South Indian Bank is in Follwing Districts in Kerala State

Alappuzha
Alapuza
Alapuzha
Alapuzzha
Cannur
Ernakulam
Idukki
Kaloor
Kannur
Kasaragod
Kasaragud
Kasargod
Kollam
Kottayam
Kozhikode
Malappuram
Malapuram
Maradu
Muvattupuzha
Nadakkavu
Nayarambalam
Palakkad
Pathanamthitta
Porathisseri
Thiruvananthapuram
Thiruvaniyoor
Thodupuzha
Thrissur
Trissur
Trivandrum
Wayanad