1,574 cities and towns
| Abbreviation | 32 |
| State Population | 5,506,424 |
| # | City | Population | Median Income | Home Value | Median Rent | Median Age |
|---|---|---|---|---|---|---|
| 1 | Lille | 238,695 | N/A | N/A | N/A | 42.3 |
| 2 | Amiens | 143,086 | N/A | N/A | N/A | 42.3 |
| 3 | Roubaix | 99,507 | N/A | N/A | N/A | 42.3 |
| 4 | Tourcoing | 99,160 | N/A | N/A | N/A | 42.3 |
| 5 | Calais | 74,433 | N/A | N/A | N/A | 42.3 |
| 6 | Dunkerque | 71,287 | N/A | N/A | N/A | 42.3 |
| 7 | Villeneuve-d'Ascq | 62,400 | N/A | N/A | N/A | 42.3 |
| 8 | Saint-Quentin | 55,407 | N/A | N/A | N/A | 42.3 |
| 9 | Beauvais | 53,393 | N/A | N/A | N/A | 42.3 |
| 10 | Arras | 47,052 | N/A | N/A | N/A | 42.3 |
| 11 | Boulogne-sur-Mer | 47,013 | N/A | N/A | N/A | 42.3 |
| 12 | Douai | 46,531 | N/A | N/A | N/A | 42.3 |
| 13 | Valenciennes | 44,821 | N/A | N/A | N/A | 42.3 |
| 14 | Compiègne | 44,243 | N/A | N/A | N/A | 42.3 |
| 15 | Wattrelos | 42,826 | N/A | N/A | N/A | 42.3 |
| 16 | Marcq-en-Barœul | 38,629 | N/A | N/A | N/A | 42.3 |
| 17 | Lens | 38,265 | N/A | N/A | N/A | 42.3 |
| 18 | Cambrai | 36,492 | N/A | N/A | N/A | 42.3 |
| 19 | Liévin | 34,370 | N/A | N/A | N/A | 42.3 |
| 20 | Maubeuge | 33,684 | N/A | N/A | N/A | 42.3 |
| 21 | Creil | 31,863 | N/A | N/A | N/A | 42.3 |
| 22 | Béthune | 31,568 | N/A | N/A | N/A | 42.3 |
| 23 | Soissons | 31,100 | N/A | N/A | N/A | 42.3 |
| 24 | Lomme | 29,892 | N/A | N/A | N/A | 42.3 |
| 25 | Laon | 28,688 | N/A | N/A | N/A | 42.3 |
| 26 | Lambersart | 28,613 | N/A | N/A | N/A | 42.3 |
| 27 | Armentières | 26,646 | N/A | N/A | N/A | 42.3 |
| 28 | Abbeville | 26,461 | N/A | N/A | N/A | 42.3 |
| 29 | Hénin-Beaumont | 25,371 | N/A | N/A | N/A | 42.3 |
| 30 | Coudekerque-Branche | 25,201 | N/A | N/A | N/A | 42.3 |
| 31 | Bruay-la-Buissière | 24,474 | N/A | N/A | N/A | 42.3 |
| 32 | Saint-Pol-sur-Mer | 23,635 | N/A | N/A | N/A | 42.3 |
| 33 | La Madeleine | 23,572 | N/A | N/A | N/A | 42.3 |
| 34 | Hazebrouck | 23,307 | N/A | N/A | N/A | 42.3 |
| 35 | Grande-Synthe | 23,213 | N/A | N/A | N/A | 42.3 |
| 36 | Mons-en-Barœul | 23,006 | N/A | N/A | N/A | 42.3 |
| 37 | Loos | 22,107 | N/A | N/A | N/A | 42.3 |
| 38 | Denain | 21,412 | N/A | N/A | N/A | 42.3 |
| 39 | Croix | 21,361 | N/A | N/A | N/A | 42.3 |
| 40 | Halluin | 20,171 | N/A | N/A | N/A | 42.3 |
| 41 | Hem | 19,699 | N/A | N/A | N/A | 42.3 |
| 42 | Nogent-sur-Oise | 19,690 | N/A | N/A | N/A | 42.3 |
| 43 | Wasquehal | 19,320 | N/A | N/A | N/A | 42.3 |
| 44 | Senlis | 19,160 | N/A | N/A | N/A | 42.3 |
| 45 | Carvin | 18,561 | N/A | N/A | N/A | 42.3 |
| 46 | Avion | 18,470 | N/A | N/A | N/A | 42.3 |
| 47 | Ronchin | 18,331 | N/A | N/A | N/A | 42.3 |
| 48 | Saint-Omer | 18,250 | N/A | N/A | N/A | 42.3 |
| 49 | Saint-Amand-les-Eaux | 17,808 | N/A | N/A | N/A | 42.3 |
| 50 | Sin-le-Noble | 17,682 | N/A | N/A | N/A | 42.3 |