Wyoming natural disaster risk
Ratings for all 23 counties, the federal disaster record and flood insurance across the state.
Wyoming has had 14 major federal disaster declarations for natural events since 1953. FEMA expects about $344 million a year in losses from natural hazards across the state. Inland flooding is the costliest hazard in 20 of its 23 counties, followed by avalanche in 2. None is rated Very High overall. About 0.5% of homes carry federal flood insurance, and the program has paid $3.7 million on 551 claims here since 1978.
Top hazards
Largest counties
Laramie County
100,483 people
Inland floodingNatrona County
79,870 people
Inland floodingCampbell County
47,000 people
Cold waveSweetwater County
42,238 people
Inland floodingFremont County
39,175 people
Inland floodingAlbany County
37,019 people
Inland floodingSheridan County
30,921 people
Inland floodingPark County
29,572 people
Inland floodingTeton County
23,250 people
AvalancheUinta County
20,412 people
Inland floodingLincoln County
19,576 people
AvalancheCarbon County
14,494 people
Inland floodingCities in Wyoming
All 4 cities ›All 23 counties
| Name | People | Overall risk | Top hazard | Declarations | Homes insured |
|---|---|---|---|---|---|
| Albany County | 37,019 | Inland flooding | 8 | 0.4% | |
| Big Horn County | 11,503 | Inland flooding | 2 | 0.2% | |
| Campbell County | 47,000 | Cold wave | 3 | 0.1% | |
| Carbon County | 14,494 | Inland flooding | 3 | 0.7% | |
| Converse County | 13,728 | Inland flooding | 3 | 0.3% | |
| Crook County | 7,143 | Inland flooding | 5 | 0.1% | |
| Fremont County | 39,175 | Inland flooding | 4 | 0.2% | |
| Goshen County | 12,475 | Inland flooding | 3 | 1.4% | |
| Hot Springs County | 4,609 | Inland flooding | 2 | 0.2% | |
| Johnson County | 8,436 | Inland flooding | 5 | 0.3% | |
| Laramie County | 100,483 | Inland flooding | 3 | 0.5% | |
| Lincoln County | 19,576 | Avalanche | 3 | 0.3% | |
| Natrona County | 79,870 | Inland flooding | 6 | 0.5% | |
| Niobrara County | 2,432 | Inland flooding | 3 | 0.1% | |
| Park County | 29,572 | Inland flooding | 2 | 0.2% | |
| Platte County | 8,567 | Inland flooding | 6 | 0.1% | |
| Sheridan County | 30,921 | Inland flooding | 5 | 0.3% | |
| Sublette County | 8,723 | Inland flooding | 2 | 0.1% | |
| Sweetwater County | 42,238 | Inland flooding | 2 | 0.3% | |
| Teton County | 23,250 | Avalanche | 3 | 3% | |
| Uinta County | 20,412 | Inland flooding | 3 | 0.7% | |
| Washakie County | 7,662 | Inland flooding | 3 | 0.1% | |
| Weston County | 6,822 | Inland flooding | 5 | 0.1% |
Linked names have a full page. Overall risk from the FEMA National Risk Index (December 2025); declarations are federal disaster and emergency declarations for natural events since 1953 (OpenFEMA); homes insured is the share with NFIP flood policies.