Post Offices List in Carolina Municipio County, Puerto Rico:
| Carolina Post Office | 1000 Ave Sanchez Osorio, Carolina, PR 00983 |
| Carolina Pueblo Post Office | 108 Calle Munoz Rivera S, Carolina, PR 00985 |
| Plaza Carolina Post Office | 200 Ave Fragoso Ste 322, Carolina, PR 00983 |
| San Juan Airport Retail Post Office | 35 Ave Jose A Tony Santana, Carolina, PR 00979 |