| Clave | Municipio | Población |
|---|---|---|
| 28001 | Abasolo | 9,822 |
| 28002 | Aldama | 28,725 |
| 28003 | Altamira | 269,790 |
| 28004 | Antiguo Morelos | 8,850 |
| 28005 | Burgos | 4,256 |
| 28006 | Bustamante | 7,542 |
| 28007 | Camargo | 16,546 |
| 28008 | Casas | 4,143 |
| 28009 | Ciudad Madero | 205,933 |
| 28010 | Cruillas | 1,671 |
| 28011 | Gómez Farías | 8,288 |
| 28012 | González | 41,470 |
| 28013 | Güémez | 15,032 |
| 28014 | Guerrero | 3,803 |
| 28015 | Gustavo Díaz Ordaz | 15,677 |
| 28016 | Hidalgo | 17,012 |
| 28017 | Jaumave | 15,994 |
| 28018 | Jiménez | 6,375 |
| 28019 | Llera | 14,645 |
| 28020 | Mainero | 2,048 |
| 28021 | El Mante | 106,144 |
| 28022 | Matamoros | 541,979 |
| 28023 | Méndez | 4,280 |
| 28024 | Mier | 6,385 |
| 28025 | Miguel Alemán | 26,237 |
| 28026 | Miquihuana | 3,704 |
| 28027 | Nuevo Laredo | 425,058 |
| 28028 | Nuevo Morelos | 3,810 |
| 28029 | Ocampo | 13,190 |
| 28030 | Padilla | 13,618 |
| 28031 | Palmillas | 1,917 |
| 28032 | Reynosa | 704,767 |
| 28033 | Río Bravo | 132,484 |
| 28034 | San Carlos | 7,411 |
| 28035 | San Fernando | 51,405 |
| 28036 | San Nicolás | 926 |
| 28037 | Soto la Marina | 23,673 |
| 28038 | Tampico | 297,562 |
| 28039 | Tula | 28,230 |
| 28040 | Valle Hermoso | 60,055 |
| 28041 | Victoria | 349,688 |
| 28042 | Villagrán | 5,361 |
| 28043 | Xicoténcatl | 22,229 |