Data / Rankings / Traffic fatality rate / Counties in New Hampshire

Counties in New Hampshire by traffic fatality rate

Carroll County had the highest traffic fatality rate of 10 counties in 2023, at 17.2 per 100,000 people. Sullivan County had the lowest, at 2.3 per 100,000 people. The median was 11 per 100,000 people and the figure for New Hampshire was 9.1 per 100,000 people. Source: NHTSA and BEA.

Keep it in a collection in your library.
Highest17.2Carroll County
Lowest2.3Sullivan County
Median1110 counties
New Hampshire9.1History

Map of counties, 2023

Belknap County: 12.3 per 100,000 peopleCarroll County: 17.2 per 100,000 peopleCheshire County: 16.7 per 100,000 peopleCoos County: 9.6 per 100,000 peopleGrafton County: 14 per 100,000 peopleHillsborough County: 5.4 per 100,000 peopleMerrimack County: 12.7 per 100,000 peopleRockingham County: 8.7 per 100,000 peopleStrafford County: 6.7 per 100,000 peopleSullivan County: 2.3 per 100,000 people
  • Under 6.5
  • 6.5 to 9.3
  • 9.3 to 12
  • 12 to 15
  • 15 and over
per 100,000 people, 2023. Source: Invokely calculation with data from NHTSA, BEA. Boundaries: U.S. Census Bureau cartographic boundary files.

All counties, 2023

Carroll County: 17.2 per 100,000 peopleCarroll County17.2Cheshire County: 16.7 per 100,000 peopleCheshire County16.7Grafton County: 14 per 100,000 peopleGrafton County14Merrimack County: 12.7 per 100,000 peopleMerrimack County12.7Belknap County: 12.3 per 100,000 peopleBelknap County12.3Coos County: 9.6 per 100,000 peopleCoos County9.6Rockingham County: 8.7 per 100,000 peopleRockingham County8.7Strafford County: 6.7 per 100,000 peopleStrafford County6.7Hillsborough County: 5.4 per 100,000 peopleHillsborough County5.4Sullivan County: 2.3 per 100,000 peopleSullivan County2.3Carroll County: 17.2 per 100,000 peopleCarroll County17.2Cheshire County: 16.7 per 100,000 peopleCheshire County16.7Grafton County: 14 per 100,000 peopleGrafton County14Merrimack County: 12.7 per 100,000 peopleMerrimack County12.7Belknap County: 12.3 per 100,000 peopleBelknap County12.3Coos County: 9.6 per 100,000 peopleCoos County9.6Rockingham County: 8.7 per 100,000 peopleRockingham County8.7Strafford County: 6.7 per 100,000 peopleStrafford County6.7Hillsborough County: 5.4 per 100,000 peopleHillsborough County5.4Sullivan County: 2.3 per 100,000 peopleSullivan County2.3
per 100,000 people. Source: Invokely calculation with data from NHTSA, BEA. Retrieved 2026-10-12.

Full ranking

RankCounties2023
per 100,000 people		Change on 2022
1Carroll County17.2-9.7 pts
2Cheshire County16.7+11.6 pts
3Grafton County140 pts
4Merrimack County12.7-0.1 pts
5Belknap County12.3-1.6 pts
6Coos County9.6-6.3 pts
7Rockingham County8.7+2.5 pts
8Strafford County6.7-9.1 pts
9Hillsborough County5.4-1.7 pts
10Sullivan County2.3-20.5 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, 2023) [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, 2023. 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, 2023. 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, 2023 [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_2023,
  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, 2023}},
  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=2023. 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, 2023
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=2023
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=2023.
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?

Carroll County, with 17.2 per 100,000 people in 2023, according to NHTSA and BEA.

Which county has the lowest traffic fatality rate?

Sullivan County, with 2.3 per 100,000 people in 2023.

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