---
title: 1FBUSA - Contact Us
description: Call 1st Financial Bank USA (1FBUSA) toll-free at 1-800-733-1732 Mon - Fri 8:00 am to 8:00 pm CT Sat 8:00 am - 5:00 pm CT excluding Federal holidays.
---

# Contact Us

## By Phone

Call toll-free: [1-800-733-1732.](tel:+18007331732)  
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.](tel:+16052323058)

## 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**](https://www.1fbusa.com/banking/contact?hsLang=en)

## By Mail

### 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

![Member FDIC](https://www.1fbusa.com/hubfs/Bank%20Site/FDIC_Member.png)

© 2026 1st Financial Bank USA.

×

 All of our communications are in English. We do not provide any language access services. A translation and description of commonly used debt collection terms are available in multiple languages on the New York City Department of Consumer Affairs' website at [www.nyc.gov/dca](https://www.nyc.gov/dca).