Who We Are

Security National Bank of South Dakota is locally owned, full-service community bank located in Sioux Falls and Dakota Dunes. We are a subsidiary of Security National Corporation, which has set the standard for integrity, liability, innovation and commitment to providing customers with superior service in the banking industry. Since its founding in 1884, Security National Bank (and now Security National Corporation) has accumulated more than $1 billion in bank assets and $3 billion in Wealth Management assets.

Our Mission

For us, banking is about more than finances. From day one, we’ve valued people first — both our customers and employees. Our Bank was founded on the principles of humility and community service, and these characteristics have become ingrained in our culture and are reflected by our employees every day. 

We are deeply committed to the success of our … 

  • CUSTOMERS: We deliver high quality products and services designed to meet and exceed our customers’ expectations and help them with their financial lives. 
  • EMPLOYEES: We attract, retain and reward sales- and service-oriented professionals who demonstrate a commitment to personal development, teamwork and superior customer satisfaction. 
  • COMMUNITY: We are at the forefront of supporting the social well-being of the communities we serve, with more than 100 community contributions annually, and thousands of hours volunteered by hour employees with area organizations each year.

Our HiStory

Security National Bank, the flagship of the Security National Corporation, was chartered in 1884 in Sioux City, Iowa, and founded on the principles of humility and community service. 

The economic panic of the late 1800s and the Great Depression hit the Midwest especially hard. But while many banks closed, Security National Bank remained. Our daring and innovative moves through the years have not only led to our continued success, but helped set the standard in our industry.

Security National Bank of South Dakota joined the Security National Corporation in 1997, opening an office in Dakota Dunes, South Dakota. The original office offered an enjoyable, private banking atmosphere and placed a heavy emphasis on Investment Management and Trust Services.

In 2007, Security National Bank of South Dakota opened two offices in Sioux Falls, S.D. — one at 74th Street and Louise Avenue, and 26th Street and Lorraine Avenue. 

For more information about Security National Bank of South Dakota, contact us today.