17 zips
| Zip Code | City | Population ↓ |
|---|---|---|
| 926 | San Juan | 93,308 |
| 924 | San Juan | 47,800 |
| 921 | San Juan | 34,197 |
| 923 | San Juan | 24,826 |
| 915 | San Juan | 24,484 |
| 917 | San Juan | 18,216 |
| 920 | San Juan | 16,403 |
| 918 | San Juan | 16,379 |
| 907 | San Juan | 15,911 |
| 927 | San Juan | 13,675 |
| 911 | San Juan | 7,430 |
| 901 | San Juan | 6,762 |
| 913 | San Juan | 6,700 |
| 912 | San Juan | 6,219 |
| 909 | San Juan | 5,466 |
| 925 | San Juan | 4,777 |
| 906 | San Juan | 46 |
The data shown reflect ZCTAs from the US Census. As of 2024, there are 17 ZCTAs in San Juan Municipio, Puerto Rico (US Census).