Let's face it: Car insurance pricing is an enigma to most drivers. While it's frustrating enough to know your car insurance rate can be calculated based on factors you can't control, it's even more difficult to find out your rate has increased when you renew your policy.

That's happening for about 5.6 million Americans renewing their auto policies in 2020. Of about 246 million private auto insurance policies in the US, about 2%, are projected to see a rate increase as of January 16, 2020.

In these 15 states, it might be worth shopping around for car insurance , as all insurance companies move and change their rates independently. While the rates could still change in the future at any time, any changes, including rate increases, are subject to approval by the Department of Insurance. This data only considers changes to premiums. To see the complete methodology for this post, scroll to the end.

Here are the states where drivers can expect to see jumps in their car insurance premiums in 2020, from least to most policyholders affected.

15. Arizona

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Over 93,000 Arizona customers will see their rates increase in 2020, with several companies raising rates in the Grand Canyon State.

Number of policyholders affected: 93,903

Average rate increase: 6.94%

14. Wisconsin

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In Wisconsin, over 100,000 drivers will find that their rates are higher than they were last year.

Number of policyholders affected: 104,210

Average rate increase: 6.28%

13. Nevada

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Many Nevada residents will find their car insurance rates increasing in 2020.

Number of policyholders affected: 113,799

Average rate increase: 4.46%

12. West Virginia

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West Virginia drivers will see their insurance get more expensive in 2020.

Number of policyholders affected: 128,399

Average rate increase: 6.88%

11. Connecticut

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Connecticut drivers will see rates go up by just over 3.5%.

Number of policyholders affected: 132,601

Average rate increase: 3.73%

10. Kansas

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Insurance is getting more expensive in Kansas for several thousands of customers, who will see their rates spike over 8%.

Number of policyholders affected: 138,063

Average rate increase: 8.23%

9. Georgia

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Car insurance is getting more pricey in Georgia, where over 150,000 drivers will see their rates go up.

Number of policyholders affected: 152,962

Average rate increase: 5.68%

8. Virginia

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Over 200,000 Virginia residents will see their rates increase by an average of about 4%.

Number of policyholders affected: 202,389

Average rate increase: 4.10%

7. New York

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Car insurance in New York is already expensive. But nonetheless, rates will be surging by about 5.5% in this state.

Number of policyholders affected: 223,368

Average rate increase: 5.51%

6. Pennsylvania

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Many Pennsylvania drivers should expect to see increases to their premiums in 2020.

Number of policyholders affected: 274,771

Average rate increase: 3.91%

5. Massachussetts

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Nearly half a million Massachussetts drivers will be seeing changes to their premiums.

Number of customers affected: 452,741

Average rate increase 5.30%

4. Michigan

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Michigan is already one of the most expensive states for car insurance, and a 5.3% increase won't make it any cheaper for more than half a million residents.

Number of customers affected: 500,857

Average rate increase: 5.31%

3. Indiana

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More than a tenth of Indiana's 6.6 million residents will see their car insurance rates increase.

Number of customers affected: 578,994

Average rate increase: 3.56%

2. Illinois

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Many Illinois residents will be seeing their car insurance premiums increase by 4%.

Number of customers affected: 678,278

Average rate increase: 4.02%

1. South Carolina

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Just under a quarter of South Carolina's residents will see their car insurance rates go up, with over 1 million policyholders affected.

Number of customers affected: 1,284,303

Average rate increase: 6.74%

How did we get this ranking?

Every insurance company is required to notify and get approval from state regulatory boards before making changes. Business Insider gathered data from S&P Global Marketing Intelligence and the National Association of Insurance Commissioners from over 1,100 rate change filings from companies across the US. This data looks at personal auto insurance policies only, including policies bundled with homeowner's insurance.

These 15 states are ranked by totaling the number of policyholders whose rates will increase in 2020, and the average calculated as the average of all proposed rate increases in the state.

Note that since every insurance company files separately, there may be more rate changes for auto insurance policyholders on the horizon. The states listed here account only for the rate changes that have already been submitted, which will mostly take place in the first half of 2020.

Also, auto insurance rates vary by person. If you have an accident or other event, your rates will change accordingly on an individual basis.

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