Contact Us

By Phone

Call toll-free: 1-800-733-1732.
You have access to your account information anytime using our 24-hour automated telephone system.
Customer Service representatives are available by telephone, Monday through Friday, 8:00 am to 8:00 pm CT and Saturday 8:00 am to 5:00 pm CT excluding Federal holidays.
Call collect from outside the U.S. 1-605-232-3058.

By SecureMail

Login to the 1FBUSA Online Services home page, click on Account Notices, click Open Support Center, click Send Us a SecureMail. Then compose and submit your SecureMail message.

For 1FBUSA Banking

View Contact Information for Banking

General Inquiries - Credit Card Account

1st Financial Bank USA
Credit Card Service Center
P.O. Box 1100
North Sioux City, SD 57049

Bill Payments

1st Financial Bank USA
P.O. Box 4524
Carol Stream, IL 60197-4524

Express Overnight Service

1st Financial Bank USA
363 West Anchor Drive
Dakota Dunes, SD 57049