Optical Auto & Car Insurance | Affordable Rates the table above we have recorded data comparing car insurance rates in Arlington County for different age groups and Gender. We are trying to explain here how car insurance rates change as the age of driver changes and also how its dependent on gender. For example average Car insurance in Arlington County for a male driver age ( 20 ) is $2442 while for the same age average car insurance rates goes down reaching $2045 for women.