Fatal crashes in Hillsborough County, New Hampshire
In 2024, 32 people died in 29 fatal crashes in Hillsborough County, New Hampshire, 39.1% more than in 2023. From 2015 to 2024 the county recorded 246 fatal crashes and 262 deaths, the most of any county in New Hampshire.
7.4 deaths per 100,000 residents, against 9.4 across New Hampshire in 2024; 6.2 against 9 a year over 2015 to 2024. Population 430,462, Census Bureau estimate. All fatal crashes in New Hampshire.
Deaths in Hillsborough County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 29 | 32 |
| 2023 | 22 | 23 |
| 2022 | 29 | 30 |
| 2021 | 29 | 31 |
| 2020 | 19 | 21 |
| 2019 | 27 | 27 |
| 2018 | 25 | 27 |
| 2017 | 20 | 20 |
| 2016 | 26 | 27 |
| 2015 | 20 | 24 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in Hillsborough County
State Highway 101 had the most fatal crashes of any numbered road in Hillsborough County from 2015 to 2024: 16, with 17 deaths. The 10 roads listed held 35% of all fatal crashes in Hillsborough County from 2015 to 2024; 2 are interstates, 2 US routes, 6 state highways. 52% of the county's fatal crashes were on an interstate, US or state route; the other 48% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | State Highway 101 | 16 | 17 | 5 | no page |
| 2 | I-293 | 14 | 14 | 5 | no page |
| 3 | US 3 | 9 | 11 | 5 | |
| 4 | I-93 | 8 | 8 | 2 | |
| 5 | State Highway 111 | 8 | 8 | 4 | no page |
| 6 | State Highway 28 | 8 | 8 | 4 | no page |
| 7 | State Highway 31 | 6 | 7 | 4 | no page |
| 8 | State Highway 101A | 6 | 6 | 4 | no page |
| 9 | US 202 | 6 | 6 | 3 | no page |
| 10 | State Highway 3A | 5 | 5 | 1 | no page |
Manchester had 28% of the county's fatal crashes from 2015 to 2024, 68 of 246.
Cities NHTSA filed, with their fatal crashes from 2015 to 2024: Manchester 68, Nashua 36, Bedford 20, Merrimack 15, Hudson 13, Pelham 9, Peterborough 9, Weare 6. The city is not filed for crashes outside a city.
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen in Hillsborough County
The heaviest slot is Tuesday, 4 to 8 pm, with 13 fatal crashes from 2015 to 2024. The worst hour is 5 pm to 6 pm; the worst month is July.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 2.4 percent, 6 fatal crashes | 1.6 percent, 4 fatal crashes | 1.6 percent, 4 fatal crashes | 3.3 percent, 8 fatal crashes | 2.8 percent, 7 fatal crashes | 3.7 percent, 9 fatal crashes |
| Mon | 2.4 percent, 6 fatal crashes | 0.0 percent, 0 fatal crashes | 1.6 percent, 4 fatal crashes | 2.0 percent, 5 fatal crashes | 4.1 percent, 10 fatal crashes | 2.0 percent, 5 fatal crashes |
| Tue | 1.2 percent, 3 fatal crashes | 0.4 percent, 1 fatal crash | 2.0 percent, 5 fatal crashes | 1.6 percent, 4 fatal crashes | 5.3 percent, 13 fatal crashes | 0.8 percent, 2 fatal crashes |
| Wed | 0.4 percent, 1 fatal crash | 2.0 percent, 5 fatal crashes | 1.6 percent, 4 fatal crashes | 5.3 percent, 13 fatal crashes | 4.9 percent, 12 fatal crashes | 2.0 percent, 5 fatal crashes |
| Thu | 0.8 percent, 2 fatal crashes | 1.2 percent, 3 fatal crashes | 2.0 percent, 5 fatal crashes | 4.9 percent, 12 fatal crashes | 2.4 percent, 6 fatal crashes | 3.3 percent, 8 fatal crashes |
| Fri | 3.7 percent, 9 fatal crashes | 0.8 percent, 2 fatal crashes | 0.8 percent, 2 fatal crashes | 1.2 percent, 3 fatal crashes | 4.1 percent, 10 fatal crashes | 4.5 percent, 11 fatal crashes |
| Sat | 2.0 percent, 5 fatal crashes | 0.8 percent, 2 fatal crashes | 0.8 percent, 2 fatal crashes | 4.9 percent, 12 fatal crashes | 4.5 percent, 11 fatal crashes | 2.0 percent, 5 fatal crashes |
By hour
By month
- Jan8.1%
- Feb4.1%
- Mar6.5%
- Apr8.9%
- May6.5%
- Jun6.9%
- Jul12.2%
- Aug8.5%
- Sep9.8%
- Oct10.6%
- Nov10.2%
- Dec7.7%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in Hillsborough County first hit
The first harmful event was a fixed object such as a tree, pole or barrier in 40%; a collision with another vehicle in 36%, a pedestrian in 11%, a rollover in 6.1%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Fixed object (tree, pole, barrier, ditch) | 98 | 40% |
| Collision with another vehicle | 88 | 36% |
| Pedestrian | 27 | 11% |
| Rollover | 15 | 6.1% |
| Other | 8 | 3.3% |
| Cyclist | 7 | 2.8% |
| Parked vehicle | 3 | 1.2% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes in Hillsborough County compare with New Hampshire
The largest difference from New Hampshire: from 2015 to 2024, 24% of fatal crashes in Hillsborough County were on rural roads, against 53% across New Hampshire. Also above the New Hampshire share: intersections. Below it: unlit roads at night. Shares of fatal crashes from 2015 to 2024, against the share across all of New Hampshire. A share is only given over 20 crashes; above or below means more than chance would give on 246 crashes.
| Hillsborough | New Hampshire | ||
|---|---|---|---|
| On rural roads | 24% | 53% | below the New Hampshire share |
| At or near an intersection | 26% | 18% | above the New Hampshire share |
| In the dark, road unlit | 20% | 25% | below the New Hampshire share |
| A drinking driver | 35% | 33% | about the same as the New Hampshire share |
| Speeding | 41% | 40% | about the same as the New Hampshire share |
| A distracted driver (as recorded) | 6.1% | 6.7% | about the same as the New Hampshire share |
| Occupants killed unbelted | 66% | 69% | about the same as the New Hampshire share |
| Hit-and-run | 0.8% | 1.8% | about the same as the New Hampshire share |
| A motorcycle involved | 24% | 23% | about the same as the New Hampshire share |
| Pedestrians among the dead | 11% | 9.7% | about the same as the New Hampshire share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in Hillsborough County, New Hampshire
- How many people died in car accidents in Hillsborough County in 2024?
- 32 people died in 29 fatal crashes in Hillsborough County, New Hampshire, in 2024, 39.1% more than in 2023. That is 7.4 deaths per 100,000 residents, against 9.4 across New Hampshire. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in Hillsborough County?
- State Highway 101 had the most fatal crashes of any numbered road in Hillsborough County from 2015 to 2024: 16, with 17 deaths.
- When do fatal crashes in Hillsborough County happen most often?
- The heaviest slot from 2015 to 2024 was Tuesday, 4 to 8 pm, with 13 fatal crashes.
- How many fatal crashes in Hillsborough County involved a drinking driver?
- 87 of 246 fatal crashes in Hillsborough County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 35%, against 33% across New Hampshire.
Other counties in New Hampshire with a page
- Rockingham County
- Merrimack County
- Strafford County
- Grafton County
- Belknap County
- Carroll County
- Cheshire County
All fatal crashes in New Hampshire, with every county ranked.
Where the Hillsborough County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Hillsborough County (county code 11). A fatal crash is one in which someone died within 30 days. The rate per 100,000 uses the Census Bureau's population estimate for the county; it is the only figure here not counted from FARS. Totals from state highway departments and news reports can differ: they count from their own crash reports, often before every death within 30 days is known, while NHTSA's file is checked against death certificates and revised once a year. The full method.
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/new-hampshire/hillsborough-county/, from NHTSA FARS (2024 Annual Report File).”