There are 8 post offices under PIN code 636121.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Kattukottai B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 2 | Manivilundan B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 3 | Sadasivapuram B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 4 | Sarvoy B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 5 | Sathapadi B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 6 | Thenkumarai B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 7 | Vadachennimalai S.O | Sub Office | Delivery | Attur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |
| 8 | Valayamadevi B.O | Branch Office | Delivery | Atur | Salem | Salem East | Coimbatore | Tamil Nadu | Tamilnadu |