Orange County, California flood claims by city: the FEMA record, ranked
Orange County floods in winter, and it floods unevenly. A few low-lying coastal cities and one canyon town carry most of the county's flood insurance record, while much of the inland county has barely any.
FEMA's National Flood Insurance Program records 3,704 claims across Orange County's cities and its unincorporated area. Huntington Beach alone accounts for 943, a quarter of the total, and 3,309 claims, 89.3 per cent, are for losses between December and March. Since 2010 the city with the most claims has been Laguna Beach. This page ranks every city from FEMA's OpenFEMA data, sets out the storms behind the record, and explains what it means for owners and renters.
The short version
- FEMA records 3,704 flood insurance claims across Orange County's cities and unincorporated area; Huntington Beach has 943 of them.
- 89.3 per cent of claims are for losses between December and March.
- The busiest days were 6 December 1997 (340 claims), 2 March 1983 (306) and 3 to 4 January 1995 (369).
- Laguna Beach has had more claims than any other community since 2010, and the most repeat-flood properties.
- 39.1 per cent of claims with a recorded flood zone were for buildings outside the high-risk zone.
What the numbers are, and what they are not
The claim counts on this page come from FEMA's OpenFEMA release of National Flood Insurance Program claims, current to 8 September 2026, grouped by the NFIP community each claim was filed in: the county's cities and the unincorporated county, which FEMA lists as Orange County. Laguna Woods has no claims on record. FEMA codes 135 further claims to the county but files them under communities outside it, and they are left out. Multiple-loss counts come from FEMA's NFIP Multiple Loss Properties dataset as it stood on 21 October 2026. Two cautions. A claim count covers the whole life of the programme, since 1978, and one building can claim more than once, so it measures how much insured buildings have flooded, not how many buildings flood. And only insured losses appear, so a city where few people carry flood insurance will look drier than it is.
The ranking: lifetime NFIP claims by city
Huntington Beach 943. Santa Ana 417. Unincorporated Orange County 416. Laguna Beach 348. Newport Beach 289. Fountain Valley 239. Garden Grove 167. Westminster 163. Seal Beach 130. Costa Mesa 125. San Clemente 84. Anaheim 48. Irvine 43. Dana Point 43. San Juan Capistrano 33. Fullerton 32. Orange 30. Yorba Linda 25. Buena Park 20. Laguna Niguel 15. Placentia, Mission Viejo 12 each. Lake Forest, Villa Park, La Habra 11 each. Stanton 8. La Palma 7. Tustin, Cypress 6 each. Laguna Hills 5. Brea 2. Rancho Santa Margarita, Aliso Viejo, Los Alamitos 1 each. The top five carry 2,413 claims, almost two thirds of the county total. Within Huntington Beach the record is concentrated further still: 593 of the city's 943 claims carry the ZIP code 92646. In Santa Ana, 239 of 417 are in 92704.
A winter flood county
Of the 3,704 claims, 1,077 are for losses in January, 960 in February, 659 in December and 613 in March, which together make 3,309, or 89.3 per cent. The summer months barely register: 31 claims in July and 29 in September across the whole county. The heaviest years were 1995 with 610 claims, 1998 with 567, 1983 with 469 and 1997 with 431, and the busiest single days were 6 December 1997 with 340 claims, 2 March 1983 with 306, and 3 and 4 January 1995 with 369 between them. FEMA tags 100 claims on 23 February 1998 to a storm it names the Southern Pineapple Express. The pattern for a household is clear. Check gutters, drains and the ground around the house in autumn, before the first big winter storm, and expect the risk to run from December into March.
The low coast: Huntington Beach, Seal Beach, Newport Beach
The largest floods on record hit the low-lying coastal cities hardest. On 2 March 1983, 150 of the 306 claims in the county were in Huntington Beach. On 6 December 1997, Huntington Beach had 102, Laguna Beach 51 and Newport Beach 40. In the January 1995 storms, Huntington Beach had 103 claims across the two days, Santa Ana 73 and Westminster 45, so the flooding reached well inland. Seal Beach's worst day was different: 29 claims on 27 January 1983. FEMA's multiple-loss list, as of 21 October 2026, names 13 Seal Beach properties that have flooded more than once, 8 in Huntington Beach and 8 in Newport Beach. FEMA rates 60 of the county's claims in V zones, the coastal high-hazard zones where waves add to the flooding.
Laguna Beach and the canyon
Laguna Beach floods for a different reason. Of its 348 claims, 322 carry the ZIP code 92651, and the city has had 95 claims since 2010, more than any other Orange County community. Its worst recent day was 22 December 2010, when FEMA logged 41 Laguna Beach claims. Laguna Beach Patch, a year later, recorded damage to some 90 homes and 70 businesses in Laguna Canyon and downtown, and quoted the city manager saying the rain that saturated the hillsides in the days before was a big factor. One business owner described the canyon as a big funnel with all the water coming down through it. FEMA's multiple-loss list names 31 Laguna Beach properties that have flooded more than once, the most in the county, and 5 of the county's 9 severe repetitive loss properties.
Inland: Santa Ana, Anaheim, Irvine and the river
The Santa Ana River crosses the county and reaches the sea between Huntington Beach and Newport Beach. Prado Dam, upstream on the river, was built by the US Army Corps of Engineers in 1941 after the 1938 flood, and the later Santa Ana River Mainstem Project raised its embankment 28.4 feet and enlarged the reservoir from 217,000 to 362,000 acre-feet. Inland cities show far smaller records: Anaheim has 48 claims and Irvine 43, despite their size. Irvine's worst days were 6 and 7 February 1998, with 13 claims between them. Santa Ana is the inland exception, with 417 claims, 73 of them in the January 1995 storms. A small claim record is not the same as no water damage. In those cities, burst pipes, appliance leaks and roof leaks in winter storms are covered, or not, by a homeowners policy rather than flood insurance.
What this means if you own or rent here
Look up your address on the FEMA Flood Map Service Center first. Then consider the zone you are not in. FEMA records the rated flood zone for 3,143 of the county's claims, and 1,229 of them, 39.1 per cent, were for buildings in zones B, C or X, the moderate and minimal risk zones where a lender does not require flood insurance. A standard homeowners policy does not cover flood, and FEMA states that a new flood policy normally takes 30 days to begin, so buying one when the storm is already forecast is too late for that storm. Renters can buy contents cover of their own. If water does get in, keep out of it until the power is off, treat water from the street or a drain as contaminated, photograph everything before it is moved, and get the building drying quickly. Whether a particular loss is paid is decided by your insurer and your policy wording.
Common questions
Which Orange County city has the most flood claims?
Huntington Beach, with 943 of the county's 3,704 FEMA flood insurance claims, followed by Santa Ana with 417 and the unincorporated county with 416. Since 2010, Laguna Beach has had the most, with 95.
When does Orange County flood?
In winter. 89.3 per cent of the county's flood insurance claims are for losses between December and March, and the worst single days on record were 6 December 1997, 2 March 1983 and 3 to 4 January 1995.
Do Irvine and Anaheim flood?
Much less than the coast. FEMA records 43 flood insurance claims in Irvine and 48 in Anaheim. A small flood record is not the same as no water damage: leaks from pipes, appliances and roofs are a homeowners policy matter, not a flood one.
Do I need flood insurance in Orange County outside a flood zone?
It is worth considering. Of the county's claims with a recorded flood zone, 39.1 per cent were for buildings in moderate or minimal risk zones where flood insurance is not required. A new policy normally takes 30 days to begin.
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