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US Counties With the Highest Flood Risk

These counties face the highest riverine flooding risk in the US per FEMA's National Risk Index. Flood risk reflects both the frequency of flooding and the potential consequences to people and property. Standard homeowners insurance does not cover flood damage.

# County Flood risk
1 Los Angeles County 1.0
2 Cook County 1.0
3 Harris County 1.0
4 Maricopa County 1.0
5 San Diego County 1.0
6 Orange County 1.0
7 Kings County 1.0
8 Miami-Dade County 1.0
9 Dallas County 1.0
10 Riverside County 1.0
11 Queens County 1.0
12 King County 1.0
13 Clark County 1.0
14 San Bernardino County 1.0
15 Tarrant County 1.0
16 Bexar County 1.0
17 Broward County 1.0
18 Santa Clara County 1.0
19 Wayne County 1.0
20 New York County 1.0
21 Alameda County 1.0
22 Middlesex County 1.0
23 Philadelphia County 1.0
24 Sacramento County 1.0
25 Suffolk County 1.0
26 Palm Beach County 1.0
27 Bronx County 1.0
28 Hillsborough County 1.0
29 Orange County 1.0
30 Nassau County 1.0
31 Franklin County 1.0
32 Travis County 1.0
33 Hennepin County 1.0
34 Oakland County 1.0
35 Cuyahoga County 1.0
36 Allegheny County 1.0
37 Salt Lake County 1.0
38 Contra Costa County 1.0
39 Fairfax County 1.0
40 Wake County 1.0
41 Mecklenburg County 1.0
42 Fulton County 1.0
43 Collin County 1.0
44 Montgomery County 1.0
45 Pima County 1.0
46 Honolulu County 1.0
47 Fresno County 1.0
48 St. Louis County 1.0
49 Westchester County 1.0
50 Duval County 1.0

Source: FEMA National Risk Index. Scores normalized 1–10. City scores inherit county-level FEMA data. For informational purposes only.

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