Pincode 631301 have been assigned to 6 locations.

Ammavarikuppam , Tiruvallur ,
Balapuram , Ammavarikuppam ,
Chandravilasapuram , Ammavarikuppam ,
Kadananagaram , Ammavarikuppam , Tirutani
Mahankalikapuram , Ammavarikuppam , Tirutani
Thyagapuram , Ammavarikuppam ,