how to find my posb branch name
The POSB branch codes are: 1  If there are 10 digits in your account number, the branch code is the first 3 digits of your account number. 2  If there are 9 digits in your account number, the branch code is â081â. If there are 10 digits in your account number, the branch code is the first 3 digits of your account number. 2  If there are 9 digits in your account number, the branch code is â081â.