RTO Code of Kerala
| Thiruvananthapuram | KL01 |
| Kollam | KL02 |
| Pathanamthitta | KL03 |
| Alappuzha | KL04 |
| Kottayam | KL05 |
| Idukki | KL06 |
| Ernakulam | KL07 |
| Thrissur | KL08 |
| Palakkad | KL09 |
| Malappuram | KL10 |
| Kozhikode | KL11 |
| Wayanad | KL12 |
| Kannur | KL13 |
| Kasargode | KL14 |
| Kerala | KL15 |
| Attingal | KL16 |
| Muvattupuzha | KL17 |
| Vadakara | KL18 |
| Parassala | KL19 |
| Neyyattinkara | KL20 |
| Nedumangad | KL21 |
| Kazhakkoottam | KL22 |
| Karunagapally | KL23 |
| Kottarakara | KL24 |
| Punalur | KL25 |
| Adoor | KL26 |
| Thiruvalla | KL27 |
| Mallappally | KL28 |
| Kayamkulam | KL29 |
| Chengannur | KL30 |
| Mavelikara | KL31 |
| Cherthala | KL32 |
| Changanassery | KL33 |
| Kanjirappally | KL34 |
| Pala | KL35 |
| Vaikom | KL36 |
| Vandiperiyar | KL37 |
| Thodupuzha | KL38 |
| Thripunithura | KL39 |
| Perumbavoor | KL40 |
| Aluva | KL41 |
| North Paravur | KL42 |
| Mattancherry | KL43 |
| Kothamangalam | KL44 |
| Irinjalakuda | KL45 |
| Guruvayur | KL46 |
| Kodungallur | KL47 |
| Wadakkancherry | KL48 |
| Alathur | KL49 |
| Mannarghat | KL50 |
| Ottappalam | KL51 |
| Pattambi | KL52 |
| Perinthalmanna | KL53 |
| Ponnani | KL54 |
| Tirur | KL55 |
| Koyilandi | KL56 |
| Koduvally | KL57 |
| Thalassery | KL58 |
| Taliparamba | KL59 |
| Kanhangad | KL60 |
| Kunnathur | KL61 |
| Ranni | KL62 |
| Angamaly | KL63 |
| Chalakkudy | KL64 |
| Thirurangadi | KL65 |
| Kuttanadu | KL66 |
| Uzhavoor | KL67 |
| Devikulam | KL68 |
| Udumbanchola | KL69 |