Thiruvannamalai District Std Codes
| Place | Std Code |
| Alaganandal | 04175 |
| Arni | 04173 |
| Brammadesam | 04182 |
| Chengam | 04188 |
| Chetpet | 04181 |
| Cheyyar | 04182 |
| Desur | 04183 |
| Devikapuram | 04173 |
| Eraiyur | 04188 |
| Hasanamapet | 04182 |
| Jamnamardhur | 04181 |
| Koolamandal | 04181 |
| Kalambur | 04181 |
| Kalasapakkam | 04181 |
| Kalavai | 04173 |
| Kandampalayam | 04181 |
| Kanji | 04188 |
| Kannamangalam | 04173 |
| Kattampoondi | 04175 |
| Kelur | 04181 |
| Kilkodungalur | 04183 |
| Kilkuvalaiveedu | 04183 |
| Kilpennathur | 04175 |
| Kunnathur | 04173 |
| Kuppanatham | 04188 |
| Malaiyur | 04183 |
| Mamandur | 04173 |
| Mangalam | 04175 |
| Melpallipattu | 04188 |
| Munugapattu | 04182 |
| Nadalaganandal | 04175 |
| Narthampoondi | 04175 |
| Nesal | 04173 |
| Onnupuram | 04173 |
| Osur | 04183 |
| Periyakolappalur | 04183 |
| Pernamallur | 04183 |
| Perungulathur | 04188 |
| Polur | 04181 |
| Porkunam | 04175 |
| Pudumallavadi | 04175 |
| Purisai | 04182 |
| Rantham | 04182 |
| S.Pudhupalayam | 04188 |
| Santhavasal | 04181 |
| Sattanur | 04188 |
| Somasipadi | 04175 |
| Thanipadi | 04188 |
| Thanrampattu | 04188 |
| Thellar | 04183 |
| Thiruvannamalai | 04175 |
| Thiruvetripuram | 04182 |
| Vadamathimangalam | 04181 |
| Vakadai | 04182 |
| Vanapuram | 04188 |
| Vembakkam | 04182 |
| Vengikal | 04175 |
| Verraiyur | 04151 |
| Vettavalam | 04175 |
| Vilvarani | 04181 |
| Wandivash | 04183 |