STATE RISK ROLL-UP

New Hampshire

Across 10 counties, FEMA rates 0 elevated or higher for overall natural-hazard risk. Here's what drives it — and where it concentrates.

How the counties rate

Bajo7

Moderado3

Elevado0

Alto0

Dominant hazards

The hazards most often rated elevated or higher across New Hampshire's counties:

Tormenta de hielo — 6 counties
Clima invernal — 4 counties
Rayo — 3 counties
Alud — 1 county

Highest-risk counties

County	FEMA composite	Score
Hillsborough County	Relativamente moderado	90
Rockingham County	Relativamente moderado	86
Grafton County	Relativamente moderado	82
Merrimack County	Relativamente bajo	78
Coos County	Relativamente bajo	73
Carroll County	Relativamente bajo	71

State figures are a roll-up of FEMA National Risk Index county data (counts and rankings), not an official FEMA state rating. Risk is an estimate from a public model, not a guarantee — verify your specific insurance needs with a licensed professional. See the methodology.

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FEMA National Risk Index · as of 2026-07-10