| Value | Category |
|---|---|
| 00 | Speaks only one language |
| 01 | Afrikaans |
| 02 | English |
| 03 | IsiNdebele |
| 04 | IsiXhosa |
| 05 | IsiZulu |
| 06 | Sepedi |
| 07 | Sesotho |
| 08 | Setswana |
| 09 | Siswati |
| 10 | Tshivenda |
| 11 | Xitsonga |
| 12 | Dutch |
| 13 | German |
| 14 | Greek |
| 15 | Italian |
| 16 | Portuguese |
| 17 | French |
| 18 | Tamil |
| 19 | Hindi |
| 20 | Telugu |
| 21 | Gujarati |
| 22 | Urdu |
| 23 | Chinese |
| 24 | Swahili |
| 25 | Shona |
| 26 | Arabic |
| 27 | Sign language |
| 28 | Other |
| 98 | Unknown |
| 99 | NIU (not in universe) |