COUNTY FATALITY DATA
Jefferson County: higher-rate fatality band
Jefferson County (MT) is in the higher per-capita third: 23.0/100k (#683 of 2,328). Data period: 2016-2023.
- 41
- Total Fatalities (2016-2023)
- 3
- Latest Year Deaths
- Low count
- 23.0
- Per 100k Residents
- Above average
- Stable
- Trend
Higher per-capita fatality band
Jefferson County ranks #683 of 2,328 by deaths per 100,000 residents (23.0/100k) - top-third rate among rated U.S. counties.
Jefferson County in the higher-rate third
According to NHTSA FARS, Jefferson County sits in the higher-rate third at 23.0 per 100k (#683 of 2,328), #8 of 19 in MT.
- #683 of 2,328
- higher-rate third
- #1,637 of 3,137
- by total FARS fatalities
- #8 of 19
- in MT by rate
- Stable
- fatality trend
NHTSA county milepost
Milepost JEFFERSON-43 · Jefferson 23.0/100k · #683 of 2,328
Jefferson County · 23.0/100k · stable
- CAUSE 23.0/100k
- PHOTO #683 of 2,328
- VS-ST 41 book
- CRASH Stable
- FARS 38 crash
- NHTSA -5.7% vs MT
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 → · Montana state profile →
How does Jefferson County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Jefferson 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 15 rated counties in Montana, Jefferson County ranks 8 for per-capita risk, below the state's own per-capita average of 24.4 per 100,000 -- nationally, this rate leaves it more dangerous than most U.S. counties by that per-capita measure. The gap between Jefferson County's rate and the state average is 1.4 per 100,000. Its closest per-capita peer statewide is Lake County, at 24.0 per 100,000 (a difference of 1.0). Its peer counties, highest to lowest per 100,000 residents: Big Horn County (70.6), Carbon County (61.3), Lincoln County (41.1), Park County (33.5), Sanders County (29.2), Roosevelt County (29.1), Lake County (24.0), Glacier County (22.0), Flathead County (20.2), Missoula County (18.9), Yellowstone County (15.8), Ravalli County (14.7), Gallatin County (13.4), Hill County (12.3).
Jefferson County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
23 Around the middle a lower per-capita rate than 29% 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 Jefferson County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Jefferson County vs other counties by ratePer-100k fatality comparison
- Montana statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for MT
- 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 JLetter index including MT counties
Frequently Asked Questions
How many traffic fatalities occurred in Jefferson County, Montana?
Jefferson County recorded 41 total traffic fatalities across 38 reported crashes over the data period (2016-2023). The most recent year saw 3 fatalities. The county averages approximately 4.6 fatalities per year.
What is the leading cause of road fatalities in Jefferson County?
Cause-code breakdowns are not individually published for Jefferson County in the current FARS release. Statewide data for Montana may provide additional context.
Is the trend of road fatalities in Jefferson County increasing or decreasing?
The trend in Jefferson County is stable. Fatality counts have remained relatively consistent over the data period.
What is the fatality rate per capita in Jefferson County?
Jefferson County has a fatality rate of 23.0 per 100,000 residents, which leaves it more dangerous than most U.S. counties by that per-capita measure among the 3,137 U.S. counties in this dataset.
Where does Jefferson County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Jefferson County ranks #683 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #8 of 19 rated counties in MT, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Jefferson County compare to the rest of Montana?
Jefferson County's per-capita rate of 23.0 per 100,000 residents is below the Montana county average of 24.4. Visit the Montana state page for the full county-by-county breakdown.
Where does the road fatality data for Jefferson 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.