COUNTY FATALITY DATA
Williamson County: lower-rate fatality band
Williamson County (TN) is in the lower per-capita third: 6.1/100k (#2,131 of 2,328). Data period: 2016-2023.
- 140
- Total Fatalities (2016-2023)
- 16
- Latest Year Deaths
- High count
- 6.1
- Per 100k Residents
- Well below average
- Increasing
- Trend
Lower per-capita fatality band
Williamson County ranks #2,131 of 2,328 by deaths per 100,000 residents (6.1/100k) - bottom-third rate among rated U.S. counties.
Williamson County in the lower-rate third
According to NHTSA FARS, Williamson County sits in the lower-rate third at 6.1 per 100k (#2,131 of 2,328), #87 of 87 in TN.
- #2,131 of 2,328
- lower-rate third
- #494 of 3,137
- larger-book third
- #87 of 87
- in TN by rate
- Increasing
- fatality trend
NHTSA county milepost
Milepost WILLIAMSON-1 · Williamson 6.1/100k · #2,131 of 2,328
Williamson County · 6.1/100k · increasing
- CAUSE 6.1/100k
- PHOTO #2,131 of 2,328
- VS-ST 140 book
- CRASH Increasing
- FARS near Macomb
- NHTSA -71.1% vs TN
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 → · Tennessee state profile →
Williamson County rate neighbourhood
Deaths per 100,000 residents vs nearest nationwide rate peers (pop ≥250k).
- Chester
Chester County
6 per 100k
- Montgomery
Montgomery County
6 per 100k
- Sonoma
Sonoma County
6 per 100k
- Williamson
Williamson County
6 per 100k
- Macomb
Macomb County
6 per 100k
What this shows Williamson County sits among nearest nationwide per-capita peers.
How does Williamson County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Williamson County is 71% 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 Tennessee, Williamson County ranks 15 for per-capita risk, below the state's own per-capita average of 21.1 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 Williamson County's rate and the state average is 15.0 per 100,000. Its closest per-capita peer statewide is McNairy County, at 30.6 per 100,000 (a difference of 24.5). Its peer counties, highest to lowest per 100,000 residents: Haywood County (63.5), Crockett County (57.2), Cannon County (46.5), Bledsoe County (46.5), Meigs County (43.8), Jackson County (40.4), Cocke County (40.1), Henderson County (35.6), Campbell County (34.8), Macon County (33.6), Morgan County (32.4), McMinn County (32.3), Hardeman County (31.3), McNairy County (30.6).
Williamson 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 91% 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 Williamson 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 (6.1 here), outside Tennessee.
Similar fatality volume
Nearest counties by recorded FARS deaths (140 here), excluding the rate-peer set.
More road safety data related to Williamson County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Williamson County vs other counties by ratePer-100k fatality comparison
- Tennessee statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for TN
- 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 WLetter index including TN counties
- MACOMB County, MI fatalitiesSimilar nationwide FARS profile
- CHESTER County, PA fatalitiesSimilar nationwide FARS profile
- MONTGOMERY County, PA fatalitiesSimilar nationwide FARS profile
- SONOMA County, CA fatalitiesSimilar nationwide FARS profile
Frequently Asked Questions
How many traffic fatalities occurred in Williamson County, Tennessee?
Williamson County recorded 140 total traffic fatalities across 130 reported crashes over the data period (2016-2023). The most recent year saw 16 fatalities. The county averages approximately 15.6 fatalities per year.
What is the leading cause of road fatalities in Williamson County?
Despite a comparatively active crash history (130 recorded crashes), individual cause-code breakdowns are not published for Williamson County in the current FARS release. Statewide data for Tennessee may provide additional context.
Is the trend of road fatalities in Williamson County increasing or decreasing?
The trend in Williamson 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 Williamson County?
Williamson County has a fatality rate of 6.1 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 Williamson County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Williamson County ranks #2,131 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #87 of 87 rated counties in TN, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Williamson County compare to the rest of Tennessee?
Williamson County's per-capita rate of 6.1 per 100,000 residents is below the Tennessee county average of 21.1. Visit the Tennessee state page for the full county-by-county breakdown.
Where does the road fatality data for Williamson 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.