If you are a holder of the Sunoco credit card issued by Citi, you have several options to make your monthly card payment. You can pay:
- Online: Log in to your account at http://sunoco.accountonline.com/ and make your payment.
- By Mail: Send your payment to the following address: Sunoco Rewards Card Payments, P.O. Box 78056, Phoenix, AZ 85062-8056
- By Phone: The Sunoco credit card customer service phone number for payments is 866-622-3574.