COUNTY FATALITY DATA
Merrimack County, New Hampshire
Road fatality data for Merrimack County (NH). Data period: 2016-2023.
- 137
- Total Fatalities (2016-2023)
- 20
- Latest Year Deaths
- High count
- 12.7
- Per 100k Residents
- Below average
- Increasing
- Trend
Rising fatality trend
Merrimack County's FARS series is labeled Increasing with 20 deaths in the latest year.
Merrimack County on a rising FARS trend
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Merrimack County ranks #1,487 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #5 of 10 rated counties in NH. Merrimack County's fatality rate of 12.7 per 100,000 residents places it close to the national middle by that per-capita measure.
- #1,487 of 2,328
- among rated U.S. counties by rate
- #510 of 3,137
- larger-book third
- #5 of 10
- in NH by rate
- Increasing
- fatality trend
NHTSA county milepost
Milepost MERRIMACK-13 · Merrimack 12.7/100k · #1,487 of 2,328
Merrimack County · 12.7/100k · increasing
- BAND 12.7/100k
- VOL #1,487 of 2,328
- AVG 137 book
- YOY Increasing
- RATE 128 crash
- RANK +17.1% vs NH
Stamps derive from this county's NHTSA FARS row (per-100k or book, corpus rank, trend, nationwide peer NAME, vs-state gap), not a trip-risk forecast. PlainRoadSafety is informational only. See our disclaimer. Verify with NHTSA FARS → · Read with methodology → · Understanding road fatality data → · New Hampshire state profile →
How does Merrimack County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Merrimack County is About the same as the comparison
2023 road deaths from the NHTSA Fatality Analysis Reporting System over population from the U.S. Census Bureau Population Estimates Program (Vintage 2023). Rates shown for counties with 10,000+ residents and a 2023 FARS record.
Among the 10 rated counties in New Hampshire, Merrimack County ranks 5 for per-capita risk, above the state's own per-capita average of 10.8 per 100,000 -- nationally, this rate places it close to the national middle by that per-capita measure. The gap between Merrimack County's rate and the state average is 1.8 per 100,000. Its closest per-capita peer statewide is Belknap County, at 13.8 per 100,000 (a difference of 1.1). Its peer counties, highest to lowest per 100,000 residents: Carroll County (17.2), Cheshire County (16.7), Grafton County (15.0), Belknap County (13.8), Coos County (9.6), Rockingham County (9.0), Strafford County (6.8), Hillsborough County (5.4), Sullivan County (2.3).
Merrimack County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
13 Lower than most a lower per-capita rate than 64% of 2,328 rated counties
rated U.S. counties, bucketed by value
Each bar is a band; taller bars hold more rated counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source NHTSA FARS over U.S. Census Bureau population estimates · 2026-09-03
More road safety data related to Merrimack County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Merrimack County vs other counties by ratePer-100k fatality comparison
- New Hampshire statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for NH
- State fatality changesYear-over-year state trends
- Browse all U.S. countiesAlphabetical county index
- All state profiles51 state dashboards
- State vs U.S. safety comparisonRoute-level lookup tool
- National statistics downloadFARS CSV + findings
- How to read FARS fatality dataMethodology primer
- Per-mile vs per-capita road riskRate denominator explained
- Counties starting with MLetter index including NH counties
Frequently Asked Questions
How many traffic fatalities occurred in Merrimack County, New Hampshire?
Merrimack County recorded 137 total traffic fatalities across 128 reported crashes over the data period (2016-2023). The most recent year saw 20 fatalities. The county averages approximately 15.2 fatalities per year.
What is the leading cause of road fatalities in Merrimack County?
Despite a comparatively active crash history (128 recorded crashes), individual cause-code breakdowns are not published for Merrimack County in the current FARS release. Statewide data for New Hampshire may provide additional context.
Is the trend of road fatalities in Merrimack County increasing or decreasing?
The trend in Merrimack County is increasing. This indicates that traffic fatalities have risen over the data period, warranting attention to road safety initiatives.
What is the fatality rate per capita in Merrimack County?
Merrimack County has a fatality rate of 12.7 per 100,000 residents, which places it close to the national middle by that per-capita measure among the 3,137 U.S. counties in this dataset.
Where does Merrimack County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Merrimack County ranks #1,487 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #5 of 10 rated counties in NH, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Merrimack County compare to the rest of New Hampshire?
Merrimack County's per-capita rate of 12.7 per 100,000 residents is above the New Hampshire county average of 10.8. Visit the New Hampshire state page for the full county-by-county breakdown.
Where does the road fatality data for Merrimack County come from?
All road fatality data comes from the NHTSA Fatality Analysis Reporting System (FARS), a census of fatal motor vehicle crashes on public roads in the United States. FARS data covers the period 2016-2023 and includes all crashes resulting in at least one fatality within 30 days.