| Area Code▲ | City↕ | Administrative Region↕ | City Population↕ | Country/Region | Timezone |
|---|
| 22 | Freetown | Western Area | 802,639 | Sierra Leone | Africa/Freetown |
| 25 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 30 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 32 | Bo, Sierra Leone | Southern Province, Sierra Leone | 174,354 | Sierra Leone | Africa/Freetown |
| 33 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 44 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 52 | Makeni | Northern Province, Sierra Leone | 87,679 | Sierra Leone | Africa/Freetown |
| 55 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 56 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 76 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 77 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 78 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |
| 88 | — | — | 5,245,695 | Sierra Leone | Africa/Freetown |