COUNTY FATALITY DATA
Rock County: larger FARS fatality book
Rock County (WI) holds a larger FARS book (175, #377 of 3,137) with 12 latest-year deaths.
- 175
- Total Fatalities (2016-2023)
- 12
- Latest Year Deaths
- Near average count
- 7.3
- Per 100k Residents
- Well below average
- Increasing
- Trend
Larger fatality book
Rock County ranks #377 of 3,137 by total FARS fatalities (175 across 2016-2023) - top-third book size.
Rock County in the larger-book third
According to NHTSA FARS, Rock County carries a top-third fatality book (175 across 2016-2023, #377 of 3,137) at 7.3/100k.
- #2,021 of 2,328
- lower-rate third
- #377 of 3,137
- larger-book third
- #51 of 67
- in WI by rate
- Increasing
- fatality trend
FARS milepost strip
Milepost ROCK-105 · Rock 7.3/100k · #2,021 of 2,328
Rock County · 7.3/100k · increasing
- FARS 7.3/100k
- NHTSA #2,021 of 2,328
- MILE 175 book
- POST Increasing
- BAND 161 crash
- VOL -46.8% vs WI
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 → · Wisconsin state profile →
How does Rock County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Rock County is 47% 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 Wisconsin, Rock County ranks 15 for per-capita risk, below the state's own per-capita average of 13.7 per 100,000 -- nationally, this rate leaves it safer than most U.S. counties by that per-capita measure. The gap between Rock County's rate and the state average is 6.4 per 100,000. Its closest per-capita peer statewide is Green County, at 18.9 per 100,000 (a difference of 11.6). Its peer counties, highest to lowest per 100,000 residents: Adams County (37.3), Lafayette County (35.4), Polk County (35.0), Sawyer County (32.3), Waushara County (32.1), Lincoln County (31.7), Burnett County (29.3), Iowa County (29.2), Richland County (23.3), Buffalo County (22.4), Rusk County (21.2), Jackson County (19.2), Fond Du Lac County (19.2), Green County (18.9).
Rock County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
7 Among the safer counties a lower per-capita rate than 86% 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 Rock County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Rock County vs other counties by ratePer-100k fatality comparison
- Wisconsin statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for WI
- 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 RLetter index including WI counties
Frequently Asked Questions
How many traffic fatalities occurred in Rock County, Wisconsin?
Rock County recorded 175 total traffic fatalities across 161 reported crashes over the data period (2016-2023). The most recent year saw 12 fatalities. The county averages approximately 19.4 fatalities per year.
What is the leading cause of road fatalities in Rock County?
Despite a comparatively active crash history (161 recorded crashes), individual cause-code breakdowns are not published for Rock County in the current FARS release. Statewide data for Wisconsin may provide additional context.
Is the trend of road fatalities in Rock County increasing or decreasing?
The trend in Rock 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 Rock County?
Rock County has a fatality rate of 7.3 per 100,000 residents, which leaves it safer than most U.S. counties by that per-capita measure among the 3,137 U.S. counties in this dataset.
Where does Rock County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Rock County ranks #2,021 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #51 of 67 rated counties in WI, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Rock County compare to the rest of Wisconsin?
Rock County's per-capita rate of 7.3 per 100,000 residents is below the Wisconsin county average of 13.7. Visit the Wisconsin state page for the full county-by-county breakdown.
Where does the road fatality data for Rock 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.