ILLINOIS RATE INDEX - IL
Illinois car insurance rates
Estimates and published averages, not a quote. Not insurance advice. Your actual premium will differ based on your address, vehicle, record, limits and insurer.
Combined average premium, 2023
$1,257
Liability + collision + comprehensive, one insured vehicle.
Average expenditure, 2023
$1,153
What the average insured vehicle actually cost across the mix bought.
Liability average premium, 2023
$598
Use this to benchmark liability-heavy or liability-only quotes.
Where Illinois sits nationally
The countrywide combined average premium in the same NAIC dataset was $1,438. Illinois at $1,257 is $182 (12.6%) below that figure, which ranks it 9 of the 12 states in our launch index, from highest to lowest combined average. The countrywide average expenditure was $1,282, compared with $1,153 in Illinois.
That comparison is useful for context, not for prediction. NAIC itself warns that state averages reflect different coverage mixes, state laws, traffic conditions and demographics, so direct state to state comparisons need caution. A driver in a dense metro area of Illinois can pay far more than a rural driver with the same car and record.
Illinois insight: what the coverage split tells you
Three numbers on this page answer three different questions, and reading them together says more than any one of them alone. The combined premium of $1,257 is what a fully covered vehicle cost on average. The liability premium of $598 is the floor layer every driver buys. The difference, $659 or about 52.4% of the combined figure, is the average price of protecting the car itself through collision and comprehensive in Illinois in 2023. If you are deciding whether to keep physical damage coverage on an older paid-off car, that $659 average slice is the amount in play, and our liability-only vs full coverage guide shows how to run the decision with it.
The second signal is the gap between the combined premium and average expenditure. Illinois drivers actually spent $1,153 per insured vehicle on average, which is $104 less than the combined figure, or about 91.8% of it. Expenditure sits below the combined premium because not every vehicle carries collision and comprehensive, deductibles vary, and the mix of limits people buy is thinner than a full combined policy. When your own spending sits near the expenditure figure but your quote is built like a combined policy, you are probably comparing two different products. The Car Rate Checker lets you switch between all three measures for Illinois so the comparison matches the quote in front of you.
The third signal is local. Illinois ranks 9 of 12 in this index, and its minimum liability framework is 25/50/20. Confirm current requirements with the Illinois Department of Insurance. A state can rank high because claims are expensive, because drivers buy more coverage, or both, and the NAIC averages alone cannot separate those causes. What you can do is benchmark your own quote against the right figure above, then ask an insurer which rating factors explain the distance between your price and that benchmark.
How to benchmark a Illinois quote
- If your quote includes collision and comprehensive, compare it first with the combined figure, $1,257.
- If your quote is liability-only, compare it with the liability figure, $598. Do not compare it with the combined figure.
- If your quote covers more than one vehicle or more than one driver, divide carefully or ask the insurer for the per vehicle view. The NAIC figures are per insured vehicle.
- Check the age band pages if a driver under 25 or around 65 is on the policy. Age changes where you should expect to sit relative to the benchmark, even though NAIC does not publish an age dollar split here.
Minimum coverage in Illinois
Published minimum in our index notes: 25/50/20. Confirm current requirements with the Illinois Department of Insurance. Minimum limits are a legal floor. They are not a recommendation for how much protection your household needs.
What pushes Illinois premiums up or down
Across states, the recurring drivers are crash frequency, repair and medical costs, theft and weather claims, litigation patterns, the share of uninsured drivers, and how densely people live and drive. Within Illinois, your garaging ZIP code, annual mileage, vehicle repair cost, prior claims, tickets, and in many states a credit based insurance score, will move your quote away from the state average in either direction.
Trend context: the U.S. Bureau of Labor Statistics reported its motor vehicle insurance Consumer Price Index was up 0.2% over the 12 months ended February 2026. A price index moving slowly after a sharp rise does not mean premiums fell back to older levels. It means the measured increase slowed in that window.
Try the benchmark checker
Use the Car Rate Checker to place your state, age band and coverage level against the same published figures on this page. It returns a benchmark, not a quote. For the decisions behind the numbers, read the deductible guide and the coverage split guide.
Common questions about Illinois rates
What is the average car insurance premium in Illinois?
In the NAIC 2023 published data behind this page, the Illinois combined average premium (liability plus collision plus comprehensive, one insured vehicle) was $1,257, the liability average premium was $598, and average expenditure was $1,153. Those are group averages for 2023, not a quote for you.
Why is my Illinois quote higher than the published average?
The average blends rural and urban drivers, clean and ticketed records, and cheap and expensive cars. A city garaging address, a young driver, low deductibles or a recent claim can each move a real quote well above $1,257. Compare like with like: a quote with collision and comprehensive belongs against the combined figure, a liability-only quote against $598.
What are the minimum liability limits in Illinois?
Our index notes list 25/50/20 for Illinois. Confirm current requirements with the Illinois Department of Insurance. Minimum limits are a legal floor, not a recommendation for the protection your household needs.
How much of the Illinois premium is physical damage coverage?
At the published average level, the gap between the combined figure ($1,257) and the liability figure ($598) is $659, about 52.4% of the combined premium. That is the average price of collision and comprehensive in the 2023 data, and it is the portion a deductible decision can influence.
Sources and verification
Every premium figure on this page: NAIC 2023 Auto Insurance Database Average Premium Supplement (June 2025), Tables 1C, 4 and 5, 2023 data, verified 2026-10-04. Source document: https://content.naic.org/sites/default/files/aut-db_1.pdf. Trend figure: U.S. Bureau of Labor Statistics, The Economics Daily, March 19, 2026, http://www.bls.gov/opub/ted/2026/consumer-prices-up-2-4-percent-over-year-ended-february-2026.htm . Minimum limit note is a starting point only. Confirm current law with your state insurance regulator. Full method: Methodology.
Other state indexes
- California car insurance rates - $1,417 combined, 2023
- Texas car insurance rates - $1,727 combined, 2023
- Florida car insurance rates - $1,994 combined, 2023
- New York car insurance rates - $1,896 combined, 2023
- Pennsylvania car insurance rates - $1,274 combined, 2023
- Ohio car insurance rates - $1,038 combined, 2023