Cheapest Car Insurance in Idaho for 2026

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Updated: May 6, 2026

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Idaho is one of the cheapest states for car insurance, averaging $57/month for full coverage according to Quadrant Information Services 2026 data. GEICO is cheapest for full coverage ($53/month) and tops most cities. State Farm is cheapest across every violation category including DUI at $58/month, lower than most providers' clean-record rates. For drivers with poor credit, State Farm is the most expensive option at $701/month, approximately five times Grange's $139/month rate.

Cheapest in Idaho by coverage type

Cheapest by city

Cheapest by driver age

Cheapest by driving record

MoneyGeek analyzed 11 companies across all Idaho ZIP codes. Our baseline is a 40-year-old driver with a clean record and good credit, for a 100/300/100 full coverage policy with a $1,000 deductible. Young driver analysis uses family policy rates for ages 16 to 25, with separate Girls and Boys tables. Senior rates are for drivers age 65 and older. Violation profiles include speeding ticket, at-fault accident, DUI conviction and texting while driving. Bad credit profile uses a poor credit score. Idaho minimum coverage is 25/50/15: $25,000 bodily injury per person, $50,000 per accident and $15,000 property damage. Data are from Quadrant Information Services.

Cheapest Minimum and Full Coverage Car Insurance in Idaho

GEICO is cheapest for full coverage in Idaho at $53/month. State Farm is cheapest for minimum coverage at $18/month, $5 less than GEICO's minimum rate of $23/month. Dairyland is the most expensive for full coverage at $138/month; Nationwide is most expensive for minimum at $76/month. Choosing GEICO over Dairyland saves $85/month ($1,020 a year) on full coverage. The best car insurance in Idaho ranks providers on coverage quality and price.

Idaho's minimum coverage requirement is 25/50/15: $25,000 bodily injury per person, $50,000 per accident and $15,000 property damage. The $15,000 property damage limit is among the lowest in the country and falls below the value of most vehicles. An at-fault accident causing $30,000 in damage leaves you personally responsible for $15,000. The 100/300/100 full coverage benchmark covers that gap in full. 

Use the car insurance calculator for Idaho to estimate your costs, or see how much car insurance you need to decide between coverage tiers.

State Farm
$18
$54
American National
$22
$57
GEICO
$23
$53
Grange Insurance
$23
$70
Farm Bureau
$26
$69
Auto-Owners
$30
$67
Travelers
$39
$85
Farmers
$41
$86
Dairyland
$48
$138
Allstate
$59
$102
Nationwide
$76
$110

Cheapest Car Insurance by City in Idaho

GEICO is cheapest in every major Idaho city except Post Falls, where American National tops the list at $55/month. The city range spans just $50 to $56/month for the cheapest option, one of the tightest geographic spreads in the country. Lewiston is cheapest at $50/month. Boise is $54/month with GEICO, in line with the statewide full coverage average. Idaho's low population density limits the premium variance between urban and rural ZIP codes that drives large city-to-city differences in other states.

Provider choice matters more than city in Idaho. GEICO at $53/month versus Dairyland at $138/month in the same city is an $85/month gap, far larger than any within-state city variance. Compare car insurance across all providers before assuming location is the primary variable.

City
Cheapest Provider
Monthly Full Coverage

Lewiston

GEICO

$50

Nampa

GEICO

$51

Twin Falls

GEICO

$51

Caldwell

GEICO

$52

Meridian

GEICO

$53

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MONEYGEEK EXPERT TIP

"Idaho has one of the clearest warning-label situations I've seen in this data series. State Farm is legitimately the cheapest or second cheapest across nearly every profile (DUI, speeding, at-fault, seniors). But for drivers with bad credit, it goes to $701 a month. That's not a typo. That's more than five times more expensive than Grange at $139. If you have poor credit and start with State Farm because it leads everything else, you're massively overpaying. The bad credit category requires a separate decision tree. Grange doesn't even appear in the top three for most other categories, but for bad credit it's the only answer." 

— Mark Fitzpatrick, Licensed Property and Casualty (P&C) Insurance Producer in Connecticut

Cheapest Car Insurance by Age in Idaho

State Farm is cheapest for young driver standalone rates in Idaho: Girls at $124/month and Boys at $125/month. The standalone gender gap is just $1/month at State Farm. For family policy rates, State Farm is cheapest for Girls at 16 ($481/month) and Grange takes over from 17 through 25 for Girls and at all 10 ages for Boys. Grange is cheapest for Boys at 16 at $533/month, $52 less than State Farm's $585. Car insurance rates by age give a clearer view of how Idaho's pricing compares across the country.

Young Adult Drivers (Standalone, Female)
State Farm
$124
Young Adult Drivers (Standalone, Male)
State Farm
$125
Teen Drivers (16, Female, Family Policy)
State Farm
$481
Teen Drivers (16, Male, Family Policy)
Grange Insurance
$533
Seniors (65+)
State Farm
$63

Cheapest Car Insurance for High-Risk Drivers in Idaho

State Farm is cheapest across all four violation categories in Idaho. Its DUI rate of $58/month is higher than GEICO's clean-record full coverage rate of $53, though State Farm still applies the smallest DUI surcharge of any provider in this dataset. Drivers with a DUI should start with State Farm. Drivers with bad credit should skip State Farm: its $701/month bad credit rate is approximately five times Grange's $139/month, and $299 more than Farmers at $402, the second most expensive option. After a DUI, Idaho requires SR-22 filing.

Violation
Cheapest Provider
Monthly Full Coverage

Speeding ticket

State Farm

$58

At-fault accident

State Farm

$62

DUI

State Farm

$58

Texting while driving

State Farm

$58

Bad credit

Grange Insurance

$139

How to Get the Cheapest Car Insurance in Idaho

Idaho is already one of the cheapest states for car insurance, but provider choice creates large swings at every risk profile. State Farm is the top pick for violation categories; GEICO for clean-record full coverage; Grange for bad credit and young drivers. The right provider depends entirely on your profile.

  1. 1
    Use GEICO for a clean record, State Farm for violations

    GEICO at $53/month is $1 cheaper than State Farm's $54 for clean-record full coverage. State Farm is the top choice across every violation category, including DUI at $58/month, a rate lower than most providers' clean-record rates.

  2. 2
    Don’t use State Farm if your credit is poor

    State Farm's bad credit rate represents a 1,198% increase over its clean-record full coverage rate of $54. Grange at $139/month is $562 less per month, or $6,744 less per year.

  3. 3
    Use Grange for young drivers on a family policy

    Grange is the cheapest option for boys at all 10 ages from 16 to 25 and for girls from 18 to 25. State Farm is cheaper for girls at 16 and 17. A switch to Grange at 18 saves money for both genders through age 25.

  4. 4
    Match coverage to Idaho's low-cost baseline

    Full coverage averages $57/month in Idaho. Use the car insurance calculator for Idaho and check how much car insurance you need to decide when to drop comprehensive and collision. The low premium spread makes full coverage easier to justify here than in expensive states.

  5. 5
    Avoid GEICO after a DUI

    GEICO's DUI rate of $157/month is nearly three times State Farm's $58. State Farm's margin in the DUI category is wider than in any other violation category. Check car insurance after a DUI in Idaho and verify SR-22 requirements.

  6. 6
    Consider non-owner coverage

    Non-owner car insurance in Idaho covers liability for drivers who don't own a vehicle but regularly borrow or rent one. It's used to maintain continuous coverage, satisfy an SR-22 requirement, or cover rental car liability. Non-owner policies generally cost less than standard policies, often ranging from $200 to $500 a year depending on your driving history.

  7. 7
    Review your policy when violations age off

    Most violations affect rates for three years. When a violation clears, get new quotes. Provider rankings shift enough that your cheapest option may change.

  8. 8
    Compare all 11 available providers

    Idaho's 11-provider set shows wide rate differences across risk profiles. How the cheapest car insurance companies compare nationally puts those differences in context.

What Does Minimum Coverage Actually Protect You From in Idaho?

Idaho's 25/50/15 minimums look straightforward on paper: bodily injury limits that match the national baseline, paired with a $15,000 property damage floor that doesn't. Most states require $25,000 in property damage coverage; Idaho's $15,000 cap falls short of what a single newer vehicle costs to repair, let alone replace. Cause a collision on US-20 with a truck or SUV and that ceiling gets tested quickly.

However, the bodily injury side carries its own limits. Idaho ranks among the cheapest states for car insurance, with full coverage averaging just $57 a month, which makes the case for going above the minimums easier here than almost anywhere. At $25,000 per person and $50,000 per accident, the state meets the floor but doesn't clear it by much. Two injured people split that $50,000, and in a state with long stretches of high-speed rural highway, serious injuries aren't uncommon.

Here's how Idaho's required limits compare to the rest of the country, and where the minimums leave you exposed.

An image showing how Idaho's state minimum coverage compares to other states and an explanation of what is covered and where you are left unprotected.

MoneyGeek analyzed 11 auto insurance providers across all Idaho ZIP codes. Rates are ZIP code averages, and individual quotes vary. The baseline profile is a 40-year-old driver with a clean record and good credit, using a 100/300/100 full coverage policy with a $1,000 deductible. Additional profiles include young drivers, seniors and drivers with violations or poor credit.

See our methodology.

About Mark Fitzpatrick

Mark Fitzpatrick headshot

Mark Fitzpatrick, a Licensed Property and Casualty (P&C) Insurance Producer in Connecticut, is MoneyGeek's resident insurance expert. He has analyzed the insurance market for almost a decade, first with LendingTree and now with MoneyGeek, conducting original research on hundreds of insurance companies and millions of insurance rates for insurance shoppers. 

He writes about economics and insurance on MoneyGeek, breaking down complex topics so people can have confidence in their purchase. Like all MoneyGeek analysts, Mark collects and analyzes independent cost and consumer experience data on insurance companies to provide objective recommendations in our content that are independent of any of MoneyGeek's insurance company partnerships. 

His insights on products ranging from car, home and renters insurance to health and life insurance have been featured in The Washington Post, The New York Times and NPR, among others. 

Mark holds a master’s degree in economics and international relations from Johns Hopkins University and a bachelor’s degree from Boston College. He started his career working in financial risk management at State Street before transitioning to the analysis of the personal insurance market. He's also a five-time Jeopardy champion!

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