Question 1

What is the average auto insurance cost in California?

Accepted Answer

The median 6-month auto insurance premium in California is $1,102. Premiums range from $618 to $5,974 depending on carrier, ZIP code, and coverage level. That's a 9.7x spread between the cheapest and most expensive areas.

Question 2

Which carrier is cheapest in California?

Accepted Answer

Liberty Mutual has the lowest median premium in California at $635/6mo. It's the #1 cheapest option in 2,593 ZIP codes (100% of the state). However, the cheapest carrier varies by ZIP code — compare all 13 carriers to find the best rate in your area.

Question 3

What are the most expensive ZIP codes in California?

Accepted Answer

The most expensive ZIP codes in California are 91203 (Glendale, $2,586/6mo), 91205 (Glendale, $2,546/6mo), 91335 (Reseda, $2,417/6mo). Urban areas and regions with higher accident rates tend to have the highest premiums.

Question 4

How many carriers does TrueFactor track in California?

Accepted Answer

TrueFactor tracks 13 auto insurance carriers across 2,593 ZIP codes in California. All data is sourced from SERFF regulatory rate filings — the official rate structures filed with the California Department of Insurance. Data covers filings from 2019 to present and is updated within days of regulatory approval.

Question 5

Why is auto insurance so expensive in some parts of California?

Accepted Answer

Auto insurance premiums in California vary by up to 9.7x between ZIP codes — from $618 to $5,974 per 6-month term. This variation is driven by territorial rating factors in each carrier's SERFF filing, which reflect local accident frequency, claim severity, theft rates, and repair costs. The most expensive ZIP code is 91203 (Glendale) at $2,586/6mo. Urban and high-density areas consistently have higher filed rates due to greater accident frequency.

#	Carrier	Median 6-Mo	#1 Cheapest In	% of ZIPs
1	Liberty Mutual	$635	2,593 ZIPs	100%
2	Farmers	$662	0 ZIPs	0%
3	USAA	$778	0 ZIPs	0%
4	Wawanesa	$972	0 ZIPs	0%
5	CSAA (AAA)	$1,026	0 ZIPs	0%
6	GEICO	$1,080	0 ZIPs	0%
7	Amica Mutual	$1,102	0 ZIPs	0%
8	Progressive	$1,134	0 ZIPs	0%
9	The Hartford	$1,134	0 ZIPs	0%
10	Nationwide	$1,188	0 ZIPs	0%
11	Travelers	$1,210	0 ZIPs	0%
12	State Farm	$2,037	0 ZIPs	0%
13	Allstate	$2,546	0 ZIPs	0%

City	Avg Median	ZIPs
San Ardo	$618	1
Etna	$633	1
Weed	$637	1
Quincy	$642	1
Covelo	$650	1

City	Avg Median	ZIPs
Camp Pendleton	$2,109	1
Glendale	$2,070	14
Reseda	$2,057	2
Panorama City	$2,055	2
Van Nuys	$2,041	13

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