Saint Louis, Missouri

Serving the Saint Louis Metropolitan Area

Welcome to the one place where everything works.

The roots of our company run deep in the St. Louis area. We opened our doors in 1955 and hit the ground running. Over the years we’ve seen great changes in our offerings as a company. As the landscape of technology and business has changed, so have we. One thing that has not changed, however, is our commitment to providing excellent service to our customers.

When you partner with SumnerOne, you can rest assured that you are working with a company that cares. We offer corporate level solutions with a small business heart. At SumnerOne we are dedicated to serving the St. Louis Metropolitan Area, and are proud to call this city the birthplace of our company. Contact us to find out more about how we can help your business.

Meet the St. Louis Team


Earl Caspersen
Earl Caspersen
VP of Service
Gail Fuller
Gail Fuller
Administrative Manager
Rob Newell
Rob Newell
Account Manager
Ken Royer
Vice President of Sales

Contact the St. Louis Office

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Email Kansas City

6691 Manchester Rd.
St. Louis, MO 63139