Car Insurance in Illinois: Rates, Rules & Requirements

Illinois sits near the national average for car insurance costs, but rates vary significantly between Chicago and downstate. Here's what Illinois drivers need to know about coverage requirements, average costs, and available discounts.

Illinois Minimum Insurance Requirements

Illinois requires all drivers to carry 25/50/20 liability coverage:

Coverage Type	Minimum Required	What It Covers
Bodily Injury Liability	$25,000 per person / $50,000 per accident	Medical expenses for others you injure
Property Damage Liability	$20,000 per accident	Damage you cause to others' property

Illinois also requires uninsured/underinsured motorist (UM/UIM) coverage at 25/50 — one of the few states that mandates it. This protects you if the at-fault driver has no insurance or insufficient coverage.

Our recommendation: Upgrade to 100/300/100 for proper protection. The cost difference is typically $150–$400/year — a small price for financial security.

Illinois Is an At-Fault State

Illinois uses a fault-based system: the driver who causes an accident pays for damages. You have options after an accident:

• File a claim with the at-fault driver's insurance
• File a claim with your own insurer (who then seeks reimbursement from the at-fault driver)
• Sue the at-fault driver directly for damages

Average Car Insurance Costs in Illinois

Coverage Level	Avg. Annual Cost
Minimum (25/50/20 + UM)	$500 – $700
Full Coverage	$1,600 – $2,400

Average Rates by City

City	Avg. Annual (Full Coverage)
Chicago	$2,200 – $2,800
Rockford	$1,800 – $2,200
Peoria	$1,500 – $1,900
Springfield	$1,400 – $1,800
Naperville	$1,700 – $2,100

Chicago rates are 30–50% higher than downstate Illinois due to traffic density, theft, and higher claim frequency.

Cheapest Insurers in Illinois

Insurer	Avg. Annual (Full Coverage)
USAA (military)	$1,200 – $1,600
State Farm (headquartered in IL)	$1,400 – $1,900
GEICO	$1,500 – $2,000
Progressive	$1,600 – $2,200
Country Financial (IL-based)	$1,300 – $1,800

Illinois Insurance Laws You Should Know

Electronic Verification

Illinois uses the Illinois Automobile Insurance Plan (IAIP) electronic verification system. Police can instantly verify whether you have valid insurance during traffic stops.

Penalties for Driving Without Insurance

• First offense: $500–$1,000 fine + license suspension until insurance is obtained
• Second offense: $1,000 fine + longer license suspension
• Vehicle registration may also be suspended

Mandatory UM/UIM Coverage

Unlike most states, Illinois requires UM/UIM coverage at 25/50. You can't reject it. This is a valuable protection — about 12% of Illinois drivers are uninsured.

Illinois Discounts to Ask About

• Safe driver discount — clean record for 3+ years
• Good student discount — B average or better
• Multi-policy discount — bundle with renters/homeowners
• Multi-vehicle discount — insure more than one car
• Defensive driving discount — complete an approved course
• Low mileage discount — drive under 7,500–10,000 miles/year
• Anti-theft device discount — valuable in Chicago area
• State Farm / Country Financial affinity — Illinois-based insurers often offer competitive rates

Frequently Asked Questions

Is car insurance mandatory in Illinois?

Yes. Illinois requires liability (25/50/20) and UM/UIM (25/50) coverage. Driving without insurance results in fines, license suspension, and registration suspension.

Why is Chicago car insurance more expensive?

Chicago has higher rates due to traffic density, higher theft and vandalism rates, more frequent claims, and higher repair costs. Urban zip codes can cost 30–50% more than rural Illinois.

Does Illinois use credit scores for car insurance rates?

Yes. Unlike California and New York, Illinois insurers can use credit-based insurance scores to help set rates. Improving your credit can lower your premium.