Hillsborough County, New Hampshire: fatal crash statistics

Counties of New Hampshire by year (CSV)Cite this page

FARS records 32 deaths in 29 fatal crashes in Hillsborough County in 2024.

FARS records 262 deaths in 246 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 6.2 deaths for each 100,000 residents in a year.

The rate of New Hampshire in the same years is 8.9.

By deaths from 2015 to 2024, Hillsborough County was number 1 of 10 counties of New Hampshire.

Deaths in Hillsborough County rose by 0.8% between the ten years 2005 to 2014 (260) and the ten years 2015 to 2024 (262).

In the counties of New Hampshire the deaths rose by 0.2% between the same years.

From 2015 to 2024, 23.6% of the fatal crashes in Hillsborough County with a known setting were rural, against 52.9% in New Hampshire.

To qualify as a FARS case, the crash had to involve a motor vehicle traveling on a trafficway customarily open to the public and must have resulted in the death of a motorist or a non-motorist within 30 days of the crash.
The set of first files, known as the Annual Report File (ARF), is released following the crash year. The ARF is replaced about a year later with a final file, which contains additional cases or updates to cases that had become available after the ARF was released.
NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

This page rests on the FARS 2024 annual file. NHTSA released it on 1 Apr 2026. NHTSA can revise the counts in the final file. Release dates

Figure 1.Deaths in Hillsborough County by year, 2015 to 2024

Table 1 has the numbers. Go to the table

Since the last update: no figure of this county has a change on record.

Deaths and fatal crashes by year

Table 1.Hillsborough County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	32	29	10
2023	23	22	8
2022	30	29	9
2021	31	29	13
2020	21	19	6
2019	27	27	12
2018	27	25	9
2017	20	20	4
2016	27	26	6
2015	24	20	10
2015 to 2024	262	246	87

Each year from 1975

Figure 2.Deaths in Hillsborough County by year, 1975 to 2024

Tallest column: 52 (1984)2024: 32

The columns with a stronger shade are the years 2015 to 2024.

Table 2.Hillsborough County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	32	29
2023	23	22
2022	30	29
2021	31	29
2020	21	19
2019	27	27
2018	27	25
2017	20	20
2016	27	26
2015	24	20
2014	27	26
2013	28	24
2012	21	21
2011	19	16
2010	30	26
2009	21	17
2008	24	23
2007	29	28
2006	30	27
2005	31	30
2004	38	35
2003	28	26
2002	33	30
2001	23	23
2000	17	16
1999	31	28
1998	21	16
1997	22	21
1996	29	28
1995	21	19
1994	23	21
1993	18	18
1992	25	22
1991	27	25
1990	34	31
1989	39	32
1988	37	33
1987	37	33
1986	34	34
1985	40	39
1984	52	43
1983	43	39
1982	36	35
1981	29	26
1980	35	34
1979	36	32
1978	33	32
1977	29	29
1976	43	37
1975	30	28

Note: a count of 1 or 2 is written "1 or 2". A death is in FARS when it occurs in 30 days or less after the crash.

Rate for each 100,000 residents

Table 3.Hillsborough County beside New Hampshire and the United States: deaths for each 100,000 residents
Period	Hillsborough County	New Hampshire	United States
2024	7.4	9.4	11.5
2015 to 2024, in a year	6.2	8.9	11.8

Note: the rate divides the deaths in the county by its residents. Persons who do not live in the county are in the deaths, not in the residents.

Population: Census Bureau estimates, vintage 2025. Hillsborough County had 430,442 residents in 2024.

Factors that NHTSA records

Table 4.Hillsborough County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in New Hampshire
A driver recorded as drinkingof 246 fatal crashes	87	246 fatal crashes	35.4%	32.7%
A speeding-related driverof 246 fatal crashes	101	246 fatal crashes	41.1%	39.9%
No restraint usedof 151 occupant deaths with restraint use known	101	151 occupant deathswith restraint use known	66.9%	69.2%
Pedestriansof 262 deaths	28	262 deaths	10.7%	9.7%
Bicyclistsof 262 deaths	7	262 deaths	2.7%	1.7%
Motorcyclistsof 262 deaths	63	262 deaths	24.0%	22.6%
On a rural roadof 246 fatal crashes with the condition reported	58	246 fatal crasheswith the condition reported	23.6%	52.9%
In the darkof 246 fatal crashes with the condition reported	103	246 fatal crasheswith the condition reported	41.9%	37.1%

Note: FARS records a driver as drinking when police reported alcohol involvement or a test of the driver was positive for alcohol. It is not NHTSA's alcohol-impaired measure, which uses a blood alcohol concentration of .08 g/dL or higher. One crash can be in two or more rows. NHTSA's definitions

Note that alcohol data is often missing. For that reason, this data element may under-count the actual number of drinking drivers.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

Weekday, time and road class

Table 5.Hillsborough County: fatal crashes by weekday and time of day, 2015 to 2024
Weekday	Midnight to 6 a.m.	6 a.m. to noon	Noon to 6 p.m.	6 p.m. to midnight	All
Sunday	8	6	12	12	38
Monday	6	4	10	10	30
Tuesday	3	6	10	9	28
Wednesday	3	7	19	11	40
Thursday	3	7	15	11	36
Friday	10	3	10	14	37
Saturday	6	3	17	11	37
All days	39	36	93	78	246

Note: a cell with a stronger shade has a larger count. The table has the fatal crashes with a known hour and weekday.

Table 6.Hillsborough County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in New Hampshire
Interstate	21	8.5%	11.0%
Other freeways and expressways	17	6.9%	2.6%
Other principal arterial	70	28.5%	26.3%
Minor arterial	47	19.1%	21.2%
Major collector	33	13.4%	14.4%
Minor collector	10	4.1%	5.2%
Local	48	19.5%	19.3%
Not reported	0	n/a	n/a

Note: the classes are those of the Federal Highway Administration. The shares are of the crashes with a reported class. Road function classes

Light condition and weather

Table 7.Hillsborough County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	128
Dark, not lighted	48
Dark, lighted	50
Dawn	4
Dusk	11
Dark, lighting unknown	5
Other or unknown	0

Table 8.Hillsborough County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	190
Cloudy	32
Rain	19
Snow, sleet or freezing rain	4
Fog, smog or smoke	1 or 2
Crosswinds or blowing sand/snow	0
Other or not reported	0

Routes in the county

Table 9.Signed routes in Hillsborough County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Hillsborough	In all of New Hampshire
Interstate 93	Interstate	8	86
State Route 9	State highway	4	21
State Route 28	State highway	8	37
State Route 101	State highway	16	39
US Route 3	US highway	9	52

Note: the table has each route with a page that has a fatal crash in the county, in name order. Local streets and county roads have no page. Their crashes are in the county totals. All routes in New Hampshire

Adjacent counties

These lists are for navigation. They are in name order.

Figure 3.Hillsborough County on the county map of New Hampshire

Deaths for each 100,000 residents in a year, 2015 to 2024

Fewer than 105 counties
10 to 14.93 counties
15 to 19.92 counties
20 to 29.90 counties
30 or more0 counties
Hillsborough County: 6.2

The limits of the classes are the same for every state. A county with few residents can show a high rate from few deaths. A class is not a judgement of a county. The full map and the table of counties of New Hampshire

Table 10.Counties that share a boundary line with Hillsborough County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Essex County	Massachusetts	29	332	4.2
Middlesex County	Massachusetts	55	513	3.2
Worcester County	Massachusetts	49	533	6.3
Cheshire County	New Hampshire	11	74	9.6
Merrimack County	New Hampshire	20	173	11.3
Rockingham County	New Hampshire	30	239	7.6
Sullivan County	New Hampshire	1 or 2	40	9.2

Source of the list: Census Bureau county adjacency file, 2026 edition.

Counties of similar population

These counties of New Hampshire have a population nearest to that of Hillsborough County. The list is for navigation and is in name order. The number is the deaths from 2015 to 2024.

Official channels

NHTSA Fatality and Injury Reporting System Tool (FIRST)NHTSA's query tool for FARS counts.
NHTSA FARS EncyclopediaNHTSA's tables of FARS data.
New Hampshire Office of Highway SafetyThe highway safety office of New Hampshire.

These links go to the sites of the agencies. They were checked on 2 Oct 2026.

Cite this page

Fatal Roads. Hillsborough County, New Hampshire: fatal crash statistics. https://fatalroads.com/county/nh/hillsborough/. Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, FARS 2024 annual file. Data to 31 Dec 2024.

The address of this page does not change.

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Source of the figures

Counts: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, national files of 1975 to 2024. The factors use the vehicle and person files from 2015. Residents: Census Bureau, Population Estimates Program, vintage 2025. Map: Census Bureau cartographic boundary file, 2021 edition. Data to 31 Dec 2024. The figures are totals. No page of this site is about one crash or one person.

How the figures are made. Data sources and licences. Corrections.

Questions

How many deaths did FARS record in Hillsborough in the ten years before 2015?

FARS records 260 deaths in Hillsborough County from 2005 to 2014. It records 262 deaths from 2015 to 2024.

What was the rate of Hillsborough in 2024?

The rate of Hillsborough County in 2024 was 7.4 deaths for each 100,000 residents. The rate of New Hampshire was 9.4. The rate of the United States was 11.5.

How many fatal crashes in Hillsborough had a driver recorded as drinking?

FARS records a driver as drinking in 87 of 246 fatal crashes from 2015 to 2024. This count is not NHTSA's alcohol-impaired measure. NHTSA says that alcohol data is often missing, so the count may be too low.

How many fatal crashes did FARS record on signed routes in Hillsborough?

5 signed routes in the county have a page. FARS records 45 fatal crashes on them in the county from 2015 to 2024. The table of routes on this page gives the count for each route.