| Le Maisnil (59134) | - | - |
| Le Quesnoy (59530) | - | - |
| Lecelles (59226) | - | - |
| Lecluse (59259) | - | - |
| Lederzeele (59143) | - | - |
| Ledringhem (59470) | - | - |
| Leers (59115) | - | - |
| Leffrinckoucke (59495) | - | - |
| Les Moeres (59122) | - | - |
| Les Rues Des Vignes (59258) | - | - |
| Lesdain (59258) | - | - |
| Lesquin (59810) | - | - |
| Lesquin Cedex (59811) | - | - |
| Lesquin Cedex (59812) | - | - |
| Lesquin Cedex (59813) | - | - |
| Lesquin Cedex (59814) | - | - |
| Lesquin Cedex (59815) | - | - |
| Lesquin Cedex (59816) | - | - |
| Lesquin Cedex (59817) | - | - |
| Lesquin Cedex (59818) | - | - |
| Lesquin Cedex (59819) | - | - |
| Leval (59620) | - | - |
| Lewarde (59287) | - | - |
| Lez Fontaine (59740) | - | - |
| Lezennes (59260) | - | - |
| Liessies (59740) | - | - |
| Lieu St Amand (59111) | - | - |
| Ligny Haucourt (59191) | - | - |
| Lille (59000) | - | - |
| Lille (59800) | - | - |
| Lille Armees (59998) | - | - |
| Lille Cedex (59001) | - | - |
| Lille Cedex (59002) | - | - |
| Lille Cedex (59003) | - | - |
| Lille Cedex (59004) | - | - |
| Lille Cedex (59005) | - | - |
| Lille Cedex (59006) | - | - |
| Lille Cedex (59007) | - | - |
| Lille Cedex (59008) | - | - |
| Lille Cedex (59009) | - | - |
| Lille Cedex (59010) | - | - |
| Lille Cedex (59011) | - | - |
| Lille Cedex (59012) | - | - |
| Lille Cedex (59013) | - | - |
| Lille Cedex (59014) | - | - |
| Lille Cedex (59015) | - | - |
| Lille Cedex (59016) | - | - |
| Lille Cedex (59017) | - | - |
| Lille Cedex (59018) | - | - |
| Lille Cedex (59019) | - | - |
| Lille Cedex (59020) | - | - |
| Lille Cedex (59021) | - | - |
| Lille Cedex (59022) | - | - |
| Lille Cedex (59023) | - | - |
| Lille Cedex (59024) | - | - |
| Lille Cedex (59025) | - | - |
| Lille Cedex (59026) | - | - |
| Lille Cedex (59027) | - | - |
| Lille Cedex (59028) | - | - |
| Lille Cedex (59029) | - | - |
| Lille Cedex (59030) | - | - |
| Lille Cedex (59031) | - | - |
| Lille Cedex (59032) | - | - |
| Lille Cedex (59033) | - | - |
| Lille Cedex (59034) | - | - |
| Lille Cedex (59035) | - | - |
| Lille Cedex (59036) | - | - |
| Lille Cedex (59037) | - | - |
| Lille Cedex (59038) | - | - |
| Lille Cedex (59039) | - | - |
| Lille Cedex (59040) | - | - |
| Lille Cedex (59041) | - | - |
| Lille Cedex (59042) | - | - |
| Lille Cedex (59043) | - | - |
| Lille Cedex (59044) | - | - |
| Lille Cedex (59045) | - | - |
| Lille Cedex (59046) | - | - |
| Lille Cedex (59047) | - | - |
| Lille Cedex (59048) | - | - |
| Lille Cedex (59049) | - | - |
| Lille Cedex (59851) | - | - |
| Lille Cedex (59852) | - | - |
| Lille Cedex (59853) | - | - |
| Lille Cedex (59854) | - | - |
| Lille Cedex (59855) | - | - |
| Lille Cedex (59856) | - | - |
| Lille Cedex (59857) | - | - |
| Lille Cedex (59858) | - | - |
| Lille Cedex (59859) | - | - |
| Lille Cheques (59900) | - | - |
| Limont Fontaine (59330) | - | - |
| Linselles (59126) | - | - |
| Locquignol (59530) | - | - |
| Loffre (59182) | - | - |
| Lomme (59160) | - | - |
| Lomme Cedex (59461) | - | - |
| Lomme Cedex (59462) | - | - |
| Lomme Cedex (59463) | - | - |
| Lomme Cedex (59464) | - | - |
| Lomme Cedex (59465) | - | - |