Below you can find useful phone numbers you may need to contact on the island.
| Service | Phone | Location |
| Municipality | 22430-61206 | Chora |
| Municipal Tourism Office | 22430-61412 | Chora |
| Community Clinic | 22430-61222 | Pera Gialos |
| Pharmacy | 22430-61444 | Pera Gialos |
| Port Authority | 22430-61208 | - |
| Police | 22430-61207 | - |
| Postal Office | 22430-61223 | Chora |
| Olympic Air | 22430-61665 | Analipsi |
| Olympic Air (booking office) | 22430-61571 | - |
| Ferry Ticket Office | 22430-61224 | Pera Gialos |
| Narkisseios Public Library | 22430-61083 | Pera Gialos |
| Emporiki Bank | 22430-61635 | Pera Gialos |
| Taxi | 22430-61204 | - |
| National Airport | 22430-61410 | - |
Entrance to the castle is free.