23 ZIP Codes
| Zip Code | City | Population ↓ |
|---|---|---|
| 21215 | Baltimore | 52,229 |
| 21206 | Baltimore | 48,902 |
| 21224 | Baltimore | 47,465 |
| 21229 | Baltimore | 46,679 |
| 21218 | Baltimore | 44,014 |
| 21212 | Baltimore | 33,974 |
| 21230 | Baltimore | 32,977 |
| 21217 | Baltimore | 30,792 |
| 21216 | Baltimore | 29,426 |
| 21213 | Baltimore | 28,058 |
| 21239 | Baltimore | 27,346 |
| 21214 | Baltimore | 21,092 |
| 21202 | Baltimore | 20,683 |
| 21223 | Baltimore | 19,572 |
| 21201 | Baltimore | 18,307 |
| 21211 | Baltimore | 14,969 |
| 21231 | Baltimore | 14,969 |
| 21210 | Baltimore | 14,134 |
| 21205 | Baltimore | 13,013 |
| 21226 | Curtis Bay | 6,674 |
| 21251 | Baltimore | 191 |
| 21233 | Baltimore | 0 |
| 21287 | Baltimore | 0 |
The data shown reflect ZCTAs from the US Census. As of 2025, there are 23 ZCTAs in Baltimore city, Maryland (US Census).