When living in the state of Missouri, there are specific requirements that you have to comply with in order to acquire auto insurance. You first need to locate all of the possible auto insurance st louis 123 companies that are available so that you can compare the prices of their policies. You will then need to give the required information that they need in order to process your request. This includes information concerning the drivers that will be on the policy as well as the year, make, and model of the vehicle or vehicles that are going to be covered under the policy.