Cardholders can pay their credit card bill by logging into their online account, through the mobile app, or by mail. The PenFed mobile app is available on iOS and Android. Along with paying your card, the app connects you to all your PenFed accounts. Customers can manage accounts, pay bills, access digital wallets (Apple Pay, Samsung Pay, Google Pay), make mobile deposits, and more. To mail payments to PenFed, use the following mailing address: PenFed Credit Union P.O. Box 247080 Omaha NE 68124-7080