Cash app routing number known as bank code number. Its indicate bank name and location where it exists physically. All the certified banks have their own unique and exclusive routing numbers in the US. Square Cash App does have a routing number but its not a bank. Cash App is supported by two certified banks of the US – Sutton Bank and Lincoln Savings Bank. Cash App manages its debit card services with the help of Sutton Bank but Lincoln Savings Bank assists Cash App in direct deposit services.