Calvert County Disaster Risk
Calvert County, Maryland
FEMA Risk Rating
Very Low
National Percentile
29th
of 3,144 counties
State Rank
#22
of 24 (1 = highest risk)
Flood Risk
59th
percentile
Hazard Risk Breakdown
Flood
River, coastal, and surface flooding risk
Relatively Low
Higher than 59% of US counties
Wildfire
Wildland and wildland-urban interface fire risk
Relatively Low
Higher than 53% of US counties
Tornado
Tornado and severe thunderstorm risk
Very Low
Higher than 17% of US counties
Earthquake
Seismic activity and ground shaking risk
Relatively Low
Higher than 50% of US counties
Hurricane
Tropical cyclone and hurricane risk
Moderate
Higher than 82% of US counties
Risk Overview
About Natural Disaster Risk in Calvert County, Maryland
Calvert County sits well below national risk averages
Calvert County's composite risk score of 28.91 earns a "Very Low" rating—among the safest counties in the nation for natural disasters. Despite modest exposure to select hazards, the county's overall vulnerability remains minimal compared to national trends.
Maryland's safest county by far
Calvert County's 28.91 score is the lowest in Maryland, less than half the state average of 60.22 and dramatically safer than urban peers Baltimore City (95.01) and Baltimore County (93.99). The county's geographic isolation and rural character minimize compounded hazard exposure.
Calvert outpaces all nearby counties
Calvert County (28.91) is far safer than Anne Arundel (81.87), Caroline (45.71), and Charles County neighbors to the south and west. Its isolated peninsula location and lower development density create a protective buffer against the hazard concentrations affecting more connected regions.
Hurricane and flood risks warrant attention
Calvert County's main hazards are hurricane exposure (81.73) and flood danger (59.40), both notable but manageable compared to statewide peers. Tornado (17.33), earthquake (50.06), and wildfire (52.58) risks remain secondary concerns in this low-risk jurisdiction.
Standard coverage provides solid protection
Calvert County residents should maintain standard homeowners insurance and consider flood coverage if in a mapped flood zone, given the county's low overall risk. Compared to state peers, insurance costs should reflect this favorable risk profile—shop around to ensure competitive rates.
Source: FEMA National Risk Index · Narrative reviewed by Evan Brooks, Data Editor
Preparedness Guide
What to Prepare for in Calvert County
Top Hazards by Exposure
Source: FEMA National Risk Index v1.19.0 · Percentiles are national (3,144 counties)
Risk Advisory: Calvert County
Risk Verdict
Natural disaster exposure in Calvert County is lower than roughly three-quarters of U.S. counties, with a composite score at the 29th percentile. At the 29th percentile nationally, Calvert County's natural hazard profile is comparatively favorable — community resilience is reinforced when individual households maintain a reviewed emergency plan.
Hazard Breakdown
Hurricane risk is Calvert County's dominant natural hazard, ranked at the 82th percentile nationally under FEMA's National Risk Index. Flood ranks second at the 59th percentile nationally. Additional tracked hazards include wildfire (53th percentile), earthquake (50th percentile), tornado (17th percentile).
Preparedness Context
At the 82th percentile nationally for hurricane risk, Calvert County is in a zone where flood insurance matters beyond the primary wind risk: NFIP flood insurance requires a 30-day waiting period before taking effect, making off-season enrollment the correct timing. Flood, the county's second-ranked hazard at the 59th percentile nationally, represents an additional preparedness consideration for Calvert County independent of hurricane season. For Calvert County households, the hurricane preparedness calendar matters: flood insurance has a 30-day waiting period, wind-hardening retrofits take weeks to schedule, and evacuation route scouting is best done before a storm watch is issued.
Regional Context
Calvert County is 31.3 composite risk points below the Maryland state mean, meaning most other Maryland counties face higher natural hazard exposure.
Is your household prepared for Calvert County's hazards?
Review FEMA's county-specific preparedness checklists and emergency planning guides.
Frequently Asked Questions
What is the natural disaster risk in Calvert County, MD?
What types of natural hazards affect Calvert County?
How does Calvert County risk compare to the Maryland average?
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Is Calvert County a safe place to live?
Data Source
Risk data sourced from the FEMA National Risk Index (NRI). Risk scores are relative rankings (0–100) across all US counties — not absolute risk measures. Higher scores indicate higher relative risk compared to other counties.
Disclaimer: This data is informational only. It is not financial, insurance, or legal advice. Always consult a qualified professional before making insurance or real estate decisions.