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

低い7

中程度3

やや高い0

高い0

Dominant hazards

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

アイスストーム — 6 counties
冬の悪天候 — 4 counties
落雷 — 3 counties
雪崩 — 1 county

Highest-risk counties

County	FEMA composite	Score
Hillsborough County	比較的中程度	90
Rockingham County	比較的中程度	86
Grafton County	比較的中程度	82
Merrimack County	比較的低い	78
Coos County	比較的低い	73
Carroll County	比較的低い	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