Where is the routing number on a check?
Your routing number is the first set of nine-digit bank numbers on a check located in the bottom left corner. Each bank has its own routing number so they can identify where the checking account was opened.
See this help article
https://ttlc.intuit.com/turbotax-support/en-us/help-article/tax-refund/number-check-routing-number/L22Crf3Gs_US_en_US