How many digits does a bank account in bank of america have?

8 - 12 digits

Explanation:

The Bank of America have a 12 digits bank account number and the last digits of the account number is for added security. The next set of number is the account numbers after routing the number. The digits are typically for 8 to 12 digits. It is that number which is particular and it is necessary for all the transactions of the  bank.

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