Earthquake Risk in Louisiana
All Louisiana counties ranked by FEMA National Risk Index earthquake score
Earthquake risk — ground shaking from sudden movement along geologic faults — is rated for 64 of 64 Louisiana counties in FEMA's National Risk Index. Ouachita Parish carries the state's highest earthquake score at 89.3, with $3M in expected annual earthquake losses.
No Louisiana county reaches the High band for earthquake, and expected annual losses from earthquake total roughly $23M statewide. The full ranking below links to each county's complete 18-hazard risk profile.
County Rankings — Earthquake
| # | County | Earthquake Score | Rating | Ann. Freq. | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Ouachita Parish | Low | 0.00 / yr | $3M | |
| 2 | Caddo Parish | Low | 0.00 / yr | $2M | |
| 3 | East Baton Rouge Parish | Low | 0.00 / yr | $2M | |
| 4 | Orleans Parish | Low | 0.00 / yr | $1M | |
| 5 | Jefferson Parish | Low | 0.00 / yr | $1M | |
| 6 | Morehouse Parish | Low | 0.00 / yr | $674K | |
| 7 | Rapides Parish | Low | 0.00 / yr | $776K | |
| 8 | Bossier Parish | Low | 0.00 / yr | $886K | |
| 9 | Webster Parish | Low | 0.00 / yr | $479K | |
| 10 | Lafayette Parish | Low | 0.00 / yr | $760K | |
| 11 | Lincoln Parish | Low | 0.00 / yr | $498K | |
| 12 | St. Tammany Parish | Low | 0.00 / yr | $724K | |
| 13 | Calcasieu Parish | Low | 0.00 / yr | $515K | |
| 14 | Tangipahoa Parish | Low | 0.00 / yr | $482K | |
| 15 | Richland Parish | Low | 0.00 / yr | $324K | |
| 16 | St. Landry Parish | Very Low | 0.00 / yr | $294K | |
| 17 | East Carroll Parish | Very Low | 0.00 / yr | $249K | |
| 18 | Ascension Parish | Very Low | 0.00 / yr | $433K | |
| 19 | Livingston Parish | Very Low | 0.00 / yr | $415K | |
| 20 | Natchitoches Parish | Very Low | 0.00 / yr | $282K | |
| 21 | West Carroll Parish | Very Low | 0.00 / yr | $258K | |
| 22 | Lafourche Parish | Very Low | 0.00 / yr | $296K | |
| 23 | Terrebonne Parish | Very Low | 0.00 / yr | $329K | |
| 24 | Washington Parish | Very Low | 0.00 / yr | $215K | |
| 25 | Franklin Parish | Very Low | 0.00 / yr | $232K | |
| 26 | Union Parish | Very Low | 0.00 / yr | $209K | |
| 27 | Avoyelles Parish | Very Low | 0.00 / yr | $192K | |
| 28 | Madison Parish | Very Low | 0.00 / yr | $163K | |
| 29 | Concordia Parish | Very Low | 0.00 / yr | $179K | |
| 30 | Claiborne Parish | Very Low | 0.00 / yr | $144K | |
| 31 | Acadia Parish | Very Low | 0.00 / yr | $170K | |
| 32 | Jackson Parish | Very Low | 0.00 / yr | $162K | |
| 33 | Iberia Parish | Very Low | 0.00 / yr | $163K | |
| 34 | St. Martin Parish | Very Low | 0.00 / yr | $136K | |
| 35 | St. Mary Parish | Very Low | 0.00 / yr | $150K | |
| 36 | De Soto Parish | Very Low | 0.00 / yr | $119K | |
| 37 | Bienville Parish | Very Low | 0.00 / yr | $106K | |
| 38 | Winn Parish | Very Low | 0.00 / yr | $99K | |
| 39 | Vernon Parish | Very Low | 0.00 / yr | $122K | |
| 40 | Evangeline Parish | Very Low | 0.00 / yr | $101K | |
| 41 | Catahoula Parish | Very Low | 0.00 / yr | $94K | |
| 42 | Pointe Coupee Parish | Very Low | 0.00 / yr | $99K | |
| 43 | East Feliciana Parish | Very Low | 0.00 / yr | $93K | |
| 44 | St. John the Baptist Parish | Very Low | 0.00 / yr | $131K | |
| 45 | Sabine Parish | Very Low | 0.00 / yr | $80K | |
| 46 | Tensas Parish | Very Low | 0.00 / yr | $77K | |
| 47 | Grant Parish | Very Low | 0.00 / yr | $107K | |
| 48 | LaSalle Parish | Very Low | 0.00 / yr | $109K | |
| 49 | St. Charles Parish | Very Low | 0.00 / yr | $114K | |
| 50 | Iberville Parish | Very Low | 0.00 / yr | $89K | |
| 51 | Red River Parish | Very Low | 0.00 / yr | $66K | |
| 52 | Vermilion Parish | Very Low | 0.00 / yr | $85K | |
| 53 | Beauregard Parish | Very Low | 0.00 / yr | $93K | |
| 54 | St. Bernard Parish | Very Low | 0.00 / yr | $99K | |
| 55 | Jefferson Davis Parish | Very Low | 0.00 / yr | $73K | |
| 56 | West Baton Rouge Parish | Very Low | 0.00 / yr | $111K | |
| 57 | St. James Parish | Very Low | 0.00 / yr | $60K | |
| 58 | Assumption Parish | Very Low | 0.00 / yr | $53K | |
| 59 | Allen Parish | Very Low | 0.00 / yr | $62K | |
| 60 | Plaquemines Parish | Very Low | 0.00 / yr | $64K | |
| 61 | St. Helena Parish | Very Low | 0.00 / yr | $38K | |
| 62 | Caldwell Parish | Very Low | 0.00 / yr | $50K | |
| 63 | West Feliciana Parish | Very Low | 0.00 / yr | $39K | |
| 64 | Cameron Parish | Very Low | 0.00 / yr | $10K |
64 Louisiana counties with measurable earthquake risk. See the national earthquake ranking or all Louisiana counties by overall risk.
Frequently Asked Questions
Which Louisiana county has the highest earthquake risk?
Ouachita Parish has the highest FEMA earthquake risk score in Louisiana at 89.3 (Low), with $3M in expected annual losses and about 0.00 events per year.
How many Louisiana counties face significant earthquake risk?
64 Louisiana counties record measurable earthquake risk in FEMA's National Risk Index; 0 of them are rated High or Very High.