23 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 21215 | Baltimore | 52,078 |
| 21206 | Baltimore | 49,901 |
| 21224 | Baltimore | 46,949 |
| 21218 | Baltimore | 44,903 |
| 21229 | Baltimore | 44,687 |
| 21230 | Baltimore | 33,509 |
| 21212 | Baltimore | 33,425 |
| 21217 | Baltimore | 31,125 |
| 21239 | Baltimore | 28,635 |
| 21213 | Baltimore | 27,881 |
| 21216 | Baltimore | 27,296 |
| 21202 | Baltimore | 21,506 |
| 21214 | Baltimore | 21,295 |
| 21223 | Baltimore | 19,793 |
| 21201 | Baltimore | 17,819 |
| 21211 | Baltimore | 15,481 |
| 21210 | Baltimore | 14,612 |
| 21231 | Baltimore | 14,556 |
| 21205 | Baltimore | 13,665 |
| 21226 | Curtis Bay | 6,593 |
| 21251 | Baltimore | 249 |
| 21233 | Baltimore | 0 |
| 21287 | Baltimore | 0 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 23 ZCTAs in Baltimore city, Maryland (US Census).