Post office locations in 00791
| Post Office | Address | Phone | Hours |
| HUMACAO | 122 CALLE FONT MARTELO HUMACAO, PR 00791 - 9998 | 787-850-2240 | Mon-Fri 8:00am - 5:00pm Sat 8:00am - 12:00pm Sun Closed |
| Post Office | Address | Phone | Hours |
| HUMACAO | 122 CALLE FONT MARTELO HUMACAO, PR 00791 - 9998 | 787-850-2240 | Mon-Fri 8:00am - 5:00pm Sat 8:00am - 12:00pm Sun Closed |