According to the official website, the postal address for Capital One payments is Card Services, P.O. Box 60501, City of Industry, CA 91716-0501. Card Services Inc., ATTN: Exception Dept, 2012 Corporate Lane, Suite 108, Naperville, IL 60563 is the overnight address.
According to the website, Capital One cardholders should check their credit card bills for the correct mailing address. They can also choose the one-time payment option, which permits payments to be credited the same day if made before 8 p.m. Eastern Time. AutoPay is another payment method that requires only a one-time setup and automatically arranges payments a day before the due date. There are no additional fees for either the one-time payment or AutoPay choices.