COUNTY FATALITY DATA
Ada County: lower-rate fatality band
Ada County (ID) is in the lower per-capita third: 5.9/100k (#2,144 of 2,328). Data period: 2016-2023.
- 207
- Total Fatalities (2016-2023)
- 31
- Latest Year Deaths
- Very high count
- 5.9
- Per 100k Residents
- Well below average
- Increasing
- Trend
Lower per-capita fatality band
Ada County ranks #2,144 of 2,328 by deaths per 100,000 residents (5.9/100k) - bottom-third rate among rated U.S. counties.
Ada County in the lower-rate third
According to NHTSA FARS, Ada County sits in the lower-rate third at 5.9 per 100k (#2,144 of 2,328), #28 of 30 in ID.
- #2,144 of 2,328
- lower-rate third
- #306 of 3,137
- larger-book third
- #28 of 30
- in ID by rate
- Increasing
- fatality trend
NHTSA FARS milepost
Milepost ADA-1 · Ada 5.9/100k · #2,144 of 2,328
Ada County · 5.9/100k · increasing
- BAND 5.9/100k
- VOL #2,144 of 2,328
- AVG 207 book
- YOY Increasing
- RATE near Anoka
- RANK -72.2% 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 →
Ada County rate neighbourhood
Deaths per 100,000 residents vs nearest nationwide rate peers (pop ≥250k).
- Ada
Ada County
6 per 100k
- Anoka
Anoka County
6 per 100k
- Forsyth
Forsyth County
6 per 100k
- Honolulu
Honolulu County
6 per 100k
- Chester
Chester County
6 per 100k
What this shows Ada County sits among nearest nationwide per-capita peers.
How does Ada County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Ada County is 72% safer 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, Ada County ranks 15 for per-capita risk, below the state's own per-capita average of 21.2 per 100,000 -- nationally, this rate puts it among the safest one in ten U.S. counties by that per-capita measure. The gap between Ada County's rate and the state average is 15.3 per 100,000. Its closest per-capita peer statewide is Blaine County, at 20.0 per 100,000 (a difference of 14.1). 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), Cassia County (31.1), Benewah County (28.9, limited data), Fremont County (28.2), Washington County (26.3, limited data), Gooding County (24.9), Valley County (23.7, limited data), Jefferson County (23.4), Minidoka County (22.2), Blaine County (20.0).
Ada County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
6 Among the safer counties a lower per-capita rate than 92% 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
Counties with similar FARS profiles
Two cross-state peer sets for Ada County. Same-state rate comparisons stay in the chart above; these neighborhoods are nearest other-state counties with population at least 250,000.
Similar per-capita fatality rate
Nearest counties by deaths per 100,000 residents (5.9 here), outside Idaho.
Similar fatality volume
Nearest counties by recorded FARS deaths (207 here), excluding the rate-peer set.
More road safety data related to Ada County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Ada 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 ALetter index including ID counties
- ANOKA County, MN fatalitiesSimilar nationwide FARS profile
- FORSYTH County, GA fatalitiesSimilar nationwide FARS profile
- HONOLULU County, HI fatalitiesSimilar nationwide FARS profile
- CHESTER County, PA fatalitiesSimilar nationwide FARS profile
Frequently Asked Questions
How many traffic fatalities occurred in Ada County, Idaho?
Ada County recorded 207 total traffic fatalities across 189 reported crashes over the data period (2016-2023). The most recent year saw 31 fatalities. The county averages approximately 23.0 fatalities per year.
What is the leading cause of road fatalities in Ada County?
Despite a comparatively active crash history (189 recorded crashes), individual cause-code breakdowns are not published for Ada County in the current FARS release. Statewide data for Idaho may provide additional context.
Is the trend of road fatalities in Ada County increasing or decreasing?
The trend in Ada 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 Ada County?
Ada County has a fatality rate of 5.9 per 100,000 residents, which puts it among the safest one in ten U.S. counties by that per-capita measure among the 3,137 U.S. counties in this dataset.
Where does Ada County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Ada County ranks #2,144 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #28 of 30 rated counties in ID, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Ada County compare to the rest of Idaho?
Ada County's per-capita rate of 5.9 per 100,000 residents is below 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 Ada 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.