| population | |
| Allouagne | 2939 |
| Ames | 644 |
| Amettes | 487 |
| Annequin | 2239 |
| Annezin | 5892 |
| Auchel | 10443 |
| Auchy-au-Bois | 491 |
| Auchy-les-Mines | 4667 |
| Bajus | 368 |
| Barlin | 7720 |
| Bethune | 25186 |
| Beugin | 473 |
| Beuvry | 9587 |
| Billy-Berclau | 4562 |
| Blessy | 866 |
| Bourecq | 616 |
| Bruay-la-Buissiere | 22230 |
| Burbure | 2925 |
| Busnes | 1291 |
| Calonne-Ricouart | 5466 |
| Calonne-sur-la-Lys | 1565 |
| Camblain-Chatelain | 1777 |
| Cambrin | 1189 |
| Cauchy-a-la-Tour | 2860 |
| Caucourt | 346 |
| Chocques | 2920 |
| Cuinchy | 1745 |
| Dieval | 753 |
| Divion | 6905 |
| Douvrin | 5286 |
| Drouvin-le-Marais | 584 |
| Ecquedecques | 509 |
| Essars | 1708 |
| Estree-Blanche | 968 |
| Estree-Cauchy | 377 |
| population | |
| Ferfay | 915 |
| Festubert | 1315 |
| Fleurbaix | 2685 |
| Fouquereuil | 1547 |
| Fouquieres-les-Bethune | 1074 |
| Fresnicourt-le-Dolmen | 760 |
| Gauchin-Legal | 322 |
| Givenchy-les-la-Bassee | 1011 |
| Gonnehem | 2549 |
| Gosnay | 946 |
| Guarbecque | 1434 |
| Haillicourt | 4942 |
| Haisnes | 4336 |
| Ham-en-Artois | 1009 |
| Hermin | 212 |
| Hersin-Coupigny | 6236 |
| Hesdigneul-les-Bethune | 824 |
| Hinges | 2478 |
| Houchin | 706 |
| Houdain | 7337 |
| Isbergues | 8946 |
| La Comte | 903 |
| La Couture | 2807 |
| Labeuvriere | 1665 |
| Labourse | 2769 |
| Lambres | 1058 |
| Lapugnoy | 3452 |
| Laventie | 4988 |
| Lespesses | 404 |
| Lestrem | 4487 |
| Lieres | 382 |
| Liettres | 323 |
| Ligny-les-Aire | 613 |
| Lillers | 10058 |
| Linghem | 210 |
| population | |
| Locon | 2399 |
| Lorgies | 1585 |
| Lozinghem | 1281 |
| Maisnil-les-Ruitz | 1655 |
| Marles-les-Mines | 5615 |
| Mazinghem | 477 |
| Mont-Bernanchon | 1363 |
| Neuve-Chapelle | 1439 |
| Norrent-Fontes | 1410 |
| Noyelles-les-Vermelles | 2407 |
| Nœux-les-Mines | 12010 |
| Oblinghem | 372 |
| Ourton | 770 |
| Quernes | 465 |
| Rebreuve-Ranchicourt | 1079 |
| Rely | 455 |
| Richebourg | 2605 |
| Robecq | 1368 |
| Rombly | 50 |
| Ruitz | 1601 |
| Sailly-Labourse | 2295 |
| Sailly-sur-la-Lys | 4019 |
| Saint-Floris | 578 |
| Saint-Hilaire-Cottes | 809 |
| Saint-Venant | 2973 |
| Vaudricourt | 944 |
| Vendin-les-Bethune | 2433 |
| Vermelles | 4718 |
| Verquigneul | 1886 |
| Verquin | 3425 |
| Vieille-Chapelle | 781 |
| Violaines | 3611 |
| Westrehem | 239 |
| Witternesse | 587 |
 | Merville-Calonne Airport | ~ 10.09 km |
| Lille-Lesquin Airport | ~ 35.59 km |
 | Wevelgem Airport | ~ 53.75 km |
| Albert-Bray Airport | ~ 63.19 km |
| Calais-Dunkerque Airport | ~ 64.96 km |
| Le Touquet-Côte d'Opale Airport | ~ 68.21 km |
| Ostend-Bruges International Airport | ~ 76.64 km |
| Paris Beauvais Tillé Airport | ~ 124.83 km |
 | Lydd Airport | ~ 124.91 km |
