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7

中等3

偏高0

高0

Dominant hazards

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

冰风暴 — 6 counties
冬季恶劣天气 — 4 counties
闪电 — 3 counties
雪崩 — 1 county

Highest-risk counties

County	FEMA composite	Score
Hillsborough County	相对中等	90
Rockingham County	相对中等	86
Grafton County	相对中等	82
Merrimack County	相对较低	78
Coos County	相对较低	73
Carroll County	相对较低	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.

Check a county scorecard →Build a prep checklist →← All states

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