Louisiana Natural Disaster Risk by County

Most exposed counties, hazard by hazard

Top 10 by FEMA hazard risk score

Hurricane 64 rated

#	County	Rating	Loss a year
1	Jefferson Parish	Very High	$251 million
2	Orleans Parish	Very High	$223 million
3	St. Tammany Parish	Very High	$143 million
4	Lafayette Parish	Very High	$98 million
5	Terrebonne Parish	Very High	$89 million
6	Calcasieu Parish	Very High	$71 million
7	East Baton Rouge Parish	Very High	$67 million
8	Ascension Parish	Relatively High	$74 million
9	Tangipahoa Parish	Relatively High	$54 million
10	Lafourche Parish	Relatively High	$54 million

Tornado 64 rated

#	County	Rating	Loss a year
1	East Baton Rouge Parish	Very High	$52 million
2	Ouachita Parish	Relatively High	$10 million
3	Livingston Parish	Relatively High	$13 million
4	Calcasieu Parish	Relatively High	$11 million
5	Ascension Parish	Relatively High	$13 million
6	Lafourche Parish	Relatively High	$9.0 million
7	St. Landry Parish	Relatively High	$7.2 million
8	Terrebonne Parish	Relatively High	$8.6 million
9	Iberia Parish	Relatively High	$5.7 million
10	Tangipahoa Parish	Relatively High	$5.8 million

Inland flooding 64 rated

#	County	Rating	Loss a year
1	East Baton Rouge Parish	Relatively High	$103 million
2	Jefferson Parish	Relatively High	$76 million
3	Livingston Parish	Relatively High	$76 million
4	Calcasieu Parish	Relatively High	$58 million
5	St. Tammany Parish	Relatively High	$70 million
6	Orleans Parish	Relatively High	$47 million
7	Lafayette Parish	Relatively Moderate	$57 million
8	Caddo Parish	Relatively Moderate	$35 million
9	Tangipahoa Parish	Relatively Moderate	$34 million
10	St. Landry Parish	Relatively Moderate	$21 million

Coastal flooding 29 rated

#	County	Rating	Loss a year
1	Jefferson Parish	Very High	$11 million
2	St. Charles Parish	Very High	$13 million
3	Terrebonne Parish	Relatively High	$9.1 million
4	St. Mary Parish	Relatively High	$6.5 million
5	St. Martin Parish	Relatively High	$3.2 million
6	Cameron Parish	Relatively High	$3.6 million
7	Calcasieu Parish	Relatively High	$2.9 million
8	St. James Parish	Relatively High	$2.5 million
9	Plaquemines Parish	Relatively High	$2.8 million
10	St. Tammany Parish	Relatively High	$3.3 million

Wildfire 64 rated

#	County	Rating	Loss a year
1	Calcasieu Parish	Relatively Moderate	$1.2 million
2	St. Tammany Parish	Relatively Moderate	$1.4 million
3	Cameron Parish	Relatively Low	$815,298
4	Beauregard Parish	Relatively Low	$712,767
5	Washington Parish	Relatively Low	$249,255
6	Vernon Parish	Relatively Low	$313,837
7	Tangipahoa Parish	Relatively Low	$267,221
8	Rapides Parish	Relatively Low	$255,040
9	Allen Parish	Relatively Low	$255,914
10	Evangeline Parish	Relatively Low	$103,863

Earthquake 64 rated

#	County	Rating	Loss a year
1	Ouachita Parish	Relatively Low	$3.5 million
2	Caddo Parish	Relatively Low	$1.9 million
3	East Baton Rouge Parish	Relatively Low	$2.2 million
4	Orleans Parish	Relatively Low	$1.4 million
5	Jefferson Parish	Relatively Low	$1.2 million
6	Morehouse Parish	Relatively Low	$674,300
7	Rapides Parish	Relatively Low	$776,375
8	Bossier Parish	Relatively Low	$886,498
9	Webster Parish	Relatively Low	$478,694
10	Lafayette Parish	Relatively Low	$760,284

Every Louisiana county, highest overall risk first

64

Find a county:

#	County	Overall risk	Score	Loss a year	Top hazard	Declarations	Tornadoes
1	Jefferson Parish	Relatively High	98.7	$371 million	Hurricane	48	70
2	Orleans Parish	Relatively High	98.3	$304 million	Hurricane	37	24
3	East Baton Rouge Parish	Relatively High	98.0	$267 million	Tornado	45	47
4	St. Tammany Parish	Relatively High	96.6	$249 million	Hurricane	48	72
5	Calcasieu Parish	Relatively High	95.7	$164 million	Lightning	40	112
6	Lafayette Parish	Relatively High	95.2	$190 million	Lightning	41	43
7	Livingston Parish	Relatively High	94.5	$166 million	Hurricane	50	46
8	Terrebonne Parish	Relatively Moderate	94.2	$141 million	Hurricane	51	37
9	Tangipahoa Parish	Relatively Moderate	93.3	$107 million	Hurricane	46	76
10	Caddo Parish	Relatively Moderate	92.6	$89 million	Ice storm	33	100
11	Ascension Parish	Relatively Moderate	92.1	$120 million	Hurricane	56	22
12	Lafourche Parish	Relatively Moderate	91.3	$83 million	Hurricane	52	41
13	Iberia Parish	Relatively Moderate	90.6	$64 million	Hurricane	41	29
14	St. Mary Parish	Relatively Moderate	88.9	$61 million	Hurricane	47	24
15	Acadia Parish	Relatively Moderate	88.6	$51 million	Hurricane	40	88
16	St. Landry Parish	Relatively Moderate	88.2	$50 million	Drought	44	71
17	Ouachita Parish	Relatively Moderate	87.5	$50 million	Ice storm	42	47
18	St. Martin Parish	Relatively Moderate	87.3	$47 million	Hurricane	52	26
19	Washington Parish	Relatively Moderate	85.5	$35 million	Hurricane	39	37
20	St. Charles Parish	Relatively Moderate	85.1	$57 million	Hurricane	50	23
21	Vermilion Parish	Relatively Moderate	84.8	$44 million	Drought	44	62
22	Rapides Parish	Relatively Moderate	84.3	$40 million	Lightning	47	82
23	Bossier Parish	Relatively Moderate	82.5	$48 million	Ice storm	34	72
24	St. John the Baptist Parish	Relatively Moderate	81.5	$46 million	Hurricane	44	23
25	Evangeline Parish	Relatively Low	75.9	$23 million	Cold wave	33	41
26	St. Bernard Parish	Relatively Low	75.6	$35 million	Hurricane	46	16
27	Jefferson Davis Parish	Relatively Low	74.3	$28 million	Drought	40	51
28	Iberville Parish	Relatively Low	73.7	$27 million	Hurricane	45	22
29	Avoyelles Parish	Relatively Low	73.0	$20 million	Drought	40	54
30	Plaquemines Parish	Relatively Low	72.9	$28 million	Hurricane	43	37
31	St. James Parish	Relatively Low	71.0	$23 million	Hurricane	42	10
32	Assumption Parish	Relatively Low	70.3	$20 million	Drought	47	21
33	Webster Parish	Relatively Low	69.5	$18 million	Ice storm	35	59
34	Vernon Parish	Relatively Low	68.9	$22 million	Hurricane	37	55
35	Lincoln Parish	Relatively Low	64.3	$17 million	Ice storm	33	30
36	Pointe Coupee Parish	Relatively Low	63.1	$16 million	Cold wave	45	26
37	Sabine Parish	Relatively Low	61.0	$14 million	Strong wind	31	39
38	Natchitoches Parish	Relatively Low	56.4	$13 million	Strong wind	39	64
39	East Feliciana Parish	Relatively Low	56.4	$13 million	Hurricane	39	18
40	Beauregard Parish	Relatively Low	55.6	$17 million	Lightning	41	62
41	Morehouse Parish	Relatively Low	55.3	$11 million	Ice storm	33	44
42	Allen Parish	Relatively Low	50.7	$14 million	Hurricane	38	27
43	Union Parish	Relatively Low	49.7	$11 million	Ice storm	34	51
44	De Soto Parish	Very Low	42.0	$9.1 million	Strong wind	31	71
45	Claiborne Parish	Very Low	41.7	$7.3 million	Ice storm	32	30
46	Richland Parish	Very Low	36.7	$7.5 million	Drought	34	39
47	St. Helena Parish	Very Low	36.3	$6.9 million	Drought	37	24
48	Franklin Parish	Very Low	35.9	$7.8 million	Drought	40	31
49	West Feliciana Parish	Very Low	34.7	$9.6 million	Hurricane	42	11
50	Cameron Parish	Very Low	33.7	$11 million	Lightning	37	67
51	Madison Parish	Very Low	32.4	$6.2 million	Drought	31	56
52	West Baton Rouge Parish	Very Low	31.8	$13 million	Hurricane	36	11
53	Concordia Parish	Very Low	31.6	$6.8 million	Drought	35	37
54	Grant Parish	Very Low	29.6	$8.3 million	Heat wave	35	29
55	Winn Parish	Very Low	29.5	$5.8 million	Heat wave	31	41
56	Bienville Parish	Very Low	28.7	$5.7 million	Ice storm	33	46
57	Jackson Parish	Very Low	26.2	$5.6 million	Ice storm	25	41
58	East Carroll Parish	Very Low	21.6	$4.5 million	Drought	30	29
59	Catahoula Parish	Very Low	17.0	$4.0 million	Drought	43	34
60	Red River Parish	Very Low	16.7	$4.0 million	Strong wind	30	24
61	West Carroll Parish	Very Low	15.4	$4.2 million	Drought	29	29
62	Tensas Parish	Very Low	14.5	$3.6 million	Drought	27	27
63	LaSalle Parish	Very Low	12.2	$5.0 million	Hurricane	36	25
64	Caldwell Parish	Very Low	10.5	$3.9 million	Hurricane	36	20

Score: FEMA's national percentile (higher = more risk). Declarations: federal declarations that named the county since 1953, not counting COVID-19. Tornadoes: NOAA SPC tornadoes that touched the county, 1950–2025.

Latest federal declarations in Louisiana

Tropical Storm Arthur DR-4927-LA · Tropical Storm · declared 30 Jun 2026 · 9 counties

Severe Winter Storm DR-4900-LA · Winter Storm · declared 18 Feb 2026 · 18 counties

Severe Winter Storm EM-3638-LA · Winter Storm · declared 24 Jan 2026 · 64 counties

Hurricane Francine DR-4817-LA · Hurricane · declared 16 Sep 2024 · 22 counties

Tropical Storm Francine EM-3614-LA · Hurricane · declared 10 Sep 2024 · 64 counties

Seawater Intrusion EM-3600-LA · Other · declared 27 Sep 2023 · 5 counties

Highway 113 Fire FM-5486-LA · Fire · declared 30 Aug 2023 · 2 counties

Lions Camp Road Fire FM-5485-LA · Fire · declared 27 Aug 2023 · 1 county

Other states and territories

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What this page shows, and what it misses

FEMA's National Risk Index compares every US county with every other for 18 natural hazards, combining expected losses with social vulnerability and community resilience. It is a planning-level estimate for nationwide comparison, not a flood-zone map and not the risk to any one property — for flood zones use FEMA's Flood Map Service Center ↗. Federal declarations exclude state declarations and SBA or USDA designations.

Federal Emergency Management Agency (FEMA), National Risk Index Dataset: National Risk Index Counties - v1.20.0 (December 2025). Retrieved from https://services.arcgis.com/XG15cJAlne2vxtgt/ArcGIS/rest/services/National_Risk_Index_Counties/FeatureServer/0/query on November 2, 2026, 1:20 PM EST. This product uses the Federal Emergency Management Agency’s National Risk Index dataset API or downloadable datasets but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Federal Emergency Management Agency (FEMA), OpenFEMA Dataset: Disaster Declarations Summaries - v2, retrieved from https://www.fema.gov/api/open/v2/DisasterDeclarationsSummaries on November 2, 2026, 1:21 PM EST. This product uses the Federal Emergency Management Agency's OpenFEMA API, but is not endorsed by FEMA. The Federal Government or FEMA cannot vouch for the data or analyses derived from these data after the data have been retrieved from the Agency's website(s).

Tornado records: NOAA/NWS Storm Prediction Center, Severe Weather Database, tornadoes 1950–2025 (https://www.spc.noaa.gov/wcm/data/1950-2025_actual_tornadoes.csv, downloaded 2 November 2026). Public domain; not endorsed by NOAA. Compiled by Global Incident Tracker.

Questions about Louisiana

Which county in Louisiana has the highest natural disaster risk?

Of Louisiana's 64 counties, 0 have a Very High natural-hazard risk rating in FEMA's National Risk Index (v1.20, December 2025); the highest is Jefferson Parish (score 98.7 of 100), and expected losses across the state total $3.3 billion a year.

Which Louisiana counties are most at risk from tornadoes?

By FEMA's National Risk Index tornado risk score: East Baton Rouge Parish, Ouachita Parish, Livingston Parish. These are planning-level estimates for whole counties, not maps of individual properties.

Which Louisiana counties are most at risk from hurricanes?

By FEMA's National Risk Index hurricane risk score: Jefferson Parish, Orleans Parish, St. Tammany Parish. These are planning-level estimates for whole counties, not maps of individual properties.

How many FEMA disaster declarations has Louisiana had?

OpenFEMA lists 108 federal disaster, emergency and fire management declarations for Louisiana since 1953 (not counting COVID-19); the latest is DR-4927-LA, Tropical Storm Arthur, declared 30 June 2026.