| Area | Pin Code |
| Chennai GPO |
600001 |
| Anna Road GPO |
600002 |
| Park Town |
600003 |
| Mylapore |
600004 |
| Triplicane |
600005 |
| Greams Road |
600006 |
| Vepery |
600007 |
| Egmore |
600008 |
| Fort St George |
600009 |
| Kilpauk, |
600010 |
| Perambur, |
600011 |
| PeramburBar |
600012 |
| Royapuram |
600013 |
| Royapettah |
600014 |
| Saidapet |
600015 |
| St. Thomas |
600016 |
| Thearayanagar |
600017 |
| Teynampet |
600018 |
| Tiruvottiyur |
600019 |
| Adyar |
600020 |
| Washermenpet |
600021 |
| Raj Bhavan |
600022 |
| Ayanavaram |
600023 |
| Kodambakkam |
600024 |
| Engineering College |
600025 |
| Vadapalani |
600026 |
| Meenambakhm |
600027 |
| Raja Annamalaipuram |
600028 |
| Aminjikarai |
600029 |
| Shenoynagar |
600030 |
| Chetput HO |
600031 |
| Industrial Estate Guindy |
600032 |
| West Mambalam |
600033 |
| Nungambakkam |
600034 |
| Nandanam |
600035 |
| Indian Institute of Technology |
600036 |
| Officers' Training Schoo |
600037 |
| ICF Colony |
600038 |
| Vysarpadi |
600039 |
| Annanagar |
600040 |
| Thiruvanmiyur |
600041 |
| Velacheri |
600042 |
| Pallavaram |
600043 |
| Chromepet |
600044 |
| Tambaram HO |
600045 |
| Tambaram IAF |
600046 |
| Tambaram Sanato |
600047 |
| Vandalur |
600048 |
| Villivakkam |
600049 |
| Padi |
600050 |
| Milk Colony |
600051 |
| Red Hills |
600052 |
| Ambatur HO |
600053 |
| Avadi Camp HO |
600054 |
| Avadi IAF |
600055 |
| Poonamallee |
600056 |
| Ennore Thermal |
600057 |
| Indusrial Estate |
600058 |
| Tambaram East |
600059 |
| Madhavaram |
600060 |
| Nanganallur |
600061 |
| Satyamurthinagar |
600062 |
| Srinivasanagar |
600063 |
| Chitlapakkam |
600064 |
| CRP Gmp Avadi |
600065 |
| Pozhal |
600066 |
| Sholavaram |
600067 |
| Manali |
600068 |
| Kunrathur(Kanchi Dt |
600069 |
| Anakaputhur |
600070 |
| Kamarajanagar |
600071 |
| Pattabiram |
600072 |
| Selaiyur |
600073 |
| Pozhichalur |
600074 |
| Pammal |
600075 |
| Korattur RS |
600076 |
| Elruverkadu |
600077 |
| K.K. Nagar |
600078 |
| Sowcarpet |
600079 |
| Korattur |
600080 |
| Tondiarpet |
600081 |
| Jawahamagar |
600082 |
| AshokNagar |
600083 |
| Flowers Road |
600084 |
| Kottupuram |
600085 |
| Gopalapuram |
600086 |
| Alwarthirunagar |
600087 |
| Adambakkam |
600088 |
| Nandambakkam |
600089 |
| Besantnagar |
600090 |
| Madipakkam |
600091 |
| Virugambakkam |
600092 |
| Saligramam |
600093 |
| Choolaimedu |
600094 |
| Jaffarkhanpet |
600095 |
| Perungudi |
600096 |
| Ekkaduthangal |
600097 |
| SIDCO Estate |
600098 |
| Kolathur/CPT |
600099 |
| Mrusoolam |
600100 |
| Annananagar W. Ext. |
600101 |
| Annanagar E. Ext. |
600102 |
| Manali New Town |
600103 |
| High Court Buildings |
600104 |
| Commander-in-Chief |
600105 |
| Arumbakkam |
600106 |
| Koyambedu |
600107 |
| Broadway |
600108 |
| Railway Car Shed |
600109 |
| Ponniammanmedu |
600110 |
| Ayappannagar |
600111 |
| Choolai |
600112 |
| Tharamani |
600113 |
| Pazhavanthangal |
600114 |
| Madras University |
600115 |
| Porur |
600116 |
| Minjur |
601203 |
| Ponnery |
601204 |
| Pulicat |
601205 |
| Kaverapetai |
601206 |
| Arambakkam(rs) |
601207 |
| Tirupalaivanan |
601208 |
| Thirumullaivoyal |
601209 |
| Perumbedu |
601210 |
| Elavur |
601211 |
| Iguvan Palayam |
601212 |
| Jothi nagar |
601213 |
| Devampattu |
601214 |
| Padappai |
601301 |
| Gowrivakkam |
601302 |
| Old pallavaram |
601303 |
| Thiruninravur |
602024 |
| Pakkam |
602025 |
| Palavakkam |
602028 |
| Mangadu |
602101 |
| Nazarethpettai |
602103 |
| Vellavedu |
602103 |
| Nemam |
602107 |
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