| 2005 | Thiruvananthapuram | Birth rate | 16.01 | per 1000 population |
| 2005 | Kollam | Birth rate | 14.55 | per 1000 population |
| 2005 | Pathanamthitta | Birth rate | 15.26 | per 1000 population |
| 2005 | Alappuzha | Birth rate | 12.36 | per 1000 population |
| 2005 | Kottayam | Birth rate | 16.98 | per 1000 population |
| 2005 | Idukki | Birth rate | 15.15 | per 1000 population |
| 2005 | Ernakulam | Birth rate | 15.38 | per 1000 population |
| 2005 | Thrissur | Birth rate | 18.93 | per 1000 population |
| 2005 | Palakkad | Birth rate | 15.76 | per 1000 population |
| 2005 | Malappuram | Birth rate | 22.54 | per 1000 population |