The cheapest car insurance rate is $38 a month from Geico according to our research team's cost analysis of national average prices for minimum coverage. The top 10 cheapest car insurance companies are Nationwide, Geico, State Farm, Travelers, Progressive, AAA, Allstate, Chubb, Farmers and USAA.

State enrolled nurses also benefit from lower premiums, and groups such as magistrates and teachers also tend to pay less than average. Historically, women were deemed to be safer drivers than men and paid less for car insurance for women as a consequence.

The cheapest car insurance company in Ohio is Hastings Mutual at $750 per year on average, or $63 per month, according to the most recent NerdWallet analysis of full coverage car insurance rates in Ohio. Meanwhile, the average cost of full coverage car insurance in Ohio is $1380 per year, or about $115 per month.

Both Geico and Progressive offer cheap car insurance to drivers across the country. Geico's rates are typically lower overall, but Progressive tends to offer better prices to high-risk drivers. High-risk drivers are those with a recent DUI, at-fault accident or speeding ticket on their driving record.