603109 is the Postal Index Number for Chengalpattu, Tamil Nadu, in Chengalpattu district of Tamil Nadu. Mail addressed to this PIN code is routed through Mullikolathur, Pandur, Puliyur post offices, centred near 12.5972, 80.0556. The first digit of a PIN code identifies the postal region, the first two the postal circle, the third the sorting district and the last three the delivery post office.
603109 is the PIN code for Chengalpattu, Tamil Nadu. It sits in Chengalpattu district, Tamil Nadu, and is served by Mullikolathur, Pandur, Puliyur post offices.
Which post offices come under 603109?
Mullikolathur, Pandur, Puliyur. A single PIN code often covers several delivery post offices, and a large locality is in turn frequently split across more than one PIN code.
How many PIN codes does Chengalpattu district have?
Besides 603109, we list at least 24 more PIN codes in Chengalpattu district — they are linked above so you can move to a neighbouring area.
Why does the PIN code matter when buying or renting in Chengalpattu?
A PIN code pins down an exact delivery area, which is far more precise than a locality name — the same locality name often appears in several cities. It also decides the postal address on your registration documents, utility connections and loan paperwork.
Where does this PIN code data come from?
The Department of Posts All India Pincode Directory, covering all 19,586 PIN codes across 37 states and union territories. Our copy was last refreshed on 2026-08-24.
