New Hampshire flood insurance and flood history
From FEMA's flood insurance and disaster data · Updated 2026-10-08
FEMA's National Flood Insurance Program (NFIP) data lists 4,423 flood insurance claims in New Hampshire since 1978. The NFIP paid $67.1 million on them (building, contents and Increased Cost of Compliance payments, in the dollars of the year paid).
The year with the most claims was 2006, with 594.
In the last ten years (2017–2026) there were 688 claims, and the average paid claim was $35,372.
29% of the claims with a recorded flood zone came from buildings outside FEMA's high-risk zones (rated zones B, C and X).
About 1.1% of homes in New Hampshire had an NFIP flood policy in FEMA's latest count (4,490 of 414,294 residential buildings). In the high-risk flood zones (Special Flood Hazard Areas), it was 26% (3,006 of 11,554).
Since 2000, FEMA has made 24 flood-related disaster declarations covering parts of New Hampshire. The most recent was DR-4947-NH (Severe Storm and Flooding), declared October 7, 2026.
Flood insurance claims in New Hampshire by year
Show as a table
| Year | Claims | Paid |
|---|---|---|
| 2026 | 1 | $0 |
| 2025 | 2 | $0 |
| 2024 | 258 | $10.4 million |
| 2023 | 113 | $2.0 million |
| 2022 | 95 | $1.7 million |
| 2021 | 20 | $929,118 |
| 2020 | 6 | $0 |
| 2019 | 16 | $34,158 |
| 2018 | 115 | $2.5 million |
| 2017 | 62 | $1.1 million |
| 2016 | 7 | $76,178 |
| 2015 | 15 | $58,143 |
| 2014 | 35 | $219,757 |
| 2013 | 40 | $369,324 |
| 2012 | 48 | $1.8 million |
| 2011 | 172 | $3.5 million |
| 2010 | 179 | $2.3 million |
| 2009 | 12 | $40,732 |
| 2008 | 51 | $824,919 |
| 2007 | 489 | $10.8 million |
| 2006 | 594 | $13.8 million |
| 2005 | 180 | $5.2 million |
| 2004 | 46 | $220,004 |
| 2003 | 23 | $164,097 |
| 2002 | 12 | $53,016 |
| 2001 | 37 | $189,463 |
| 2000 | 22 | $116,965 |
| 1999 | 15 | $41,304 |
| 1998 | 120 | $729,572 |
| 1997 | 15 | $144,159 |
| 1996 | 283 | $2.4 million |
| 1995 | 17 | $159,421 |
| 1994 | 14 | $14,382 |
| 1993 | 32 | $17,896 |
| 1992 | 33 | $67,518 |
| 1991 | 259 | $1.8 million |
| 1990 | 20 | $20,975 |
| 1989 | 8 | $1,492 |
| 1988 | 17 | $9,949 |
| 1987 | 268 | $1.2 million |
| 1986 | 47 | $199,537 |
| 1985 | 1 | $0 |
| 1984 | 154 | $371,126 |
| 1983 | 30 | $69,450 |
| 1982 | 20 | $32,218 |
| 1981 | 67 | $143,341 |
| 1980 | 18 | $16,929 |
| 1979 | 118 | $255,843 |
| 1978 | 217 | $933,863 |
Biggest flood events by NFIP payments
The flood events FEMA's claims data names most often for New Hampshire, ranked by what the NFIP paid. FEMA names events in its claims records; claims without an event name aren't included here.
| Event | Year | Claims | Paid |
|---|---|---|---|
| Hurricane Irene | 2011 | 143 | $3.3 million |
| Flooding | 1996 | 204 | $1.9 million |
| The "Halloween" Storm | 1991 | 239 | $1.8 million |
| March 2010 Nor'easter | 2010 | 132 | $1.3 million |
| Flooding | 1987 | 242 | $1.2 million |
| December Nor'easter | 2023 | 59 | $1.1 million |
| Flooding | 1990 | 2 | $250 |
What flood insurance costs in New Hampshire
On June 30, 2026, 7,190 NFIP flood insurance policies were in force in New Hampshire. For the 3,406 single-family homes among them, the typical (median) yearly cost was about $1,360; the average was $1,690.
| Rated flood zone | Policies | Typical yearly cost, single-family home | Average cost | Average building coverage |
|---|---|---|---|---|
| High-risk zones (A and V) | 5,260 | $1,640 | $2,020 | $212,000 |
| Moderate- and low-risk zones (B, C and X) | 1,929 | $1,140 | $1,100 | $227,000 |
Cost here is what FEMA's data lists as the policy cost: the premium plus the reserve fund assessment, federal policy fee and HFIAA surcharge. It covers single-family homes only (not condos, apartments or businesses), with costs rounded to the nearest $10 and shown only where at least 20 homes back the figure. Your own price depends on your building and the coverage you choose; see how flood insurance is priced. Private flood insurance isn't included.
Policies and average cost by exact flood zone
Flood history by county
Every New Hampshire county in FEMA's data, sorted by number of NFIP claims since 1978. "Insured" is the share of homes with an NFIP policy; "typical NFIP cost" is the median yearly cost for single-family homes.
| County | Claims | Paid | Insured | Typical NFIP cost | Flood declarations |
|---|---|---|---|---|---|
| Rockingham County | 2,165 | $30.9 million | 2.2% | $1,390 | 8 |
| Hillsborough County | 629 | $10.4 million | 0.7% | $1,210 | 5 |
| Grafton County | 363 | $4.7 million | 1.1% | $1,560 | 15 |
| Merrimack County | 299 | $6.3 million | 0.8% | $1,410 | 6 |
| Carroll County | 290 | $2.8 million | 0.9% | $1,340 | 10 |
| Cheshire County | 247 | $6.7 million | 0.9% | $1,360 | 8 |
| Strafford County | 137 | $2.3 million | 0.6% | $1,140 | 3 |
| Belknap County | 108 | $924,151 | 0.6% | $1,310 | 9 |
| Coos County | 95 | $669,305 | 0.6% | $1,660 | 9 |
| Sullivan County | 62 | $1.3 million | 0.6% | $1,490 | 8 |
Flood-related FEMA disaster declarations in New Hampshire
Declarations since 2000 that FEMA lists as involving flooding. "Help for individuals" means FEMA's Individual Assistance was approved for at least part of the area.
| Declaration | Declared | Event | Help for individuals |
|---|---|---|---|
| DR-4947-NH | Oct 7, 2026 | Severe Storm and Flooding | No |
| DR-4812-NH | Aug 20, 2024 | Severe Storm and Flooding | No |
| DR-4799-NH | Jul 10, 2024 | Severe Winter Storm and Flooding | No |
| DR-4771-NH | Apr 19, 2024 | Severe Storms and Flooding | No |
| DR-4761-NH | Feb 27, 2024 | Severe Storm and Flooding | No |
| DR-4740-NH | Sep 14, 2023 | Severe Storms and Flooding | No |
| DR-4693-NH | Mar 15, 2023 | Severe Storm and Flooding | No |
| DR-4624-NH | Oct 4, 2021 | Severe Storm and Flooding | No |
| DR-4622-NH | Sep 30, 2021 | Severe Storm and Flooding | No |
| DR-4457-NH | Aug 15, 2019 | Severe Storm and Flooding | No |
| DR-4370-NH | Jun 8, 2018 | Severe Storm and Flooding | No |
| DR-4355-NH | Jan 2, 2018 | Severe Storm and Flooding | No |
| DR-4329-NH | Aug 9, 2017 | Severe Storms and Flooding | No |
| DR-4139-NH | Aug 2, 2013 | Severe Storms, Tornadoes, and Flooding | No |
| DR-4065-NH | Jun 15, 2012 | Severe Storm and Flooding | No |
| DR-4006-NH | Jul 22, 2011 | Severe Storms and Flooding | No |
| DR-1913-NH | May 12, 2010 | Severe Storms and Flooding | No |
| DR-1799-NH | Oct 3, 2008 | Severe Storms and Flooding | No |
| DR-1787-NH | Sep 5, 2008 | Severe Storms and Flooding | No |
| DR-1782-NH | Aug 11, 2008 | Severe Storms, Tornado, and Flooding | No |
| DR-1695-NH | Apr 27, 2007 | Severe Storms and Flooding | Yes |
| DR-1643-NH | May 25, 2006 | Severe Storms and Flooding | Yes |
| DR-1610-NH | Oct 26, 2005 | Severe Storms and Flooding | Yes |
| DR-1489-NH | Sep 12, 2003 | Severe Storms and Flooding | No |
What to do with this
A county's history doesn't tell you your own building's risk. To see your property's flood zone, use FEMA's flood map lookup. To weigh coverage, start with do I need flood insurance? and what flood insurance costs.
Where these numbers come from
All figures on this page are calculated from FEMA's public OpenFEMA datasets:
- NFIP Redacted Claims (v3) (FEMA (OpenFEMA)): NFIP claims since 1978, downloaded 2026-10-08. Dollar amounts are what the NFIP paid, not adjusted for inflation. Claims filed under private flood insurance aren't included.
- NFIP Residential Penetration Rates (v1) (FEMA (OpenFEMA)): NFIP residential policy contracts in force (as of August 3, 2026) divided by FEMA's count of residential buildings from the National Structure Inventory. FEMA notes that inventory is incomplete in some counties, which can inflate the rate. Private flood policies aren't counted.
- NFIP Redacted Policies (v3) (FEMA (OpenFEMA)): NFIP policies in force on June 30, 2026 (a policy counts if its term covers that date and it wasn't cancelled), downloaded 2026-10-08. Policy counts are FEMA's insured units, so a condominium association policy counts each unit. Costs are FEMA's "policy cost" (premium plus reserve fund assessment, federal policy fee and HFIAA surcharge) for single-family homes only. Policies FEMA's data doesn't place in a county count toward the state only.
- Disaster Declarations Summaries (v2) (FEMA (OpenFEMA)): disaster declarations, downloaded 2026-10-08. We count a declaration as flood-related when FEMA lists flooding (or a dam or levee break) as its incident type or a designated incident type, or the declaration's title mentions flooding.
FEMA's redacted claims data doesn't identify properties, and FEMA notes that some records lack a county or flood zone. See how we use the data.