It has been discovered that billion dollar car insurance companies like GEICO and Progressive, traditionally charge higher rates to those who DO NOT have high levels of formal education, or to those who DO NOT have high paying white collar occupations, or to those who DO NOT own a home, regardless of whether they are perfect drivers.
Factors like these are used by some insurance companies to traditionally charge much more to those who are more likely to have lower incomes, while wealthier drivers pay less. Remember, this means even if you have a perfect driving record, there's a good chance you will pay more.