COUNTY FATALITY DATA
Cassia County, Idaho
Road fatality data for Cassia County (ID). Data period: 2016-2023.
- 52
- Total Fatalities (2016-2023)
- 8
- Latest Year Deaths
- Near average count
- 31.1
- Per 100k Residents
- Well above average
- Increasing
- Trend
Rising fatality trend
Cassia County's FARS series is labeled Increasing with 8 deaths in the latest year.
Cassia County on a rising FARS trend
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Cassia County ranks #359 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #6 of 30 rated counties in ID. Cassia County's fatality rate of 31.1 per 100,000 residents leaves it more dangerous than most U.S. counties by that per-capita measure.
- #359 of 2,328
- higher-rate third
- #1,347 of 3,137
- by total FARS fatalities
- #6 of 30
- in ID by rate
- Increasing
- fatality trend
Highway fatality milepost
Milepost CASSIA-31 · Cassia 31.1/100k · #359 of 2,328
Cassia County · 31.1/100k · increasing
- RANK 31.1/100k
- BOOK #359 of 2,328
- TREND 52 book
- CAUSE Increasing
- PHOTO 45 crash
- VS-ST +46.8% vs ID
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 → · Idaho state profile →
How does Cassia County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Cassia County is 47% deadlier than 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 Idaho, Cassia County ranks 6 for per-capita risk, above the state's own per-capita average of 21.2 per 100,000 -- nationally, this rate leaves it more dangerous than most U.S. counties by that per-capita measure. The gap between Cassia County's rate and the state average is 9.9 per 100,000. Its closest per-capita peer statewide is Payette County, at 33.0 per 100,000 (a difference of 1.9). Its peer counties, highest to lowest per 100,000 residents: Jerome County (70.6), Idaho County (44.7), Teton County (39.8), Elmore County (37.0), Payette County (33.0), Benewah County (28.9), Fremont County (28.2), Washington County (26.3), Gooding County (24.9), Valley County (23.7), Jefferson County (23.4), Minidoka County (22.2), Blaine County (20.0), Gem County (19.0).
Cassia County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
31 Higher than most a lower per-capita rate than 15% 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 Cassia County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Cassia County vs other counties by ratePer-100k fatality comparison
- Idaho statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for ID
- 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 CLetter index including ID counties
Frequently Asked Questions
How many traffic fatalities occurred in Cassia County, Idaho?
Cassia County recorded 52 total traffic fatalities across 45 reported crashes over the data period (2016-2023). The most recent year saw 8 fatalities. The county averages approximately 5.8 fatalities per year.
What is the leading cause of road fatalities in Cassia County?
Cause-code breakdowns are not individually published for Cassia County in the current FARS release. Statewide data for Idaho may provide additional context.
Is the trend of road fatalities in Cassia County increasing or decreasing?
The trend in Cassia 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 Cassia County?
Cassia County has a fatality rate of 31.1 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 Cassia County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Cassia County ranks #359 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #6 of 30 rated counties in ID, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Cassia County compare to the rest of Idaho?
Cassia County's per-capita rate of 31.1 per 100,000 residents is above the Idaho county average of 21.2. Visit the Idaho state page for the full county-by-county breakdown.
Where does the road fatality data for Cassia 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.