Whether your checking account and your savings account numbers are different depends on the bank that you use. Some banks use the same number for both of your accounts. Other banks will have different account numbers for all of your different accounts. You can find your savings account number at the bottom of a savings account deposit slip and your checking account number at the bottom of your check.
Parts of Account Numbers
Each bank account identification number is made up of two parts: the routing number and the account number. The routing number depends on where the account was opened. If you opened both your savings account and checking account at the same branch, the routing number may be the same for both accounts even if the account numbers are different.
Purpose of Separate Numbers
Having different numbers for your different bank accounts helps you and the financial institutions keep track of where your money is going. Even though it's all your money, you may use the accounts for different purposes and might also earn different interest rates. For example, you might use your savings account as a rainy day fund and earn more interest there than in your checking account. In addition, having two different account numbers ensures the checks you write come out of your checking account and not your savings account. If your bank uses the same account number for both your checking and savings account, you must indicate which account you want the money added to when you make a deposit.