| Wasquehal Cedex (59445) | - | - |
| Watten (59143) | - | - |
| Wattignies (59139) | - | - |
| Wattignies La Victoire (59680) | - | - |
| Wattrelos (59150) | - | - |
| Wattrelos Cedex (59391) | - | - |
| Wattrelos Cedex (59392) | - | - |
| Wattrelos Cedex (59393) | - | - |
| Wattrelos Cedex (59394) | - | - |
| Wattrelos Cedex (59395) | - | - |
| Wattrelos Cedex (59396) | - | - |
| Wattrelos Cedex (59397) | - | - |
| Wattrelos Cedex (59398) | - | - |
| Wattrelos Cedex (59399) | - | - |
| Wavrechain Sous Denain (59220) | - | - |
| Wavrechain Sous Faulx (59111) | - | - |
| Wavrin (59136) | - | - |
| Waziers (59119) | - | - |
| Wemaers Cappel (59670) | - | - |
| Wervicq Sud (59117) | - | - |
| West Cappel (59380) | - | - |
| Wicres (59134) | - | - |
| Wignehies (59212) | - | - |
| Willems (59780) | - | - |
| Willies (59740) | - | - |
| Winnezeele (59670) | - | - |
| Wormhout (59470) | - | - |
| Wulverdinghe (59143) | - | - |
| Wylder (59380) | - | - |
| Zegerscappel (59470) | - | - |
| Zermezeele (59670) | - | - |
| Zuydcoote (59123) | - | - |
| Zuytpeene (59670) | - | - |