Flood Insurance in California: What It Costs by County, Flood Zone and Buyer Type

The median flood insurance policy in California costs $1,053 per year, or $88 per month. That cost is composed of policyholders paying an average of $851 per year for their premium and $222 for surcharges and fees. This makes California the 23rd most expensive state based on median cost, near the middle of the pack.

The cost of the median flood insurance policy in California is a sum of four components: the premium, the reserve fund assessment, the federal policy fee and the HFIAA surcharge. The premium is the most substantial, but all affect the policyholder and contribute to the overall cost.

• Premium — $831 median: What policyholders pay their insurer for coverage. In exchange, the policyholder has the right to make a claim to be reimbursed for flood damage.
• Reserve fund assessment — $150 median: Goes toward paying NFIP losses and additional costs like reinsurance.
• Federal policy fee — $47 median: Covers NFIP administration costs.
• HFIAA surcharge — $25 median: Helps cover the cost of subsidized premiums within the NFIP.

Many Californians are able to get affordable flood insurance compared to the median rate. More than a quarter of policyholders in the state pay less than $750 per year, and the main reason is the flood zone. 88% of the 5,384 policies that cost more than $2,500 per year are in high-risk flood zones designated with the letter "A". Most of these flood zones are in the counties of Marin, Santa Clara, Los Angeles and San Mateo. But even within a given flood zone, there can be high variations in rates. FEMA prices homes based on their unique risks, and MoneyGeek found that risk pricing predicts about 60% of the difference in rates that Californians pay.

The median cost of flood insurance in California is $1,053 per year, which is $10 less than the rest of the country ($1,063). But the gap between California and the rest of the country's average flood insurance costs ($1,184 vs. $1,261) is wider. Overall, California flood insurance costs are slightly cheaper than the middle of the pack among states.

This ranking is driven by a low quantity of very expensive policies and a high quantity of policies in lower-risk areas. Only 5.4% of California policies cost $2,500 or more (compared to 7.7% in the rest of the country). And a large share of California policies are in low-risk areas: 33% of flood insurance policies are in Sacramento County, with a median cost of $834, dragging down the state's overall numbers.

The cost of a flood insurance policy is largely driven by the flood zone it's located in and details about the home itself that may make it more or less susceptible to flood damage, but MoneyGeek analyzed rates in different geographies to show how certain parts of the state can be more or less risky — and thus more or less expensive — than others.

The median cost of flood insurance depending on the county ranges from $664 to $1,633 per year, from $815 to $1,358 per year in its 8 most populous cities and from $831 to $1,749 per year depending on the type of flood zone.

Flood insurance costs can differ greatly depending on what county you live in: the median resident will pay $664 per year in Sutter County but also three times that in Marin County ($1,633). This is partly explained by the composition of flood zones but not totally: 94% of policies in Merced and Tulare are in high-risk zones, yet both are among the 5 cheapest counties by median cost.

FEMA's data doesn't provide transparency on why some policies in high-risk zones are cheaper than others, but the reasons are likely specific to the home itself, such as distance to bodies of water, the type of flooding that can happen, and ground elevation of the home compared to flood levels.

Of the eight largest cities in California, Long Beach has the highest median yearly cost at $1,358 and San Francisco the lowest at $815. The city with the most policies by far — over 28,000 — is Sacramento, which is more than the other 7 cities put together.

Apart from its coastal location, Long Beach likely has such high rates because only the riskiest homeowners are opting to buy a policy: the city only has 1,004 policies in force, suggesting that only those choosing to or required to get a flood policy have an outsized risk compared to other homes in the city that have foregone flood insurance.

*Fewer than 250 policies, so the median is less representative. Single-family owner-occupied NFIP policies in the city limits, Sept. 1, 2026.

Sacramento is a unique case because it holds a third of California's NFIP flood policies with a low median cost. The main reason is that 97% of the policies are in so-called "A99 zones." The letter A indicates it is a high-risk zone that mandates flood insurance coverage, but the number 99 indicates it is lower risk than other "A" areas. A Zone A99 has interim status in which the community is building or rebuilding flood protection infrastructure, and Sacramento has launched multiple levee reconstruction projects in recent decades.

Location is one of the most important factors affecting the cost of flood insurance, but not because the policies are priced based on your county, city or ZIP code — policies are actually priced by your flood zone and the specific risks unique to your home. How much flood insurance someone chooses to buy can also affect the cost of a policy, though the vast majority of buyers buy the maximum coverage available.

Many of the expensive policies in California are driven by the cost of flood insurance in high-risk zones (A, AE, AH, AO) that are at high risk of floods from rivers or heavy rain. 42% of policies in the state are in "A" zones, a plurality that drives rates in the state.

The next most common flood zones are lower-risk areas (X, B or C zones). In these areas homeowners aren't required to buy flood insurance, but despite being voluntary these policies make up 36% of all the policies in the state. Reflecting their lower-risk status, the median cost of a policy is $1,071 per year, almost $200 less than "A" zones.

The next most common flood zone are "A99" areas, representing 21% of policies. These are policies that previously were high-risk but in which the community has taken substantial steps toward alleviating flood risk, in this case largely because of levee-construction projects in Sacramento. The median cost per year in these areas is $831, below even low-risk zones.

Finally, coastal areas at risk of storm wave damage (V and VE zones) have the highest median cost of $1,749 per year. However, these policies only represent 0.4% of all NFIP flood policies in the state.

These costs by flood zone are overall medians and averages, but since 2021 FEMA has priced homes individually rather than charging the same for every home in a given flood zone. A flood insurance policy rate may now be affected by:

• Total distance to the water
• The height of the lowest floor versus the expected height of the flood
• Foundation type
• Rebuild cost
• Types of flooding the home is susceptible to (river overflow, heavy rain, storm surge)

This means that even two homes on the same street in California can have radically different pricing, so those looking for flood insurance should make sure to get an individual quote for their specific home.

In California and elsewhere, a NFIP policy covers a maximum of $250,000 in flood damage to the building itself and $100,000 in damage to personal belongings. This is largely because when flood insurance is required in high-risk zones, lenders mandate coverage equal to the amount of the loan or $250,000 (whichever is less). But even voluntary buyers often get the maximum: 93% of policies in X, B and C zones have bought the full $250,000.

Buying the full coverage is about $400 more expensive per year than buying coverage less than $100,000.

Most policies issued by the NFIP have a price that consumers actually pay and a "full risk price" — a price that reflects what the homeowner would pay if their flood risk were fully accounted for. This is a legacy of the fact that FEMA changed its pricing methods in 2021 and that flood policy costs cannot rise more than 18% per year.

About six in 10 flood insurance policyholders are already at the full risk rate, meaning their flood insurance costs are unlikely to rise greatly in coming years. But that means that four in 10 policyholders are below their full-risk rate, and will continue seeing 18% rate rises until they hit that target price.

In 2021, FEMA began pricing flood insurance policies not just by the flood zone but based on the risk for features of the particular home. But Congress prohibited rates from rising more than 18% per year.

For example, a home paying $900 per year with a full risk price of $1,300 will pay:

• Year 1: $1,062 (18% increase)
• Year 2: $1,253 (18% increase)
• Year 3: $1,300 — the full risk price

This assumes that the full-risk price stays at $1,300, which could change depending on FEMA's rating policy.

59% of policyholders pay their full risk price and 41% pay less than the full price. For the policies that don't pay the full price, the median difference between the current price and full price is $526 per year, meaning rates for these policies will rise hundreds of dollars in the coming years.

For those who are already at full price, MoneyGeek analyzed a sample of California policies renewing between 2022 and 2026 and found that price changes ranged from negative 6% to growth of 2% from one year to the next, indicating that those at the full risk prices are likely to see minor rate differences in the coming years.

For those who aren't at full price, they will see 18% rate increases until they match the full-risk rate, but have the benefit of lower rates than they would have if they had bought the policy today.

Shoppers should know that if they're buying a new home, it doesn't necessarily mean they have to pay the full-risk rate. A home seller can assign an NFIP policy to the new buyer, keeping the grandfathered lower rates and discounts. Homebuyers should ask the seller about this and request a declarations page and inform their agent and lender, as inheriting the policy could save them hundreds of dollars per year.

Flood insurance is a complex topic, whether you're trying to understand prices or regulations. MoneyGeek compiled some of the most common questions.