Data · May 2026 data · 13-month trend
New Hampshire Flood Insurance Costs
New Hampshire's flood insurance cost index stood at $1,070 in May 2026, measured across policies newly written or renewed that month. The state pays more than the country as a whole — 9.0% above the $982 national average. Costs have risen 21.3% year over year. Across 653 transactions in 11 counties, the highest county-level average was $3,757 in Coos County.
What we measure: Average premium among policies newly written or renewed that month (NFIP transactions) — not the official in-force average. OpenFEMA transaction data is published on a lag of roughly two months; the latest period shown reflects that lag.
Key facts — May 2026
- Average premium
- $1,070
- Avg total cost (with fees)
- $1,379
- Change (year over year)
- +21.3%
- vs national average
- +9.0%
- Policies written or renewed
- 653
- Counties reporting
- 11
New Hampshire trend, last 13 months
Average premium among policies newly written or renewed each month. Bars scale to the highest month shown.
| Month | Avg premium | Premium relative to highest month | Avg total cost | Policies |
|---|---|---|---|---|
| May 2025 | $882 | $1,141 | 825 | |
| June 2025 | $1,034 | $1,347 | 819 | |
| July 2025 | $957 | $1,242 | 826 | |
| August 2025 | $1,286 | $1,659 | 556 | |
| September 2025 | $1,241 | $1,590 | 701 | |
| October 2025 | $1,197 | $1,553 | 626 | |
| November 2025 | $1,132 | $1,471 | 706 | |
| December 2025 | $1,259 | $1,628 | 590 | |
| January 2026 | $1,338 | $1,724 | 351 | |
| February 2026 | $1,237 | $1,599 | 501 | |
| March 2026 | $1,423 | $1,822 | 539 | |
| April 2026 | $1,452 | $1,865 | 497 | |
| May 2026 | $1,070 | $1,379 | 653 |
County breakdown — May 2026
Sorted by average premium, highest first. Rows labeled with a FIPS code are reporting areas without a matched county name. Watch the policy count before reading much into small-county averages.
| County | Avg premium | Premium relative to highest county | Avg total cost | Policies |
|---|---|---|---|---|
| Coos County | $3,757 | $4,730 | 5 | |
| FIPS 33000 | $3,543 | $4,478 | 1 | |
| Cheshire County | $1,980 | $2,553 | 31 | |
| Merrimack County | $1,860 | $2,366 | 27 | |
| Carroll County | $1,411 | $1,844 | 21 | |
| Hillsborough County | $1,371 | $1,735 | 65 | |
| Sullivan County | $1,313 | $1,703 | 11 | |
| Belknap County | $1,281 | $1,739 | 16 | |
| Strafford County | $1,241 | $1,589 | 17 | |
| Rockingham County | $867 | $1,123 | 363 | |
| Grafton County | $780 | $999 | 95 |
Use this data
Download New Hampshire CSV (new-hampshire.csv) — free to reuse with attribution. Read the full methodology for formulas, update cadence, and limitations. Source: FEMA OpenFEMA NFIP policy transaction data (FimaNfipPolicies).
"New Hampshire Flood Insurance Costs." Out of the Storm News Flood Insurance Cost Index, May 2026, based on FEMA OpenFEMA NFIP policy transaction data. https://outofthestormnews.com/flood-insurance/costs/new-hampshire
Related guides
Editorial context for reading these numbers — how NFIP coverage and pricing work in practice, and what a flood map does and doesn’t tell you.