The account number on a check is located at the bottom, typically as the second set of numbers from the left. It appears immediately to the right of the routing number and to the left of the check number. The routing number is the first set of nine digits on the bottom left, and the account number usually follows it and is longer, often between 8 to 12 digits or more depending on the bank. The check number is usually the last set of numbers on the right and also appears in the upper right corner of the check

. In summary:

• Routing number: First set of 9 digits on the bottom left
• Account number: Second set of numbers, to the right of the routing number
• Check number: Last set of numbers on the bottom right and also at the top right corner of the check

This layout helps banks and financial institutions identify the correct bank and account for processing transactions