486 |
| Havre de Grace | Harford County | 15,415 |
| Honeygo | Baltimore County | 14,796 |
| Halfway | Washington County | 11,037 |
| Hampstead | Carroll County | 6,311 |
| Hampton | Baltimore County | 5,158 |
| Hillandale | Prince George's County | 4,637 |
| Huntingtown | Calvert County | 3,242 |
| Herald Harbor | Anne Arundel County | 2,485 |
| Hughesville | Charles County | 2,299 |
| Hurlock | Dorchester County | 2,105 |
| Hancock | Washington County | 1,579 |
| Hebron | Wicomico County | 1,119 |
| Highfield-Cascade | Frederick County | 1,071 |
| Highland | Howard County | 728 |
| Hutton | Garrett County | 190 |
| Henderson | Caroline County | 162 |
| Hillsboro | Caroline County | 135 |
| Highland Beach | Anne Arundel County | 107 |