DisasterAtlasUSA

This is a record of past federal disaster declarations, not a forecast. Federal assistance figures are aid obligated under specific programs, not total damages. For current threats, check the National Weather Service and FEMA.

Home / Flood Insurance Claims / California / San Mateo County

San Mateo County Flood Insurance Claims

National Flood Insurance Program, 19782026 · 13th highest paid in California

Claims
1,110
Total paid
$20.1M
Average / claim
$18K
Building / contents
$16.6M / $3.5M

Paid by decade

1970s$29K · 34 claims
1980s$1.7M · 337 claims
1990s$4.0M · 306 claims
2000s$2.7M · 110 claims
2010s$2.2M · 141 claims
2020s$9.5M · 182 claims

Worst years by dollars paid

2022$6.0M97 claims
1998$3.8M236 claims
2021$2.6M44 claims
2005$1.3M17 claims
2014$1.1M35 claims

Full disaster history for San Mateo County

Most-paid counties in California

Source: FEMA OpenFEMA, NFIP Redacted Claims v3 (OpenFEMA NfipClaims v3, retrieved 2026-09) — dollars actually paid on closed claims, summed from individual claim transactions. This is a record of the past. It is not a flood-risk forecast, an insurance rating, or a judgment about any specific property. For current risk see FEMA's Flood Map Service Center and National Risk Index.