Chennai Central/ Ayanavaram - TN01
Chennai North West/ Anna Nagar - TN02
Chennai North East/ Tondiarpet - TN03
Chennai East/ Basin Bridge - TN04
Chennai North/ Vyasarpadi - TN05
Chennai South East/ Mandaveli - TN06
Chennai South/ Thiruvanmiyur - TN07
Chennai West/ K.K. Nagar - TN09
Chennai South West/ Valasarawakkam- TN10
Alandur/ Meenambakkam - TN22
Tambaram - TN11
Ambattur - TN13
Any other place ( Please specify)