Mars Insurance Agency: Insurance in Crystal Lake, IL, McHenry County, IL and Surrounding Areas. From the first car to the first home, a new business or a new addition to the family, Mars Insurance Agency has been the company Illinois has trusted since 1968. That's a half-century of providing service with integrity to both residential and business clients in need of solid insurance protection.
Tabatha Bruggeman — Our family was looking for new home & auto insurance. Mars Insurance was recommended by quite a few people. My husband also