Alaska Natural Disaster Risk by County
FEMA National Risk Index rankings for all 30 counties
Alaska spans 30 counties with an average FEMA National Risk Index score of 35.2 (low risk) and roughly $941M in combined expected annual loss statewide. 1 county is rated High or Very High risk.
Topping the rankings is Anchorage Municipality (score 97.4, high), while Wrangell City and Borough (score 0.1) carries the lowest. Use the table below to compare every county by score, top hazard, and expected annual loss.
County Rankings
| # | County | Risk Score | Risk Rating | Top Hazard | Ann. Loss |
|---|---|---|---|---|---|
| 1 | Anchorage Municipality | High | Earthquake | $367M | |
| 2 | Matanuska-Susitna Borough | Medium | Avalanche | $161M | |
| 3 | Kenai Peninsula Borough | Medium | Avalanche | $121M | |
| 4 | Fairbanks North Star Borough | Medium | Landslide | $101M | |
| 5 | Aleutians West Census Area | Low | Volcanic Activity | $29M | |
| 6 | Kodiak Island Borough | Low | Landslide | $25M | |
| 7 | Yukon-Koyukuk Census Area | Low | Cold Wave | $12M | |
| 8 | Kusilvak Census Area | Low | Cold Wave | $11M | |
| 9 | Southeast Fairbanks Census Area | Low | Wildfire | $12M | |
| 10 | Northwest Arctic Borough | Low | Cold Wave | $10M | |
| 11 | Bethel Census Area | Low | Cold Wave | $8M | |
| 12 | Copper River Census Area | Very Low | Avalanche | $8M | |
| 13 | Dillingham Census Area | Very Low | Cold Wave | $7M | |
| 14 | Nome Census Area | Very Low | Cold Wave | $6M | |
| 15 | Denali Borough | Very Low | Avalanche | $11M | |
| 16 | Sitka City and Borough | Very Low | Landslide | $7M | |
| 17 | Aleutians East Borough | Very Low | Volcanic Activity | $4M | |
| 18 | Chugach Census Area | Very Low | Landslide | $10M | |
| 19 | Petersburg Borough | Very Low | Landslide | $5M | |
| 20 | North Slope Borough | Very Low | Cold Wave | $5M | |
| 21 | Hoonah-Angoon Census Area | Very Low | Landslide | $3M | |
| 22 | Juneau City and Borough | Very Low | Landslide | $6M | |
| 23 | Lake and Peninsula Borough | Very Low | Volcanic Activity | $2M | |
| 24 | Haines Borough | Very Low | Landslide | $3M | |
| 25 | Yakutat City and Borough | Very Low | Landslide | $1M | |
| 26 | Ketchikan Gateway Borough | Very Low | Landslide | $2M | |
| 27 | Bristol Bay Borough | Very Low | Earthquake | $1M | |
| 28 | Prince of Wales-Hyder Census Area | Very Low | Landslide | $839K | |
| 29 | Skagway Municipality | Very Low | Landslide | $675K | |
| 30 | Wrangell City and Borough | Very Low | Landslide | $172K |
All 30 Alaska counties, ranked by FEMA National Risk Index score.
Frequently Asked Questions
Which Alaska county has the highest natural disaster risk?
Anchorage Municipality has the highest FEMA National Risk Index score in Alaska at 97.4 (High), driven largely by earthquake.
What is the average natural disaster risk in Alaska?
Alaska counties average a National Risk Index score of 35.2 across 30 counties, with 1 rated High or Very High risk.
How much are expected annual losses across Alaska?
FEMA estimates roughly $941M in combined expected annual loss from natural hazards across all Alaska counties.