| Joensuu | Pohjois-Karjala | Finland | 53,388 | 80100, 80110, 80130, 80140, 80141, 80160, 80161, 80170, 80200, 80201, 80210, 80220, 80230, 80260, 80330, 80511, 81320, 82110, 82710 |
| Kajaani | Kainuu | Finland | 35,375 | 87100, 87140, 87150, 87200, 87250, 87300, 87400, 87401, 87500, 87600, 87601, 87700, 87800, 87850, 87900, 87930, 88210 |
| Kostomuksha | Republika ng Karelia | Rusya | 30,135 | 186930, 186931, 186932, 186989 |
| Kuopio | Pohjois-Savo | Finland | 89,104 | 70000, 70006, 70010, 70100, 70110, 70111, 70150, 70151, 70200, 70201, 70210, 70211, 70240, 70260, 70280, 70300, 70340, 70400, 70401, 70420, 70421, 70460, 70461, 70500, 70501, 70600, 70601, 70620, 70621, 70700, 70701, 70750, 70780, 70781, 70800, 70820, 70821, 70840, 70870, 70871, 70900, 70910, 70911, 70940, 71130, 71150, 71161, 71330, 71360, 71480, 71490, 71520, 71570, 71610, 71650, 71660, 71670, 71680, 71720, 71730, 71740, 71745, 71801, 71820, 71840, 71850, 71870, 71890, 71950, 72140, 73350, 73360, 73410, 73460, 73470 |
| Oulu | Pohjois-Pohjanmaa | Finland | 128,618 | 90000, 90014, 90015, 90029, 90100, 90120, 90130, 90140, 90150, 90160, 90210, 90220, 90230, 90240, 90250, 90310, 90400, 90410, 90420, 90460, 90461, 90470, 90500, 90508, 90510, 90520, 90530, 90540, 90550, 90551, 90560, 90570, 90580, 90581, 90590, 90600, 90620, 90630, 90650, 90651, 90660, 90670, 90800, 90801, 90810, 90820, 90830, 90831, 90840, 90850, 90860, 90900, 90901, 90910, 90940, 90941, 91200, 91210, 91300, 91310, 91999 |