Banks typically have customers call a toll-free number, log into their online accounts or visit a local branch to order checks. Most institutions require an account number and a routing number to complete the transaction.
The specifics of ordering checks vary slightly depending on the bank and the customer's account type. As of 2015, Chase and Citizens Bank require a starting check number for repeat orders. TD Bank only processes the first check order in person or by phone for new customers and customers who do not have online accounts. Each bank lists its specific requirements on its official website.