There are 12 post offices under PIN code 643102.
| Post Office | Office Type | Delivery Status | Taluk | District | Division | Region | State | Circle | |
|---|---|---|---|---|---|---|---|---|---|
| 1 | Adderly B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 2 | Burliar B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 3 | Coonoor Bazaar S.O | Sub Office | Non-Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 4 | Coonoor RS S.O | Sub Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 5 | Gurrency B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 6 | Hillgrove B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 7 | Hulical B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 8 | Karumbalam B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 9 | Katary R.S. B.O | Branch Office | Non-Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 10 | Sogathorai B.O | Branch Office | Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 11 | St Josephs College B.O | Branch Office | Non-Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |
| 12 | Vannarpet B.O | Branch Office | Non-Delivery | Coonoor | Nilgiris | Nilgiris | Coimbatore | Tamil Nadu | Tamilnadu |