| # | County | Risk Index score |
|---|---|---|
| 1 | Harrison County | 11.4 |
| 2 | Vinton County | 11.8 |
| 3 | Noble County | 13.5 |
| 4 | Wyandot County | 17.4 |
| 5 | Morgan County | 18.2 |
| 6 | Carroll County | 19.9 |
| 7 | Van Wert County | 20.1 |
| 8 | Paulding County | 21.2 |
| 9 | Hardin County | 24.4 |
| 10 | Morrow County | 24.4 |
| 11 | Madison County | 24.9 |
| 12 | Fayette County | 25.9 |
| 13 | Perry County | 26.0 |
| 14 | Champaign County | 26.7 |
| 15 | Monroe County | 27.3 |
| 16 | Mercer County | 31.6 |
| 17 | Union County | 32.7 |
| 18 | Putnam County | 32.9 |
| 19 | Fulton County | 33.6 |
| 20 | Henry County | 33.8 |
| 21 | Clinton County | 34.0 |
| 22 | Crawford County | 35.2 |
| 23 | Jackson County | 35.8 |
| 24 | Guernsey County | 37.5 |
| 25 | Auglaize County | 41.8 |
Source: FEMA National Risk Index (December 2025). All counties with data are ranked. Estimates carry margins of error.
Citing this page: GIS Map, “Counties with the Lowest Natural Hazard Risk in Ohio”, https://gismap.land/rankings/ohio/lowest-risk-counties. Figures from FEMA National Risk Index (December 2025).
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