| Name | What | Region | Country | Lat | Long | Elev ft. | Pop est |
|---|---|---|---|---|---|---|---|
| Jablonna | city | Poland | 52.37 | 20.93 | 232 | 83299 | |
| Jablonna | city | Poland | 52.12 | 21.33 | 456 | 34977 | |
| Jablonna-Legionowo | city | Poland | 52.40 | 20.93 | 242 | 63019 | |
| Jabłonna | city | Poland | 52.37 | 20.93 | 232 | 83299 | |
| Jabłonna | city | Poland | 52.12 | 21.33 | 456 | 34977 | |
| Jabłonna-Legionowo | city | Poland | 52.40 | 20.93 | 242 | 63019 | |
| Jachranka | city | Poland | 52.48 | 20.98 | 278 | 7135 | |
| Jachronka | city | Poland | 52.48 | 20.98 | 278 | 7135 | |
| Jachronka Nowa | city | Poland | 52.48 | 20.98 | 278 | 7135 | |
| Jachronka Stara | city | Poland | 52.48 | 20.98 | 278 | 7135 | |
| Janczewice | city | Poland | 52.10 | 20.93 | 334 | 25820 | |
| Janków Nowy | city | Poland | 52.37 | 21.18 | 308 | 35310 | |
| Janków Stary | city | Poland | 52.38 | 21.22 | 311 | 37981 | |
| Janowek Drugi | city | Poland | 52.42 | 20.80 | 249 | 9226 | |
| Janowek Pierwszy | city | Poland | 52.43 | 20.80 | 239 | 8790 | |
| Janowo | city | Poland | 52.48 | 20.63 | 265 | 15342 | |
| Janów | city | Poland | 52.05 | 21.28 | 288 | 24935 | |
| Janów | city | Poland | 52.27 | 20.85 | 314 | 90997 | |
| Janów | city | Poland | 52.33 | 20.28 | 206 | 4189 | |
| Janówek | city | Poland | 52.35 | 20.72 | 183 | 5793 | |
| Janówek | city | Poland | 52.43 | 20.80 | 239 | 8790 | |
| Janówek | city | Poland | 52.10 | 21.10 | 282 | 53483 | |
| Jaroszowa Wola | city | Poland | 51.98 | 21.03 | 390 | 10363 | |
| Jastrzebia | city | Poland | 52.07 | 21.08 | 328 | 50426 | |
| Jatne | city | Poland | 52.10 | 21.40 | 475 | 7497 | |
| Jaworowa | city | Poland | 52.13 | 20.95 | 298 | 66557 | |
| Jazgarzew | city | Poland | 52.03 | 21.00 | 377 | 24460 | |
| Jessówka | city | Poland | 52.03 | 21.02 | 400 | 25319 | |
| Jesówka | city | Poland | 52.03 | 21.02 | 400 | 25319 | |
| Jeziorki Niemieckie | city | Poland | 52.12 | 21.02 | 357 | 147426 | |
| Jeziorki Polskie | city | Poland | 52.13 | 20.98 | 298 | 110209 | |
| Jeziorna | city | Poland | 52.10 | 21.13 | 285 | 38230 | |
| Jeziorna Bankowa | city | Poland | 52.10 | 21.13 | 285 | 38230 | |
| Jeziorna Królewska | city | Poland | 52.08 | 21.10 | 318 | 43706 | |
| Jeziorna Obarska | city | Poland | 52.08 | 21.12 | 328 | 34927 | |
| Jeziorna Oborska | city | Poland | 52.08 | 21.12 | 328 | 34927 | |
| Jeziorzany | city | Poland | 51.98 | 20.83 | 456 | 7279 | |
| Jozefin | city | Poland | 52.23 | 21.33 | 403 | 20693 | |
| Jozefoslaw | city | Poland | 52.10 | 21.03 | 311 | 113858 | |
| Jozefow | city | Poland | 52.20 | 20.70 | 242 | 20000 | |
| Jozefow | city | Poland | 52.38 | 21.00 | 219 | 28165 | |
| Jozefow | city | Poland | 52.13 | 21.23 | 298 | 51904 | |
| Julianow | city | Poland | 51.97 | 20.72 | 561 | 4360 | |
| Jurandow | city | Poland | 51.92 | 21.18 | 406 | 8704 | |
| Józefosław | city | Poland | 52.10 | 21.03 | 311 | 113858 |