| Code | Name | Region |
|---|---|---|
| PLJEJ | Jejkowice | 24 |
| PLJLE | Jelcz-laskowice | |
| PLJEG | Jelenia Gora | 2 |
| PLJEL | Jelesnia | 24 |
| PLJNK | Jelonek | |
| PLJWP | Janow Podlaski | 20 |
| PLJNO | Janow, Katowice | SL |
| PLJCW | Janowice Wielkie | 2 |
| PLLUU | Janowiec | 6 |
| PLJWI | Janowiec Wielkopolski | 4 |
| PLJWB | Jarnoltowek | 16 |
| PLJON | Jarocin | 30 |
| PLJAR | Jaroslaw | |
| PLIKE | Jarosty | LD |
| PLJRO | Jaroszow | 24 |
| PLJRS | Jaroszowiec | 12 |
| PLJAA | Jasienica | |
| PLJAI | Jasieniec, Grojec | MZ |
| PLJSK | Jasionka | MZ |
| PLJAS | Jaslo | 18 |
| PLJAT | Jastarnia | 22 |
| PLJTW | Jastkow | LU |
| PLJKO | Jastkowice | |
| PLJST | Jastrowie | 30 |
| PLJZB | Jastrzebie Zdroj | |
| PLIBN | Izabelin | |
| PLICK | Izbicko | 16 |
| PLIZK | Izdebnik | 12 |
| PLJ8M | Jablonka | 12 |
| PLJLA | Jablonna | |
| PLJBO | Jablonna | 30 |
| PLOZQ | Jablonna Lacka | MZ |
| PLJBL | Jablonowo Pomorskie | 4 |
| PLJCK | Jackow | 6 |
| PLJAC | Jackowice | 10 |
| PLJOO | Jagatowo | 22 |
| PLJAK | Jaksice | 4 |
| PLJKR | Jaktorow | 14 |
| PLJKU | Jakuszyce | 2 |
| PLJAO | Janikowo | 30 |
| PLJKI | Janki | 14 |
| PLJKW | Jankowice | 14 |
| PLLSI | Jankowo | 28 |
| PLJNW | Janow | SL |
| PLJWL | Janow Lubelski | |
| PLHJK | Hajnowka | |
| PLHAL | Halinow | MZ |
| PLHLM | Halinow Minsk | 14 |
| PLHKW | Harklowa | 18 |
| PLHEL | Hel |