Earthquake Risk in Colorado
All Colorado 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 Colorado counties in FEMA's National Risk Index. Denver County carries the state's highest earthquake score at 91.0, with $7M in expected annual earthquake losses.
No Colorado county reaches the High band for earthquake, and expected annual losses from earthquake total roughly $41M 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 | Denver County | Medium | 0.00 / yr | $7M | |
| 2 | Arapahoe County | Low | 0.00 / yr | $4M | |
| 3 | Mesa County | Low | 0.00 / yr | $3M | |
| 4 | Adams County | Low | 0.00 / yr | $3M | |
| 5 | Jefferson County | Low | 0.00 / yr | $3M | |
| 6 | Alamosa County | Low | 0.00 / yr | $1M | |
| 7 | Larimer County | Low | 0.00 / yr | $3M | |
| 8 | Boulder County | Low | 0.00 / yr | $2M | |
| 9 | Weld County | Low | 0.00 / yr | $2M | |
| 10 | Montrose County | Low | 0.00 / yr | $1M | |
| 11 | El Paso County | Low | 0.00 / yr | $2M | |
| 12 | La Plata County | Low | 0.00 / yr | $975K | |
| 13 | Rio Grande County | Low | 0.00 / yr | $448K | |
| 14 | Delta County | Low | 0.00 / yr | $604K | |
| 15 | Pueblo County | Low | 0.00 / yr | $657K | |
| 16 | Douglas County | Low | 0.00 / yr | $779K | |
| 17 | Garfield County | Low | 0.00 / yr | $626K | |
| 18 | Montezuma County | Low | 0.00 / yr | $415K | |
| 19 | Eagle County | Very Low | 0.00 / yr | $443K | |
| 20 | Moffat County | Very Low | 0.00 / yr | $360K | |
| 21 | Broomfield County | Very Low | 0.00 / yr | $381K | |
| 22 | Routt County | Very Low | 0.00 / yr | $356K | |
| 23 | Summit County | Very Low | 0.00 / yr | $326K | |
| 24 | Grand County | Very Low | 0.00 / yr | $288K | |
| 25 | Conejos County | Very Low | 0.00 / yr | $151K | |
| 26 | Archuleta County | Very Low | 0.00 / yr | $171K | |
| 27 | Fremont County | Very Low | 0.00 / yr | $133K | |
| 28 | Gunnison County | Very Low | 0.00 / yr | $246K | |
| 29 | Rio Blanco County | Very Low | 0.00 / yr | $148K | |
| 30 | Morgan County | Very Low | 0.00 / yr | $184K | |
| 31 | Chaffee County | Very Low | 0.00 / yr | $183K | |
| 32 | Pitkin County | Very Low | 0.00 / yr | $202K | |
| 33 | Saguache County | Very Low | 0.00 / yr | $109K | |
| 34 | Costilla County | Very Low | 0.00 / yr | $67K | |
| 35 | Otero County | Very Low | 0.00 / yr | $82K | |
| 36 | Logan County | Very Low | 0.00 / yr | $90K | |
| 37 | Dolores County | Very Low | 0.00 / yr | $84K | |
| 38 | Elbert County | Very Low | 0.00 / yr | $133K | |
| 39 | San Miguel County | Very Low | 0.00 / yr | $123K | |
| 40 | Park County | Very Low | 0.00 / yr | $106K | |
| 41 | Kit Carson County | Very Low | 0.00 / yr | $72K | |
| 42 | Prowers County | Very Low | 0.00 / yr | $47K | |
| 43 | Lake County | Very Low | 0.00 / yr | $94K | |
| 44 | Ouray County | Very Low | 0.00 / yr | $85K | |
| 45 | Las Animas County | Very Low | 0.00 / yr | $44K | |
| 46 | Huerfano County | Very Low | 0.00 / yr | $34K | |
| 47 | Clear Creek County | Very Low | 0.00 / yr | $66K | |
| 48 | Gilpin County | Very Low | 0.00 / yr | $50K | |
| 49 | Teller County | Very Low | 0.00 / yr | $52K | |
| 50 | Washington County | Very Low | 0.00 / yr | $30K | |
| 51 | Crowley County | Very Low | 0.00 / yr | $27K | |
| 52 | Phillips County | Very Low | 0.00 / yr | $40K | |
| 53 | Baca County | Very Low | 0.00 / yr | $16K | |
| 54 | Lincoln County | Very Low | 0.00 / yr | $29K | |
| 55 | Jackson County | Very Low | 0.00 / yr | $22K | |
| 56 | Yuma County | Very Low | 0.00 / yr | $28K | |
| 57 | Bent County | Very Low | 0.00 / yr | $25K | |
| 58 | Mineral County | Very Low | 0.00 / yr | $22K | |
| 59 | Sedgwick County | Very Low | 0.00 / yr | $16K | |
| 60 | Custer County | Very Low | 0.00 / yr | $22K | |
| 61 | Kiowa County | Very Low | 0.00 / yr | $17K | |
| 62 | San Juan County | Very Low | 0.00 / yr | $15K | |
| 63 | Hinsdale County | Very Low | 0.00 / yr | $12K | |
| 64 | Cheyenne County | Very Low | 0.00 / yr | $9K |
64 Colorado counties with measurable earthquake risk. See the national earthquake ranking or all Colorado counties by overall risk.
Frequently Asked Questions
Which Colorado county has the highest earthquake risk?
Denver County has the highest FEMA earthquake risk score in Colorado at 91.0 (Medium), with $7M in expected annual losses and about 0.00 events per year.
How many Colorado counties face significant earthquake risk?
64 Colorado counties record measurable earthquake risk in FEMA's National Risk Index; 0 of them are rated High or Very High.