| # | Village / Locality | Post Office | PIN Code | Sub District | Type |
|---|---|---|---|---|---|
| 51 | Alathurai | Alathur BO | 📍 604408 | Cheyyar | Branch Post Office |
| 52 | Alinjalpattu | Sozhavaram BO | 📍 631701 | Cheyyar | Branch Post Office |
| 53 | Alividithangi | Alividaithangi BO | 📍 604402 | Cheyyar | Branch Post Office |
| 54 | Aliyur | Matam BO | 📍 604502 | Vandavasi | Branch Post Office |
| 55 | Allappanur | Thenmudiyanur BO | 📍 606707 | Chengam | Branch Post Office |
| 56 | Alliandal | Padiagraharam BO | 📍 606705 | Chengam | Branch Post Office |
| 57 | Allikondapattu | Allikondapattu BO | 📍 606811 | Tiruvannamalai | Post Office - PO |
| 58 | Alliputhur | Melachery BO | 📍 604502 | Vandavasi | Branch Post Office |
| 59 | Alliyabad | Kalambur SO | 📍 606903 | Polur | Post Office - PO |
| 60 | Alliyalamangalam R F | Allialamangalam BO | 📍 606904 | Polur | Branch Post Office |
| 61 | Alliyalmangalam | Allialamangalam BO | 📍 606904 | Polur | Branch Post Office |
| 62 | Alliyandal | Alliyandal BO | 📍 604503 | Vandavasi | Branch Post Office |
| 63 | Alwarpettai | Melathangal BO | 📍 606807 | Vandavasi | Branch Post Office |
| 64 | Amananthangal | Avaniapuram BO | 📍 604504 | Vandavasi | Branch Post Office |
| 65 | Amangalodai | Mangalam SO Tiruvannamalai | 📍 606752 | Tiruvannamalai | Post Office - PO |
| 66 | Amantha Puthur | Tandarampattu SO | 📍 606707 | Chengam | Post Office - PO |
| 67 | Amaravathi | Palayanur BO | 📍 606811 | Tiruvannamalai | Post Office - PO |
| 68 | Amattan Kollai | Pattaraikadu B.O | 📍 635703 | Polur | Branch Post Office |
| 69 | Ambavaram | Vilvarani SO | 📍 606906 | Polur | Post Office - PO |
| 70 | Ambedkar Nagar | Jamanamarathur S.O | 📍 635703 | Polur | Post Office - PO |
| 71 | Amirdee | Amirdhi BO | 📍 632102 | Polur | Branch Post Office |
| 72 | Ammaiyapattu | Rattinamangalam BO | 📍 632316 | Arani | Branch Post Office |
| 73 | Amman Nagar | Kolakudi BO | 📍 606808 | Tiruvannamalai | Branch Post Office |
| 74 | Ammanambakkam | Velliambakkam BO | 📍 604403 | Vandavasi | Branch Post Office |
| 75 | Ammapalayam | Sengadu BO | 📍 604505 | Cheyyar | Branch Post Office |
| 76 | Ammapalayam | Eraiyur BO | 📍 606704 | Chengam | Branch Post Office |
| 77 | Ammiyandal | Karapattu BO | 📍 606705 | Chengam | Branch Post Office |
| 78 | Amudur | Amudur BO | 📍 604405 | Vandavasi | Branch Post Office |
| 79 | Anadimangalam | Semmambadi BO | 📍 632313 | Vandavasi | Branch Post Office |
| 80 | Anaibogi | Vallam Arni SO | 📍 604505 | Vandavasi | Post Office - PO |
| 81 | Anaikattu | Chinnaimpettai BO | 📍 606708 | Chengam | Branch Post Office |
| 82 | Anaipettai | Kalvasal BO | 📍 606903 | Polur | Branch Post Office |
| 83 | Anaivady | Kalur BO | 📍 606751 | Polur | Branch Post Office |
| 84 | Anakkavoor | Anukkavoor SO | 📍 604401 | Cheyyar | Post Office - PO |
| 85 | Anandavadi | Arasankanni BO | 📍 606703 | Chengam | Branch Post Office |
| 86 | Ananthapuram | Gudalur BO | 📍 606907 | Polur | Branch Post Office |
| 87 | Ananthapuram | Ananthapuram BO | 📍 632315 | Polur | Branch Post Office |
| 88 | Anapathur | Anapathur BO | 📍 604401 | Cheyyar | Branch Post Office |
| 89 | Anapurandan | Pandithapattu BO | 📍 606603 | Tiruvannamalai | Branch Post Office |
| 90 | Andalur | Saduperipalayam BO | 📍 606907 | Polur | Branch Post Office |
| 91 | Andampallam | Andampallam BO | 📍 606804 | Tiruvannamalai | Branch Post Office |
| 92 | Andanur | Pakkiripalayam BO | 📍 606709 | Chengam | Branch Post Office |
| 93 | Andapattu | Su. Andapattu BO | 📍 606808 | Tiruvannamalai | Branch Post Office |
| 94 | Andapettai | Kariamangalam BO | 📍 606709 | Chengam | Branch Post Office |
| 95 | Andi kotta | Pelasur BO | 📍 606803 | Polur | Branch Post Office |
| 96 | Andipalayam | Kuppam BO | 📍 632311 | Arani | Branch Post Office |
| 97 | Andipalayam | Vazhiyur BO | 📍 632315 | Polur | Branch Post Office |
| 98 | Andipatti | Andipattu BO | 📍 606703 | Chengam | Branch Post Office |
| 99 | Andipuravadai | Melachery BO | 📍 604502 | Vandavasi | Branch Post Office |
| 100 | Andithangal | Erumbur BO | 📍 604404 | Vandavasi | Branch Post Office |