23 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 21215 | Baltimore | 53,674 |
| 21206 | Baltimore | 51,020 |
| 21218 | Baltimore | 46,548 |
| 21224 | Baltimore | 44,915 |
| 21229 | Baltimore | 44,332 |
| 21212 | Baltimore | 33,861 |
| 21230 | Baltimore | 32,883 |
| 21217 | Baltimore | 31,634 |
| 21213 | Baltimore | 28,862 |
| 21239 | Baltimore | 28,417 |
| 21216 | Baltimore | 28,385 |
| 21214 | Baltimore | 21,510 |
| 21223 | Baltimore | 20,728 |
| 21202 | Baltimore | 20,115 |
| 21201 | Baltimore | 18,305 |
| 21211 | Baltimore | 15,935 |
| 21210 | Baltimore | 15,005 |
| 21231 | Baltimore | 14,780 |
| 21205 | Baltimore | 14,684 |
| 21226 | Curtis Bay | 5,902 |
| 21251 | Baltimore | 319 |
| 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).