ZIP Codes in are essential for accurate and timely mail delivery. Managed by the United States Postal Service (USPS), these postal codes help identify specific regions, cities, and post offices. Typically, the first digit represents a broad region, the next two indicate a smaller geographic area, and the final two digits identify specific delivery zones or post offices within .
| Post Office | San Juan |
| Division | San Juan |
| Pincode | 926 |
| Post Office | Caguas |
| Division | Caguas |
| Pincode | 725 |
| Post Office | Toa Baja |
| Division | Toa Baja |
| Pincode | 949 |
| Post Office | Toa Alta |
| Division | Toa Alta |
| Pincode | 953 |
| Post Office | Bayamon |
| Division | Bayamon |
| Pincode | 956 |
| Post Office | Arecibo |
| Division | Arecibo |
| Pincode | 612 |
"Explore Puerto Rico ZIP Codes: A Guide to the Postal Codes of the Puerto Rico State"