About the Firm

About the Firm

Henjes Conner & Williams, P.C. is a Certified Public Accounting and Consulting firm located in the Sioux City, IA metro area. The company was established in 1990 when six partners left their regional accounting and consulting firm to form a new company.  To accomodate our growing staff and client base the firm relocated to a newly constructed office in Dakota Dunes, SD in June 2018.

Today, Henjes Conner & Williams, P.C. has seven shareholders and a  staff of more than thirty people. The firm hires the best graduates from colleges in northwest Iowa, southeast South Dakota and northeast Nebraska. The firm strongly believes that promotions should come from within the company and all partners, and most senior staff, have many years of experience with Henjes Conner & Williams, P.C. The majority of our personnel started with the firm as staff accountants.

The clients served by Henjes Conner & Williams, P.C. are primarily located in Siouxland, an area within a fifty mile radius of Sioux City and consisting of Iowa, Nebraska and South Dakota. Our clients include many small and medium-sized family owned businesses, non-profit organizations, professionals, and some of the largest businesses in our practice area. The firm serves clients in a wide range of industries, including manufacturing, construction, colleges, nursing homes, real estate companies, brokers, medical practices, fast food sales, and financial institutions.

Henjes Conner & Williams, P.C. is committed to providing outstanding service to all of our clients, opportunities to all of our personnel, and a friendly and professional work environment for our staff. As a firm, we are committed to being contributing members in Siouxland, with a long-standing tradition of community involvement and civic responsibility.