If you need assistance, please visit our Locations page for contact information for the Security National office nearest you. You may also fill out the form below to request information or to send general inquires.

There was an error submitting the form

Thank you for your submission! 

Can't sign in or need other Online Banking assistance? 

Contact Customer Support:
Call (712) 277-6666 or
1-800-475-4762, ext. 6666, Mon-Fri 8am-5pm CST (excluding federal holidays). 

For after-hours and weekend support:
Please call 1-888-568-0687.

NOTICE: This electronic message is not encrypted and therefore is not secure against interception. If your information is very sensitive, or includes personal or confidential information (such as your bank account, charge card, or social security number) we recommend you call us at (712) 277-6500 or send it by mail to:

Security National Bank
P.O. Box 147
Sioux City, IA 51102