How Your ZIP Code Affects Car Insurance Rates

By the AutoQuotesByZip editorial team. Last reviewed: October 4, 2026. Data: NICB, IRC, IIHS, NAIC.

Insurers set prices from the cost of claims, and claims are local. Your ZIP code tells an insurer how often cars near you are stolen, how often drivers there crash, how many of them are uninsured, how exposed the area is to hail or flooding, and how much repairs cost. Here is what the data show and what you can do about it.

Theft: where cars are stolen most

NICB counted 659,880 vehicle thefts nationwide in 2025, 23% fewer than in 2024. Thefts are concentrated: the ten metros above account for more than a third of the national total. The highest theft rates were in San Francisco–Oakland–Fremont (477.51 per 100,000 people), Bakersfield (477.27) and Memphis (427.75). Theft mainly affects comprehensive premiums, so a car garaged in a high-theft ZIP code pays more for comprehensive, not for liability. Source: NICB.

Uninsured drivers

The Insurance Research Council estimates that 15.4% of U.S. drivers were uninsured in 2023, ranging from 5.7% in Maine to 28.2% in Mississippi. Where uninsured drivers are common, uninsured motorist claims are more frequent and that coverage costs more. See every state on our uninsured motorist page.

Crash frequency and severity

IIHS data for 2024 show traffic deaths per 100 million miles traveled ranging from 0.59 in Massachusetts to 1.81 in Mississippi and 1.74 in Arizona (U.S.: 1.19). Within a state, dense urban ZIP codes tend to have more frequent, lower-speed crashes, while rural areas see fewer but more severe ones. Both shape liability and collision prices. Source: IIHS.

Weather and repair costs

NAIC’s 2024 averages show how weather exposure shows up in comprehensive premiums: $534 in South Dakota, $521 in Colorado and $455 in Texas, against $128 in Hawaii. Collision premiums reflect repair and labor costs, from $718 in California to $339 in Iowa. See average car insurance cost by state.

Where ZIP-based pricing is limited

Michigan’s 2019 reform prohibits insurers from using ZIP codes as a rating factor. California’s Proposition 103 requires driving record, mileage and experience to outweigh optional factors such as location. Massachusetts lets insurers use the place of garaging for rating but not for deciding whether to insure you. Elsewhere, territory rating is common; the Texas Department of Insurance notes that rates can differ between ZIP codes within one city. Sources: Michigan DIFS, 10 CCR §2632.5, Mass.gov, TDI.

What you can control

• Always quote the true garaging address; misstating it can void claims.
• Compare several insurers — each weighs location differently, so the cheapest insurer in one ZIP code may not be the cheapest in the next.
• If you live in a high-theft area, ask about anti-theft discounts and consider a higher comprehensive deductible rather than dropping the coverage.
• Re-shop when you move, even within the same city.

Use our step-by-step comparison method to keep quotes like for like.

Home insurance quotes by ZIP code

Sources

1. NICB, U.S. vehicle thefts experience historic decline (2025 data)
2. Insurance Information Institute, Facts + Statistics: Uninsured motorists (Insurance Research Council estimates for 2023)
3. IIHS-HLDI, Fatality facts 2024: State by state
4. NAIC, 2024 Auto Insurance Database Average Premium Supplement
5. Michigan DIFS — Auto insurance FAQ
6. 10 CCR §2632.5
7. Mass.gov — Basics of auto insurance
8. Texas Department of Insurance — Auto insurance guide

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