| 1968 | Alappuzha | Birth | -3.66 | percent | -1.74 | percent | 3.62 | percent |
| 1968 | Alappuzha | Death | -6.02 | percent | -4.41 | percent | 1.1 | percent |
| 1968 | Ernakulam | Birth | -2.56 | percent | 4.02 | percent | 18.51 | percent |
| 1968 | Ernakulam | Death | -8.34 | percent | -5.51 | percent | 0.07 | percent |
| 1968 | Idukki | Birth | percent | percent | percent | |||
| 1968 | Idukki | Death | percent | percent | percent | |||
| 1968 | Kannur | Birth | 1.45 | percent | -1.05 | percent | -14.77 | percent |
| 1968 | Kannur | Death | -3.33 | percent | -8.66 | percent | -32.19 | percent |
| 1968 | Kasaragod | Birth | percent | percent | percent | |||
| 1968 | Kasaragod | Death | percent | percent | percent |