| Code | Name | Region |
|---|---|---|
| PLKLO | Klodzko | |
| PLKNW | Klonowa | 10 |
| PLKLU | Kluczbork | |
| PLKLZ | Klucze | 12 |
| PLKL9 | Kluczkowice | 6 |
| PLKAR | Kazmierz | 30 |
| PLKYA | Kcynia | 4 |
| PLOZX | Kedrzyno | 32 |
| PLKEK | Kedzierzyn-kozle | |
| PLKPC | Kepice | 22 |
| PLKEP | Kepno | 30 |
| PLKEZ | Ketrzyn | 28 |
| PLKET | Ketrzyn | 28 |
| PLKTY | Kety | |
| PLKKR | Kiekrz | WP |
| PLKLC | Kielce | |
| PLKSW | Kielcze Stare | |
| PLKIL | Kielczow | 2 |
| PLKIC | Kielczyglow | 10 |
| PLKEN | Kielno | 22 |
| PLKLP | Kielpino | 22 |
| PLKIZ | Kietrz | 16 |
| PLKTR | Kietrz | 16 |
| PLKIK | Kijewo Krolewskie | 4 |
| PLKIJ | Kijow | 16 |
| PLKNM | Kanie | MZ |
| PLKIW | Kaniow | 24 |
| PLKAP | Kapino | PM |
| PLKCW | Karczew | 14 |
| PLOZU | Karczew | LD |
| PLOZF | Kargowa | LB |
| PLKAJ | Karlikowo | 22 |
| PLKNQ | Karlino | |
| PLKWE | Karlowice | 30 |
| PLKNI | Karnice | 32 |
| PLKPK | Karpicko | 30 |
| PLSJK | Karsibor | 32 |
| PLKTZ | Kartuzy | |
| PLKTW | Katowice | |
| PLKYW | Katy Wroclawskie | 2 |
| PLKWC | Kawcze | PM |
| PLKAZ | Kazimierz | 10 |
| PLZBP | Kazimierz Biskupi | 30 |
| PLK2D | Kazimierz Dolny | 6 |
| PLKWZ | Kazimierza Wielka | 12 |
| PLKAC | Kaczyce | 24 |
| PLKLT | Kalety | 24 |
| PLKAK | Kaliska Kosierskie | 22 |
| PLKAL | Kalisz | |
| PLKU3 | Kaluszyn | 14 |