COUNTY FATALITY DATA
Mariposa County, California
Road fatality data for Mariposa County (CA). Data period: 2016-2023.
- 26
- Total Fatalities (2016-2023)
- 3
- Latest Year Deaths
- Low count
- 17.7
- Per 100k Residents
- Near average
- Decreasing
- Trend
Falling fatality trend
Mariposa County's FARS series is labeled Decreasing with 3 deaths in the latest year.
Mariposa County on a falling FARS trend
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Mariposa County ranks #1,018 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #20 of 54 rated counties in CA. Mariposa County's fatality rate of 17.7 per 100,000 residents places it close to the national middle by that per-capita measure.
- #1,018 of 2,328
- among rated U.S. counties by rate
- #2,138 of 3,137
- smaller-book third
- #20 of 54
- in CA by rate
- Decreasing
- fatality trend
NHTSA FARS milepost
Milepost MARIPOSA-43 · Mariposa 17.7/100k · #1,018 of 2,328
Mariposa County · 17.7/100k · decreasing
- AVG 17.7/100k
- YOY #1,018 of 2,328
- RATE 26 book
- RANK Decreasing
- BOOK 24 crash
- TREND +4.7% vs CA
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 → · California state profile →
How does Mariposa County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Mariposa 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 California, Mariposa County ranks 15 for per-capita risk, above the state's own per-capita average of 16.9 per 100,000 -- nationally, this rate places it close to the national middle by that per-capita measure. The gap between Mariposa County's rate and the state average is 0.8 per 100,000. Its closest per-capita peer statewide is Colusa County, at 22.7 per 100,000 (a difference of 5.0). Its peer counties, highest to lowest per 100,000 residents: Trinity County (51.1), Glenn County (46.2), Siskiyou County (42.0), Inyo County (37.8), Tuolumne County (35.1), Calaveras County (30.1), Lake County (28.0), Amador County (26.3), Kings County (24.9), Mendocino County (24.7), Lassen County (24.3), Sutter County (23.5), Yuba County (23.3), Colusa County (22.7).
Mariposa County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
18 Around the middle a lower per-capita rate than 43% 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 Mariposa County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Mariposa County vs other counties by ratePer-100k fatality comparison
- California statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for CA
- 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 CA counties
Frequently Asked Questions
How many traffic fatalities occurred in Mariposa County, California?
Mariposa County recorded 26 total traffic fatalities across 24 reported crashes over the data period (2016-2023). The most recent year saw 3 fatalities. The county averages approximately 2.9 fatalities per year.
What is the leading cause of road fatalities in Mariposa County?
Cause-code breakdowns are not individually published for Mariposa County in the current FARS release. Statewide data for California may provide additional context.
Is the trend of road fatalities in Mariposa County increasing or decreasing?
The trend in Mariposa County is decreasing. This suggests road safety improvements are having a positive effect in the county.
What is the fatality rate per capita in Mariposa County?
Mariposa County has a fatality rate of 17.7 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 Mariposa County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Mariposa County ranks #1,018 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #20 of 54 rated counties in CA, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Mariposa County compare to the rest of California?
Mariposa County's per-capita rate of 17.7 per 100,000 residents is above the California county average of 16.9. Visit the California state page for the full county-by-county breakdown.
Where does the road fatality data for Mariposa 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.