| NAME | TEL CODE | TELEPHONE | POSTAL CODE | CITY |
| Post Office (EL.TA) of Serifos | 0281 | 51239 | 840 05 | SERIFOS |
| CITY | POSTAL CODE |
| AGIOS IOANNIS | 840 05 |
| GALANI | 840 05 |
| KENTARHOS | 840 05 |
| KOUTALAS | 840 05 |
| LIVADI | 840 05 |
| MEGALO HORIO | 840 05 |
| MEGALO LIVADI | 840 05 |
| PANAGIA | 840 05 |
| PIRGOS | 840 05 |
| RAMOS | 840 05 |
| SERIFOPOULA ISLE | 840 05 |
| SERIFOS | 840 05 |
| SIKAMIA | 840 05 |
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