Williamson County, Tennessee: fatal crash statistics

Counties of Tennessee by year (CSV)Cite this page

FARS records 12 deaths in 12 fatal crashes in Williamson County in 2024.

FARS records 162 deaths in 151 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 6.7 deaths for each 100,000 residents in a year.

The rate of Tennessee in the same years is 16.8.

By deaths from 2015 to 2024, Williamson County was number 13 of 95 counties of Tennessee.

Deaths in Williamson County rose by 31.7% between the ten years 2005 to 2014 (123) and the ten years 2015 to 2024 (162).

In the counties of Tennessee the deaths rose by 7.8% between the same years.

From 2015 to 2024, 39.2% of the occupants killed in Williamson County with restraint use known had no restraint, against 48.7% in Tennessee.

To qualify as a FARS case, the crash had to involve a motor vehicle traveling on a trafficway customarily open to the public and must have resulted in the death of a motorist or a non-motorist within 30 days of the crash.
The set of first files, known as the Annual Report File (ARF), is released following the crash year. The ARF is replaced about a year later with a final file, which contains additional cases or updates to cases that had become available after the ARF was released.
NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

This page rests on the FARS 2024 annual file. NHTSA released it on 1 Apr 2026. NHTSA can revise the counts in the final file. Release dates

Figure 1.Deaths in Williamson County by year, 2015 to 2024

Table 1 has the numbers. Go to the table

Since the last update: no figure of this county has a change on record.

Deaths and fatal crashes by year

Table 1.Williamson County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	12	12	5
2023	16	15	5
2022	26	23	5
2021	13	12	4
2020	18	16	7
2019	18	18	1 or 2
2018	12	12	1 or 2
2017	24	21	4
2016	13	13	4
2015	10	9	1 or 2
2015 to 2024	162	151	39

Each year from 1975

Figure 2.Deaths in Williamson County by year, 1975 to 2024

Tallest column: 28 (1987)2024: 12

The columns with a stronger shade are the years 2015 to 2024.

Table 2.Williamson County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	12	12
2023	16	15
2022	26	23
2021	13	12
2020	18	16
2019	18	18
2018	12	12
2017	24	21
2016	13	13
2015	10	9
2014	16	14
2013	17	16
2012	10	10
2011	9	8
2010	6	6
2009	11	11
2008	17	17
2007	17	15
2006	8	7
2005	12	11
2004	15	13
2003	14	14
2002	17	16
2001	25	21
2000	26	20
1999	20	19
1998	12	11
1997	18	16
1996	18	18
1995	15	13
1994	19	17
1993	9	8
1992	13	11
1991	10	9
1990	11	10
1989	10	10
1988	16	16
1987	28	20
1986	23	22
1985	14	14
1984	11	11
1983	13	12
1982	17	17
1981	17	16
1980	14	14
1979	14	12
1978	13	11
1977	17	14
1976	15	15
1975	12	12

Note: a count of 1 or 2 is written "1 or 2". A death is in FARS when it occurs in 30 days or less after the crash.

Rate for each 100,000 residents

Table 3.Williamson County beside Tennessee and the United States: deaths for each 100,000 residents
Period	Williamson County	Tennessee	United States
2024	4.5	16.5	11.5
2015 to 2024, in a year	6.7	16.8	11.8

Note: the rate divides the deaths in the county by its residents. Persons who do not live in the county are in the deaths, not in the residents.

Population: Census Bureau estimates, vintage 2025. Williamson County had 268,486 residents in 2024.

Factors that NHTSA records

Table 4.Williamson County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Tennessee
A driver recorded as drinkingof 151 fatal crashes	39	151 fatal crashes	25.8%	24.5%
A speeding-related driverof 151 fatal crashes	17	151 fatal crashes	11.3%	16.5%
No restraint usedof 120 occupant deaths with restraint use known	47	120 occupant deathswith restraint use known	39.2%	48.7%
Pedestriansof 162 deaths	8	162 deaths	4.9%	13.0%
Bicyclistsof 162 deaths	4	162 deaths	2.5%	0.8%
Motorcyclistsof 162 deaths	18	162 deaths	11.1%	13.8%
On a rural roadof 151 fatal crashes with the condition reported	64	151 fatal crasheswith the condition reported	42.4%	42.8%
In the darkof 150 fatal crashes with the condition reported	59	150 fatal crasheswith the condition reported	39.3%	46.2%

Note: FARS records a driver as drinking when police reported alcohol involvement or a test of the driver was positive for alcohol. It is not NHTSA's alcohol-impaired measure, which uses a blood alcohol concentration of .08 g/dL or higher. One crash can be in two or more rows. NHTSA's definitions

Note that alcohol data is often missing. For that reason, this data element may under-count the actual number of drinking drivers.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

Weekday, time and road class

Table 5.Williamson County: fatal crashes by weekday and time of day, 2015 to 2024
Weekday	Midnight to 6 a.m.	6 a.m. to noon	Noon to 6 p.m.	6 p.m. to midnight	All
Sunday	3	1 or 2	10	5	20
Monday	1 or 2	7	9	7	24
Tuesday	1 or 2	7	6	4	19
Wednesday	3	5	9	1 or 2	19
Thursday	1 or 2	6	8	4	20
Friday	5	5	4	3	17
Saturday	7	1 or 2	8	8	24
All days	23	33	54	33	143

Note: a cell with a stronger shade has a larger count. The table has the fatal crashes with a known hour and weekday.

Table 6.Williamson County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Tennessee
Interstate	55	36.4%	14.4%
Other freeways and expressways	0	0.0%	1.5%
Other principal arterial	34	22.5%	29.3%
Minor arterial	10	6.6%	23.5%
Major collector	19	12.6%	11.9%
Minor collector	12	7.9%	7.7%
Local	21	13.9%	11.7%
Not reported	0	n/a	n/a

Note: the classes are those of the Federal Highway Administration. The shares are of the crashes with a reported class. Road function classes

Light condition and weather

Table 7.Williamson County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	87
Dark, not lighted	44
Dark, lighted	15
Dawn	0
Dusk	4
Dark, lighting unknown	0
Other or unknown	1 or 2

Table 8.Williamson County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	110
Cloudy	25
Rain	12
Snow, sleet or freezing rain	1 or 2
Fog, smog or smoke	1 or 2
Crosswinds or blowing sand/snow	0
Other or not reported	1 or 2

Routes in the county

Table 9.Signed routes in Williamson County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Williamson	In all of Tennessee
Interstate 40	Interstate	1 or 2	588
Interstate 65	Interstate	33	148
Interstate 840	Interstate	20	48
State Route 46	State highway	1 or 2	24
State Route 96	State highway	9	47
State Route 100	State highway	3	41
US Route 31	US highway	3	62
US Route 31A	US highway	4	63
US Route 431	US highway	7	49

Note: the table has each route with a page that has a fatal crash in the county, in name order. Local streets and county roads have no page. Their crashes are in the county totals. All routes in Tennessee

Adjacent counties

These lists are for navigation. They are in name order.

Figure 3.Williamson County on the county map of Tennessee

Deaths for each 100,000 residents in a year, 2015 to 2024

Fewer than 102 counties
10 to 14.916 counties
15 to 19.927 counties
20 to 29.940 counties
30 or more10 counties
Williamson County: 6.7

The limits of the classes are the same for every state. A county with few residents can show a high rate from few deaths. A class is not a judgement of a county. The full map and the table of counties of Tennessee

Table 10.Counties that share a boundary line with Williamson County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Cheatham County	Tennessee	4	85	20.7
Davidson County	Tennessee	114	1,039	14.8
Dickson County	Tennessee	12	128	23.5
Hickman County	Tennessee	5	82	32.6
Marshall County	Tennessee	10	54	15.6
Maury County	Tennessee	14	156	15.6
Rutherford County	Tennessee	44	366	10.8

Source of the list: Census Bureau county adjacency file, 2026 edition.

Counties of similar population

These counties of Tennessee have a population nearest to that of Williamson County. The list is for navigation and is in name order. The number is the deaths from 2015 to 2024.

Official channels

NHTSA Fatality and Injury Reporting System Tool (FIRST)NHTSA's query tool for FARS counts.
NHTSA FARS EncyclopediaNHTSA's tables of FARS data.
Tennessee Highway Safety OfficeThe highway safety office of Tennessee.

These links go to the sites of the agencies. They were checked on 2 Oct 2026.

Cite this page

Fatal Roads. Williamson County, Tennessee: fatal crash statistics. https://fatalroads.com/county/tn/williamson/. Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, FARS 2024 annual file. Data to 31 Dec 2024.

The address of this page does not change.

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Source of the figures

Counts: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, national files of 1975 to 2024. The factors use the vehicle and person files from 2015. Residents: Census Bureau, Population Estimates Program, vintage 2025. Map: Census Bureau cartographic boundary file, 2021 edition. Data to 31 Dec 2024. The figures are totals. No page of this site is about one crash or one person.

How the figures are made. Data sources and licences. Corrections.

Questions

How many deaths did FARS record in Williamson in the ten years before 2015?

FARS records 123 deaths in Williamson County from 2005 to 2014. It records 162 deaths from 2015 to 2024.

What was the rate of Williamson in 2024?

The rate of Williamson County in 2024 was 4.5 deaths for each 100,000 residents. The rate of Tennessee was 16.5. The rate of the United States was 11.5.

How many fatal crashes in Williamson had a driver recorded as drinking?

FARS records a driver as drinking in 39 of 151 fatal crashes from 2015 to 2024. This count is not NHTSA's alcohol-impaired measure. NHTSA says that alcohol data is often missing, so the count may be too low.

How many fatal crashes did FARS record on signed routes in Williamson?

9 signed routes in the county have a page. FARS records 82 fatal crashes on them in the county from 2015 to 2024. The table of routes on this page gives the count for each route.