Pincode 631203 have been assigned to 10 locations.

Egattur , Kadambathur , Tiruvallur
Kadambathur , Tiruvallur , Tiruvallur
Kaivandur , Kadambathur , Thiruvallur
Pandur , Kadambathur , Tiruvallur
Pattaraiperumbudur , Kadambathur , Tiruvallur
Pudumavilangai , Kadambathur , Tiruvallur
Selai , Kadambathur , Tiruvallur
Senji , Kadambathur , Tiruvallur
Tirupasur , Kadambathur , Tiruvallur
Vidaiyur , Kadambathur , Tiruvallur