Pincode 621651 have been assigned to 10 locations.

Alundalaipur , Kallakudi TR , Lalgudi
Kallakudi TR , Lalgudi , Lalgudi
Kanakiliyanallur , Kallakudi TR , Ariyalur
Palanganatham , Kallakudi TR , Ariyalur
Peruvalappur , Kallakudi TR , Ariyalur
Sannavur , Kallakudi TR , Lalgudi
Sirukalappur , Kallakudi TR , Ariyalur
Tappay , Kallakudi TR , Lalgudi
Vadugarpet , Kallakudi TR , Lalgudi
Varakuppai , Kallakudi TR , Ariyalur