631212 is the Postal Index Number for Tiruvallur, Tamil Nadu, in Thiruvallur district of Tamil Nadu. Mail addressed to this PIN code is routed through Nallathur, Thalavedu, Poonimangadu post offices, centred near 13.1733, 79.6168. 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.
631212 is the PIN code for Tiruvallur, Tamil Nadu. It sits in Thiruvallur district, Tamil Nadu, and is served by Nallathur, Thalavedu, Poonimangadu post offices.
Which post offices come under 631212?
Nallathur, Thalavedu, Poonimangadu. 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 Thiruvallur district have?
Besides 631212, we list at least 24 more PIN codes in Thiruvallur district — they are linked above so you can move to a neighbouring area.
Why does the PIN code matter when buying or renting in Tiruvallur?
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.
