Earthquake Risk in Wyoming
All Wyoming counties ranked by FEMA National Risk Index earthquake score
Earthquake risk — ground shaking from sudden movement along geologic faults — is rated for 23 of 23 Wyoming counties in FEMA's National Risk Index. Lincoln County carries the state's highest earthquake score at 87.8, with $4M in expected annual earthquake losses.
No Wyoming county reaches the High band for earthquake, and expected annual losses from earthquake total roughly $24M 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 | Lincoln County | Low | 0.03 / yr | $4M | |
| 2 | Teton County | Low | 0.04 / yr | $5M | |
| 3 | Fremont County | Low | 0.01 / yr | $3M | |
| 4 | Natrona County | Low | 0.00 / yr | $3M | |
| 5 | Park County | Low | 0.05 / yr | $1M | |
| 6 | Sublette County | Low | 0.01 / yr | $1M | |
| 7 | Campbell County | Low | 0.00 / yr | $1M | |
| 8 | Washakie County | Low | 0.00 / yr | $656K | |
| 9 | Laramie County | Low | 0.00 / yr | $903K | |
| 10 | Sweetwater County | Low | 0.00 / yr | $728K | |
| 11 | Sheridan County | Low | 0.00 / yr | $649K | |
| 12 | Uinta County | Low | 0.01 / yr | $719K | |
| 13 | Albany County | Low | 0.00 / yr | $576K | |
| 14 | Big Horn County | Low | 0.00 / yr | $425K | |
| 15 | Hot Springs County | Low | 0.00 / yr | $352K | |
| 16 | Carbon County | Low | 0.00 / yr | $430K | |
| 17 | Johnson County | Very Low | 0.00 / yr | $387K | |
| 18 | Converse County | Very Low | 0.00 / yr | $347K | |
| 19 | Platte County | Very Low | 0.00 / yr | $108K | |
| 20 | Goshen County | Very Low | 0.00 / yr | $144K | |
| 21 | Weston County | Very Low | 0.00 / yr | $98K | |
| 22 | Crook County | Very Low | 0.00 / yr | $68K | |
| 23 | Niobrara County | Very Low | 0.00 / yr | $45K |
23 Wyoming counties with measurable earthquake risk. See the national earthquake ranking or all Wyoming counties by overall risk.
Frequently Asked Questions
Which Wyoming county has the highest earthquake risk?
Lincoln County has the highest FEMA earthquake risk score in Wyoming at 87.8 (Low), with $4M in expected annual losses and about 0.03 events per year.
How many Wyoming counties face significant earthquake risk?
23 Wyoming counties record measurable earthquake risk in FEMA's National Risk Index; 0 of them are rated High or Very High.