Counties in New Hampshire by traffic fatality rate

Belknap County had the highest traffic fatality rate of 10 counties in 2018, at 20.6 per 100,000 people. Hillsborough County had the lowest, at 6.5 per 100,000 people. The median was 14.5 per 100,000 people and the figure for New Hampshire was 10.8 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest20.6Belknap County
Median14.510 counties
New Hampshire10.8History

Map of counties, 2018

Belknap County: 20.6 per 100,000 peopleCarroll County: 18.2 per 100,000 peopleCheshire County: 10.5 per 100,000 peopleCoos County: 19 per 100,000 peopleGrafton County: 13.2 per 100,000 peopleHillsborough County: 6.5 per 100,000 peopleMerrimack County: 15.8 per 100,000 peopleRockingham County: 9.3 per 100,000 peopleStrafford County: 8.5 per 100,000 peopleSullivan County: 18.6 per 100,000 people
  • Under 9.2
  • 9.2 to 12
  • 12 to 17
  • 17 to 19
  • 19 and over
per 100,000 people, 2018. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2018

Belknap County: 20.6 per 100,000 peopleBelknap County20.6Coos County: 19 per 100,000 peopleCoos County19Sullivan County: 18.6 per 100,000 peopleSullivan County18.6Carroll County: 18.2 per 100,000 peopleCarroll County18.2Merrimack County: 15.8 per 100,000 peopleMerrimack County15.8Grafton County: 13.2 per 100,000 peopleGrafton County13.2Cheshire County: 10.5 per 100,000 peopleCheshire County10.5Rockingham County: 9.3 per 100,000 peopleRockingham County9.3Strafford County: 8.5 per 100,000 peopleStrafford County8.5Hillsborough County: 6.5 per 100,000 peopleHillsborough County6.5Belknap County: 20.6 per 100,000 peopleBelknap County20.6Coos County: 19 per 100,000 peopleCoos County19Sullivan County: 18.6 per 100,000 peopleSullivan County18.6Carroll County: 18.2 per 100,000 peopleCarroll County18.2Merrimack County: 15.8 per 100,000 peopleMerrimack County15.8Grafton County: 13.2 per 100,000 peopleGrafton County13.2Cheshire County: 10.5 per 100,000 peopleCheshire County10.5Rockingham County: 9.3 per 100,000 peopleRockingham County9.3Strafford County: 8.5 per 100,000 peopleStrafford County8.5Hillsborough County: 6.5 per 100,000 peopleHillsborough County6.5
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2018
per 100,000 people
Change on 2017
1Belknap County20.6+3 pts
2Coos County19-3.2 pts
3Sullivan County18.6+11.6 pts
4Carroll County18.2+5.9 pts
5Merrimack County15.8+7.8 pts
6Grafton County13.2+7.7 pts
7Cheshire County10.5-2.6 pts
8Rockingham County9.3+4.2 pts
9Strafford County8.5-0.8 pts
10Hillsborough County6.5+1.7 pts

Other periods

About this ranking

Traffic fatalities (NHTSA FARS) per 100,000 residents in the same year and place.

Deaths are counted where the crash happened and divided by the resident population, so counties with busy highways and few residents can show very high rates. Differs from the WHO road traffic death rate (road_traffic_death_rate).

Every value in the ranking comes from the same publisher and the same period, so the counties are compared on one definition. Equal values share a rank.

How to cite

Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Retrieved 2026-10-12.

Citation styles

Invokely calculated this figure from the publishers' data, so Invokely is the author and the publishers of the inputs are named.

APA 7

Invokely. (n.d.). NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents (Counties in New Hampshire by traffic fatality rate, 2018) [Data set]. Calculated from data by NHTSA and BEA. Retrieved October 12, 2026, from https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k

MLA 9

NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in New Hampshire by traffic fatality rate, 2018. Calculated from data by NHTSA and BEA. Invokely, https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Accessed 12 Oct. 2026.

Chicago (author-date)

Invokely. n.d. NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Counties in New Hampshire by traffic fatality rate, 2018. Dataset. Calculated from data by NHTSA and BEA. Accessed October 12, 2026. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k.

Harvard

Invokely (no date) NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents, Counties in New Hampshire by traffic fatality rate, 2018 [Dataset]. Calculated from data by NHTSA and BEA. Available at: https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k (Accessed: 12 October 2026).

BibTeX
@misc{invokely_counties_in_new_hampshire_2018,
  author = {{Invokely}},
  title = {{NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in New Hampshire by traffic fatality rate, 2018}},
  howpublished = {Data set},
  url = {https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k},
  urldate = {2026-10-12},
  note = {Calculated from data by NHTSA and BEA. Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/new-hampshire-counties?period=2018. Publisher attribution: Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology\#traffic\_fatality\_rate\_per\_100k. Retrieved 2026-10-12.},
}
RIS
TY  - DATA
AU  - Invokely
TI  - NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents: Counties in New Hampshire by traffic fatality rate, 2018
PB  - Invokely
DB  - Invokely
UR  - https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k
L2  - https://invokely.ai/rankings/traffic-fatality-rate/new-hampshire-counties?period=2018
Y2  - 2026/10/12
N1  - Calculated from data by NHTSA and BEA.
N1  - Accessed via Invokely, https://invokely.ai/rankings/traffic-fatality-rate/new-hampshire-counties?period=2018.
N1  - Publisher attribution: Invokely calculation from NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. https://invokely.ai/docs/methodology#traffic_fatality_rate_per_100k. Retrieved 2026-10-12.
ER  - 
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Questions

Which county has the highest traffic fatality rate?

Belknap County, with 20.6 per 100,000 people in 2018, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Hillsborough County, with 6.5 per 100,000 people in 2018.

Where does this ranking come from?

Every value comes from one source and one period, so the places are comparable: Invokely, NHTSA FARS traffic fatalities divided by BEA mid-year population (SAINC1 and CAINC1), per 100,000 residents. Retrieved 2026-10-12.

Traffic fatality rate: other rankings

Counties in New Hampshire: more rankings