Maine earthquake risk
York County has the highest earthquake risk in Maine, scoring 83.8 out of 100 — rated "Relatively Low" by FEMA's National Risk Index.
| # | County | NRI score | Rating |
|---|---|---|---|
| 1 | York County | 83.8 | Relatively Low |
| 2 | Cumberland County | 81.1 | Relatively Low |
| 3 | Penobscot County | 79.1 | Relatively Low |
| 4 | Aroostook County | 77.7 | Relatively Low |
| 5 | Kennebec County | 76 | Relatively Low |
| 6 | Androscoggin County | 74.9 | Relatively Low |
| 7 | Oxford County | 60.3 | Relatively Low |
| 8 | Somerset County | 59.4 | Very Low |
| 9 | Hancock County | 51.2 | Very Low |
| 10 | Sagadahoc County | 47.9 | Very Low |
| 11 | Lincoln County | 47.1 | Very Low |
| 12 | Washington County | 46.7 | Very Low |
| 13 | Knox County | 45.9 | Very Low |
| 14 | Franklin County | 45.8 | Very Low |
| 15 | Waldo County | 42.7 | Very Low |
| 16 | Piscataquis County | 40.6 | Very Low |
Source: FEMA National Risk Index v1.20.0, December 2025. Scores are 0–100 percentile rankings among all US counties. See the methodology page for definitions. Download the full CSV for all counties.
Earthquake risk nationally:
Other hazard risks in Maine:
Frequently asked questions
What is the highest earthquake risk county in Maine?
York County, ME has the highest earthquake risk in Maine, with a FEMA National Risk Index score of 83.8 out of 100 (rated "Relatively Low").
What causes earthquake risk in Maine?
Earthquake risk reflects expected annual losses from ground shaking. High scores concentrate in California, the Pacific Northwest, Alaska, and the New Madrid Seismic Zone (spanning Missouri, Arkansas, Tennessee, and neighboring states). NOAA's Storm Events Database does not track earthquakes, so recorded event counts are not shown.