| Postal Code information | |
|---|---|
| Place | Kohtla-Järve |
| Post Code | 30221, 30222, 30321, 30322, 30323, 30324, 30325, 30326, 30327, 30328, 30621, 30721, 30722, 31021, 31022, 31023, 31024, 31025, 31026, 31027, 31221, 32101 |
| County | Kohtla-Järve |
| State | Ida-Viru |
| Time zone | Europe/Tallinn |