Mason County, Washington: fatal crash statistics

Counties of Washington by year (CSV)Cite this page

FARS records 15 deaths in 14 fatal crashes in Mason County in 2024.

FARS records 115 deaths in 109 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 17.4 deaths for each 100,000 residents in a year.

The rate of Washington in the same years is 8.2.

By deaths from 2015 to 2024, Mason County was number 14 of 39 counties of Washington.

Deaths in Mason County rose by 25.0% between the ten years 2005 to 2014 (92) and the ten years 2015 to 2024 (115).

In the counties of Washington the deaths rose by 22.3% between the same years.

From 2015 to 2024, 81.7% of the fatal crashes in Mason County with a known setting were rural, against 41.9% in Washington.

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 Mason 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.Mason County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	15	14	7
2023	21	20	7
2022	19	18	9
2021	10	9	3
2020	15	14	6
2019	10	9	1 or 2
2018	4	4	1 or 2
2017	6	6	4
2016	7	7	3
2015	8	8	1 or 2
2015 to 2024	115	109	43

Each year from 1975

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

Tallest column: 21 (2023)2024: 15

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

Table 2.Mason County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	15	14
2023	21	20
2022	19	18
2021	10	9
2020	15	14
2019	10	9
2018	4	4
2017	6	6
2016	7	7
2015	8	8
2014	8	7
2013	12	10
2012	5	4
2011	10	7
2010	6	6
2009	5	5
2008	9	8
2007	8	8
2006	15	15
2005	14	13
2004	12	10
2003	12	11
2002	10	9
2001	12	11
2000	12	10
1999	13	10
1998	13	12
1997	7	7
1996	15	15
1995	9	8
1994	10	10
1993	9	7
1992	17	17
1991	7	7
1990	11	11
1989	15	14
1988	16	14
1987	14	11
1986	12	10
1985	5	5
1984	9	8
1983	11	9
1982	6	6
1981	8	8
1980	7	6
1979	10	10
1978	8	6
1977	14	10
1976	17	15
1975	5	5

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.Mason County beside Washington and the United States: deaths for each 100,000 residents
Period	Mason County	Washington	United States
2024	21.5	9.2	11.5
2015 to 2024, in a year	17.4	8.2	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. Mason County had 69,759 residents in 2024.

Factors that NHTSA records

Table 4.Mason County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Washington
A driver recorded as drinkingof 109 fatal crashes	43	109 fatal crashes	39.4%	31.1%
A speeding-related driverof 109 fatal crashes	38	109 fatal crashes	34.9%	31.1%
No restraint usedof 86 occupant deaths with restraint use known	30	86 occupant deathswith restraint use known	34.9%	40.8%
Pedestriansof 115 deaths	11	115 deaths	9.6%	18.4%
Bicyclistsof 115 deaths	0	115 deaths	0.0%	2.2%
Motorcyclistsof 115 deaths	11	115 deaths	9.6%	15.7%
On a rural roadof 109 fatal crashes with the condition reported	89	109 fatal crasheswith the condition reported	81.7%	41.9%
In the darkof 109 fatal crashes with the condition reported	46	109 fatal crasheswith the condition reported	42.2%	47.7%

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.Mason 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	5	3	5	16	29
Monday	1 or 2	6	5	1 or 2	14
Tuesday	1 or 2	1 or 2	8	1 or 2	13
Wednesday	4	1 or 2	3	4	13
Thursday	0	3	3	4	10
Friday	1 or 2	1 or 2	3	9	15
Saturday	1 or 2	1 or 2	8	4	15
All days	17	17	35	40	109

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.Mason County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Washington
Interstate	0	0.0%	12.4%
Other freeways and expressways	12	11.1%	6.1%
Other principal arterial	35	32.4%	30.8%
Minor arterial	8	7.4%	19.2%
Major collector	40	37.0%	18.2%
Minor collector	9	8.3%	3.8%
Local	4	3.7%	9.5%
Not reported	1 or 2	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.Mason County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	58
Dark, not lighted	35
Dark, lighted	8
Dawn	1 or 2
Dusk	4
Dark, lighting unknown	3
Other or unknown	0

Table 8.Mason County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	69
Cloudy	15
Rain	20
Snow, sleet or freezing rain	0
Fog, smog or smoke	4
Crosswinds or blowing sand/snow	0
Other or not reported	1 or 2

Routes in the county

Table 9.Signed routes in Mason County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Mason	In all of Washington
State Route 3	State highway	18	42
US Route 101	US highway	25	97

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 Washington

Adjacent counties

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

Figure 3.Mason County on the county map of Washington

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

Fewer than 1018 counties
10 to 14.98 counties
15 to 19.94 counties
20 to 29.94 counties
30 or more5 counties
Mason County: 17.4

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 Washington

Table 10.Counties that share a boundary line with Mason County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Grays Harbor County	Washington	10	92	12.3
Jefferson County	Washington	5	54	16.6
Kitsap County	Washington	18	177	6.5
Pierce County	Washington	102	794	8.8
Thurston County	Washington	26	219	7.6

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

Counties of similar population

These counties of Washington have a population nearest to that of Mason 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.
Washington Traffic Safety CommissionThe highway safety office of Washington.

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

Cite this page

Fatal Roads. Mason County, Washington: fatal crash statistics. https://fatalroads.com/county/wa/mason/. 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 Mason in the ten years before 2015?

FARS records 92 deaths in Mason County from 2005 to 2014. It records 115 deaths from 2015 to 2024.

What was the rate of Mason in 2024?

The rate of Mason County in 2024 was 21.5 deaths for each 100,000 residents. The rate of Washington was 9.2. The rate of the United States was 11.5.

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

FARS records a driver as drinking in 43 of 109 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 Mason?

FARS records 18 fatal crashes on State Route 3 in the county from 2015 to 2024. FARS records 25 fatal crashes on US Route 101 in the county from 2015 to 2024.