| Top 10 Costliest U.S. Earthquakes By Inflation-Adjusted Insured Losses (1) |
($ millions)
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Insured losses (1) |
| Rank |
Date |
Event |
Location |
When occurred |
In 2025 dollars (2) |
| 1 |
Jan. 17, 1994 |
Northridge |
CA |
$15,300 |
$33,991 |
| 2 |
Apr. 18, 1906 |
San Francisco |
CA |
235 |
8,753 |
| 3 |
Oct. 18, 1989 |
Loma Prieta |
CA |
960 |
2,483 |
| 4 |
Feb. 28, 2001 |
Nisqually |
WA |
315 |
582 |
| 5 |
Jan. 7, 2020 |
Puerto Rico |
PR |
425 |
535 |
| 6 |
May 18, 1980 |
Mount St. Helens |
WA |
71 |
282 |
| 7 |
Aug. 24, 2014 |
South Napa |
CA |
200 |
273 |
| 8 |
Feb. 9, 1971 |
San Fernando |
CA |
32 |
257 |
| 9 |
Oct. 1, 1987 |
Whittier Narrows |
CA |
75 |
211 |
| 10 |
Nov. 30, 2018 |
Anchorage |
AK |
150 |
193 |
(1) Includes losses sustained by private insurers and government-sponsored programs such as the National Flood °µÍø½ûÇø Program. Subject to change as loss estimates are further developed. As of January 2026.
(2) Adjusted for inflation by Aon using the U.S. Consumer Price Index.
Source: Aon. |
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