Contact Security National Bank
Have a question? We're here to help. Reach out to a customer service representative by submitting the online form below.
Call our customer service center at (605) 977-9000 in Sioux Falls or (605) 232-6060 in Dakota Dunes.
Visit our branch locations page to find the Security National Bank nearest to you.
To report a lost or stolen card:
Immediately call 1-800-236-2442 (available 24 hours a day), then notify your usual location during business hours.
Customer Service Contact Form
NOTE: Please do not use this form to send confidential information such as account numbers, passwords, tax returns, social security numbers or any other sensitive data. Please call or visit your local branch if this information needs to be shared.