| name | type | Area (m²) | capital city | Country | continent | population (people) |
|---|---|---|---|---|---|---|
| Eastern | Province | 15,553,000,448 | Sierra Leone | Africa | 1,187,532 | |
| Northern | Province | 35,936,002,048 | Sierra Leone | Africa | 1,718,240 | |
| Southern | Province | 19,694,000,128 | Sierra Leone | Africa | 1,377,067 | |
| Western Area | Province | 557,000,000 | Sierra Leone | Africa | 947,122 |