For over sixty years, no more cities were added, but the vast demographic shift during the last part of the nineteenth century made it impossible to leave the arrangements unchanged. Thus, on 29 May 1906, Esch-sur-Alzette was promoted; Esch was followed by Differdange, Dudelange, Ettelbruck, and Rumelange on 4 August 1907. An area of the (now extinct) commune of Hollerich was conferred the title on 7 April 1914, under the title of 'Hollerich-Bonnevoie'; this status was lost when Hollerich was merged into Luxembourg City on 26 March 1920.
The last such statute affecting city status in Luxembourg was the Loi communale du 13 décembre 1988. In the order outlined in that legislation (i.e. alphabetical, except with Luxembourg City first), the twelve communes with city status are: Luxembourg City, Diekirch, Differdange, Dudelange, Echternach, Esch-sur-Alzette, Ettelbruck, Grevenmacher, Remich, Rumelange, Vianden, and Wiltz.
| Name | Canton | District | Area (km²) | Population (2005) | Date of law | |
|---|---|---|---|---|---|---|
| Diekirch Dikrech | Diekirch | Diekirch | 12.42 | 6,165 | 24 February 1843 | |
| Differdange Déifferdeng | Esch-sur-Alzette | Luxembourg | 22.18 | 19,005 | 4 August 1907 | |
| Dudelange Diddeleng | Esch-sur-Alzette | Luxembourg | 21.38 | 17,618 | 4 August 1907 | |
| Echternach Iechternach | Echternach | Grevenmacher | 20.49 | 4,507 | 24 February 1843 | |
| Esch-sur-Alzette Esch-Uelzecht | Esch-sur-Alzette | Luxembourg | 14.35 | 28,000 | 29 May 1906 | |
| Ettelbruck Ettelbréck | Diekirch | Diekirch | 15.18 | 7,364 | 4 August 1907 | |
| Grevenmacher Gréiwemaacher | Grevenmacher | Grevenmacher | 16.48 | 3,966 | 24 February 1843 | |
| Luxembourg City Lëtzebuerg | Luxembourg | Luxembourg | 51.46 | 76,420 | 24 February 1843 | |
| Remich Réimech | Remich | Grevenmacher | 5.29 | 2,986 | 24 February 1843 | |
| Rumelange Rëmeleng | Esch-sur-Alzette | Luxembourg | 6.83 | 4,495 | 4 August 1907 | |
| Vianden Veianen | Vianden | Diekirch | 9.67 | 1,561 | 24 February 1843 | |
| Wiltz Wolz | Wiltz | Diekirch | 19.37 | 4,587 | 24 February 1843 |