| Localité | Code postal |
|---|---|
| Arlington, Baltimore City | 21215 |
| Baltimore, Baltimore City | 21201, 21202, 21203, 21205, 21206, … |
| Brooklyn, Baltimore City | 21225 |
| Brooklyn Park, Baltimore City | 21225 |
| Carroll, Baltimore City | 21229 |
| Clifton, Baltimore City | 21213 |
| Clifton East End, Baltimore City | 21205, 21213 |
| Druid, Baltimore City | 21217 |
| East Case, Baltimore City | 21202 |
| East End, Baltimore City | 21205 |
| Franklin, Baltimore City | 21223 |
| Govans, Baltimore City | 21212 |
| Hamilton, Baltimore City | 21214 |
| Hampden, Baltimore City | 21211 |
| Highlandtown, Baltimore City | 21224 |
| Idlewylde, Baltimore City | 21239 |
| Loch Hill, Baltimore City | 21239 |
| Mount Washington, Baltimore City | 21209 |
| Northwood, Baltimore City | 21239 |
| Patterson, Baltimore City | 21231 |
| Raspeburg, Baltimore City | 21206 |
| Roland Park, Baltimore City | 21210 |
| Walbrook, Baltimore City | 21216 |
| Waverly, Baltimore City | 21218 |