Post offices and branch post offices present in Chennai district of Tamil Nadu state. There are 112 Post Offices located in the district. List of Pin code of all the places in Chennai is listed below.
| Post Office | Taluk | District | PIN Code |
|---|---|---|---|
| Adyar S.O (Chennai) | Chennai City Corporation | Chennai | 600020 |
| Agaram S.O | Perambur Purasawalkam | Chennai | 600082 |
| Aminjikarai S.O | Egmore Nungambakkam | Chennai | 600030 |
| Anna Nagar East S.O | Perambur Purasawalkam | Chennai | 600102 |
| Anna Nagar S.O (Chennai) | Egmore Nungambakkam | Chennai | 600040 |
| Anna Nagar Western Extn S.O | Ambattur | Chennai | 600101 |
| Anna Road H.O | Chennai | Chennai | 600002 |
| Arumbakkam S.O | Maduravoyal | Chennai | 600106 |
| Ashoknagar S.O (Chennai) | Chennai City Corporation | Chennai | 600083 |
| Aynavaram S.O | Perambur Purasawalkam | Chennai | 600023 |
| Besantnagar S.O | Chennai City Corporation | Chennai | 600090 |
| Chennai G.P.O. | Chennai | Chennai | 600001 |
| Chepauk S.O | Chennai | Chennai | 600005 |
| Chetput S.O | Egmore Nungambakkam | Chennai | 600031 |
| Chintadripet S.O | Chennai | Chennai | 600002 |
| Choolaimedu S.O | Chennai | Chennai | 600094 |
| D G Vaishnav College S.O | Egmore Nungambakkam | Chennai | 600106 |
| Edapalayam S.O | Tondiarpet Fort St George | Chennai | 600003 |
| Egmore ND S.O | NA | Chennai | 600008 |
| Egmore S.O | NA | Chennai | 600008 |
| Ekkaduthangal S.O | Chennai City Corporation | Chennai | 600032 |
| Engineering College S.O (Chennai) | Chennai City Corporation | Chennai | 600025 |
| Erukkancheri B.O | Chennai | Chennai | 600118 |
| Ethiraj Salai S.O | Egmore Nungambakka | Chennai | 600008 |
| Flower Bazaar S.O | NA | Chennai | 600001 |
| Flowers Road S.O | Perambur Purasawalkam | Chennai | 600084 |
| Fort St George S.O | Tondiarpet Fort St George | Chennai | 600009 |
| G K M Colony S.O | Perambur Purawalkam | Chennai | 600082 |
| Gopalapuram S.O (Chennai) | Chennai | Chennai | 600086 |
| Govt Stanley Hospital S.O | Tondiarpet Fort St George | Chennai | 600001 |
| Greams Road S.O | Chennai | Chennai | 600006 |
| Guindy Industrial Estate S.O | Chennai City Corporation | Chennai | 600032 |
| Guindy North S.O | Chennai City Corporation | Chennai | 600015 |
| High Court Building S.O (Chennai) | Tondiarpet Fort St George | Chennai | 600104 |
| Hindi Prachar Sabha S.O | Chennai | Chennai | 600017 |
| Icf Colony S.O | Perambur Purasawalkam | Chennai | 600038 |
| Indian Institute Of Technology S.O | Chennai City Corporation | Chennai | 600036 |
| Jafferkhanpet S.O | Chennai City Corporation | Chennai | 600083 |
| Jawahar Nagar S.O (Chennai) | Perambur Purasawalkam | Chennai | 600082 |
| Kalaignar Karunanidhi Nagar S.O | Chennai City Corporation | Chennai | 600078 |
| Kasturibai Nagar S.O | Chennai City Corporation | Chennai | 600020 |
| Kilpauk Medical College S.O | Perambur Purasawalkam | Chennai | 600010 |
| Kilpauk S.O | Perambur Purasawalkam | Chennai | 600010 |
| Kodambakkam S.O | Chennai City Corporation | Chennai | 600024 |
| Kodungaiyur S.O | Chennai City | Chennai | 600118 |
| Kotturpuram S.O | Chennai City Corporation | Chennai | 600085 |
| Koyambedu S.O | Maduravoyal | Chennai | 600107 |
| Koyambedu Wholesale Market Com S.O | Chennai City Corporation | Chennai | 600092 |
| Kumaran Nagar S.O | NA | Chennai | 600082 |
| Lloyds Estate S.O | Chennai | Chennai | 600014 |
| Loyola College S.O | Chennai | Chennai | 600034 |
| Madras Electricity System S.O | Chennai | Chennai | 600002 |
| Madras Medical College S.O | Tondiarpet Fort St George | Chennai | 600003 |
| Madras University S.O | Chennai | Chennai | 600005 |
| Mambalam R.S. S.O | Chennai City Corporation | Chennai | 600033 |
| Mandaveli S.O | Chennai | Chennai | 600004 |
| Mannady S.O (Chennai) | Tondiarpet Fort St George | Chennai | 600001 |
| Medavakkam Tank Road S.O | Perambur Purasawalkam | Chennai | 600010 |
| Mint Building S.O | Tondiarpet Fort St George | Chennai | 600001 |
| MPT AO S.O | Tondiarpet Fort St Goerge | Chennai | 600001 |
| Mylapore H.O | Chennai | Chennai | 600004 |
| Nandanam S.O | Chennai City Corporation | Chennai | 600035 |
| Nungambakkam High Road S.O | Chennai | Chennai | 600034 |
| Nungambakkam S.O | Chennai | Chennai | 600034 |
| Old College Buildings S.O | Chennai | Chennai | 600006 |
| Park Town H.O | Tondiarpet Fort St George | Chennai | 600003 |
| Perambur Barracks S.O | Perambur Purasawalkam | Chennai | 600012 |
| Perambur North S.O | Perambur Purasawalkam | Chennai | 600011 |
| Perambur S.O | Perambur Purasawalkam | Chennai | 600011 |
| Pr. Accountant General S.O | Chennai | Chennai | 600018 |
| Puliyanthope S.O | Perambur Purasawalkam | Chennai | 600012 |
| Raja Annamalaipuram S.O | Chennai City Corporation | Chennai | 600028 |
| Rajaji Bhavan S.O | Chennai City Corporation | Chennai | 600090 |
| Rajbhavan S.O (Chennai) | Chennai City Corporation | Chennai | 600022 |
| Ramakrishna Nagar S.O (Chennai) | Chennai City Corporation | Chennai | 600028 |
| Rayapuram S.O | Egmore Nungambakkam | Chennai | 600013 |
| Ripon Buildings S.O | Tondiarpet Fort St George | Chennai | 600003 |
| Royapettah S.O | Chennai | Chennai | 600014 |
| Rv Nagar B.O | Chennai | Chennai | 600118 |
| Saidapet S.O (Chennai) | Chennai City Corporation | Chennai | 600015 |
| Saligramam S.O | Chennai City Corporation | Chennai | 600093 |
| Sembiam S.O | Perambur Purasawalkam | Chennai | 600011 |
| Shastri Bhavan S.O | Chennai | Chennai | 600006 |
| Shastri Nagar S.O (Chennai) | Chennai City Corporation | Chennai | 600020 |
| Shenoy Nagar S.O | Egmore Nungambakkam | Chennai | 600030 |
| Sowcarpet S.O | Tondiarpet Fort St George | Chennai | 600001 |
| Teynampet S.O | Chennai | Chennai | 600018 |
| Teynampet West S.O | Chennai | Chennai | 600006 |
| Thygarayanagar H.O | Chennai | Chennai | 600017 |
| Thygarayanagar North ND S.O | Chennai | Chennai | 600017 |
| Thygarayanagar South NDS.O | Chennai | Chennai | 600017 |
| Tidel Park S.O | Mambalam | Chennai | 600113 |
| Tiruvallikkeni S.O | Chennai | Chennai | 600005 |
| Tiruvanmiyur S.O | Chennai City Corporation | Chennai | 600041 |
| Tondiarpet Bazaar S.O | Tondiarpet Fort St George | Chennai | 600081 |
| Tondiarpet S.O | Tondiarpet Fort St George | Chennai | 600081 |
| Tondiarpet West S.O | Tondiarpet Fort St George | Chennai | 600081 |
| Triplicane South S.O | Chennai | Chennai | 600014 |
| TTTI Taramani S.O | Chennai City Corporation | Chennai | 600113 |
| Vadapalani S.O | Chennai City Corporation | Chennai | 600026 |
| Valmiki Nagar S.O | Mylapore - Triplicane | Chennai | 600041 |
| Velacheri S.O | Chennai City Corporation | Chennai | 600042 |
| Venkatesapuram S.O | Perambur Purasawalkam | Chennai | 600012 |
| Vepery S.O | Perambur Purasawalkam | Chennai | 600007 |
| Virugambakkam S.O | Chennai City Corporation | Chennai | 600092 |
| Vivekananda College Madras S.O | Chennai | Chennai | 600004 |
| Vyasar Nagar Colony S.O | Tondiarpet Fort St George | Chennai | 600039 |
| Vyasarpadi S.O | Tondiarpet Fort St George | Chennai | 600039 |
| Washermanpet East S.O | Tondiarpet Fort St George | Chennai | 600021 |
| Washermanpet S.O | Tondiarpet Fort St George | Chennai | 600021 |
| West Mambalam S.O | Chennai City Corporation | Chennai | 600033 |
| World University Centre S.O | Egmore Nungambakkm | Chennai | 600031 |