| Kernowek | cor-000 |
| Konteth Jefferson | |
| বিষ্ণুপ্রিয়া মণিপুরী ভাষা | bpy-000 | জেফারশন কাউন্টি |
| 國語 | cmn-001 | 傑佛遜縣 |
| Deutsch | deu-000 | Jefferson County |
| English | eng-000 | Jefferson County |
| Esperanto | epo-000 | Jefferson County |
| français | fra-000 | Comté de Jefferson |
| íslenska | isl-000 | Jefferson County |
| italiano | ita-000 | Contea di Jefferson |
| lengua lumbarda | lmo-000 | Jefferson County |
| Plattdüütsch | nds-000 | Jefferson County |
| Nederlands | nld-000 | Jefferson County |
| bokmål | nob-000 | Jefferson County i Pennsylvania |
| bokmål | nob-000 | Jefferson County i Vest-Virginia |
| Pennsilfaanisch Deitsch | pdc-000 | Jefferson Kaundi |
| polski | pol-000 | Hrabstwo Jefferson |
| português | por-000 | Condado de Jefferson |
| svenska | swe-000 | Jefferson County |