The big reason that D.C. makes the cut is population density. The entire district is basically an urban area, which leads to higher insurance rates. According to Census information, D.C has a population density of 11,020 people per square mile. While this number is certainly smaller than New York City, which clocks in at 28,256 people, it puts it well above other large cities, such as Houston and even Los Angeles.
Idaho is pretty sparsely populated and mainly rural which leads to lower car insurance rates. According to World Atlas, Idaho has the seventh least population density in the country. There are roughly 20 people for every square mile. Wide-open spaces with few people mean fewer cars out on the road and fewer accidents, everything an insurance company loves.

While competition certainly helps keep premiums in check, it’s not the only factor. “In addition, under Virginia’s laws for seeking recovery, the person at fault for causing a car accident is held responsible for any resulting harm,” says Schrad. “Virginia also requires uninsured motorist coverage as part of a driver’s own auto insurance plan in case they are involved in an accident with an uninsured driver,” he continues. Not all states require drivers to carry uninsured motorist coverage.
Idaho is pretty sparsely populated and mainly rural which leads to lower car insurance rates. According to World Atlas, Idaho has the seventh least population density in the country. There are roughly 20 people for every square mile. Wide-open spaces with few people mean fewer cars out on the road and fewer accidents, everything an insurance company loves.
Credit score: This can be a main factor for insurers in states that allow it. According to an Insure.com rate analysis, drivers with poor credit pay 71 percent more on average for car insurance than drivers with good credit. “All insurers have come to the conclusion that there is a correlation between credit worthiness and the probability of having a claim,” says Travis Biggert, chief sales officer with HUB International. Keep your credit score in the acceptable range to keep your premium affordable.
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