what is an ABA number?

Answer 1

I believe it stands for American Bank Address, and it is the left most series of numbers at the bottom of your check.

ABA numbers expedite the processing of debits and credits between financial institutions - kind of like IP addresses are used to idenity a computer.

Answer 2

Hi!
I've also noticed it called SWIFT as well..although I have no clue what that is. ABA routing numbers are used to make sure the check or electronic transfer gets to the specific bank.
Small banks only have one routing number compared to big ones..who have bunches of them.

With one of my banks, it depends on the state the account was setup in..not necesarily the state in which I reside.

I do not recommend calling the main 800#'s for routing numbers-best to call your closest branch and ask them.
Even then be careful and double check..many moons ago I was given a wrong routing number over the phone..I had no clue it is on every check I write.

It's the first eight or nine digits on the bottom of the check..the second number is your account number.

Always include a leading zero with it if it's there...not doing so may or may not cause problems. I have had problems just because of the leading zero...some systems just don't seem to want to accept it.

Answer 3

ABA or American Bnkers Association number, also routing number is a number that identifies a particular bank for transfers of funds.

http://www.aba.com/Products/PS98_Routing.htm

Answer 4

Its the bank rounting number, it will be on your checks to the left of the account number. Its needed if you want to send/receive electronic funds transfers.