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Home, Auto & Business Insurance

Alexander Insurance: Serving the entire states of Missouri and Illinois


Since 1957, Alexander Insurance Agency has delivered quality insurance solutions to individuals in Missouri. Our agency focuses on providing personal insurance including auto and homeowners coverage as well as specializing in coverage for commercial needs.


Jasper DeMonbrun, Matt Alexander's grandfather, started the agency in 1957 and is now in its' third generation of providing insurance services to many families in St. Charles and the surrounding areas. We built our business with over 50 years of experience and knowledge.


Your relationship with your agent can have a dramatic impact on you and your family's financial security. Our team of knowledgeable insurance professionals is committed to helping you find a policy that fits your needs. We focus on providing one-on-one attention and quality customer service to create an experience that’s difficult to find in today’s market. At Alexander Insurance Agency, we’ll work with you to ensure that you and those you care about most are protected.


We are an independent agent, because "Your Independent Agent Serves YOU, the Customer First."


We are proud of the fact that when you call our agency, you are greeted by a friendly person, not a machine.  You don't have to choose a number, just choose the right agency. Alexander Insurance Agency, for all your insurance needs.



Alexander Insurance Agency



Accommodating, professional, helpful, and quick. Very comfortable experience and I was impressed by their capabilities. Highly recommended.
Brad M.
I feel lucky to have found an agent willing to provide this level of service. No need to look anywhere else!
Michelle D.
Over the years we’ve never once had to worry about our coverage. My husband and I are long-time customers and proud to be.
Carol S.
Surprisingly flexible and in-touch with my needs as a small business owner. Can’t ask for more.
Spencer F.
They have strong ties with the community, and it shows. It’s nice to do business with people that really show they care about you and your family.
Susan T.

Our Location

Alexander Insurance Agency

821 Madison St
St. Charles, MO 63301
Main office: 636-385-5616