| Sierra-leone, From Ethnologue |
| Totals by Family |
| Niger-Congo | 4,266,150 |
| Indo-European | 0 |
| Totals by Language |
| Mende | 1,460,000 | Niger-Congo Mande |
| Themne | 1,200,000 | Niger-Congo Atlantic-Congo |
| Krio | 472,600 | |
| Limba, West-Central | 335,000 | Niger-Congo Atlantic-Congo |
| Kuranko | 250,000 | Niger-Congo Mande |
| Kono | 190,000 | Niger-Congo Mande |
| Pular | 178,400 | Niger-Congo Atlantic-Congo |
| Sherbro | 135,000 | Niger-Congo Atlantic-Congo |
| Susu | 120,000 | Niger-Congo Mande |
| Loko | 115,000 | Niger-Congo Mande |
| Maninkakan, Eastern | 90,000 | Niger-Congo Mande |
| Kisi, Southern | 85,000 | Niger-Congo Atlantic-Congo |
| Kissi, Northern | 40,000 | Niger-Congo Atlantic-Congo |
| Yalunka | 30,000 | Niger-Congo Mande |
| Vai | 15,500 | Niger-Congo Mande |
| Gola | 8,000 | Niger-Congo Atlantic-Congo |
| Klao | 8,000 | Niger-Congo Atlantic-Congo |
| Bassa | 5,000 | Niger-Congo Atlantic-Congo |
| Bullom So | 500 | Niger-Congo Atlantic-Congo |
| Krim | 500 | Niger-Congo Atlantic-Congo |
| Bom | 250 | Niger-Congo Atlantic-Congo |
| English | 0 | Indo-European Germanic |
| Limba, East | 0 | Niger-Congo Atlantic-Congo |
| Sierra Leone Sign Language | 0 | |