Fatal crashes in Mason County, Washington
In 2024, 15 people died in 14 fatal crashes in Mason County, Washington, 28.6% fewer than in 2023. From 2015 to 2024 the county recorded 109 fatal crashes and 115 deaths, the 14th most of 39 counties in Washington.
21.5 deaths per 100,000 residents, against 9.2 across Washington in 2024; 17.5 against 8.2 a year over 2015 to 2024. Population 69,632, Census Bureau estimate. All fatal crashes in Washington.
Deaths in Mason County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 14 | 15 |
| 2023 | 20 | 21 |
| 2022 | 18 | 19 |
| 2021 | 9 | 10 |
| 2020 | 14 | 15 |
| 2019 | 9 | 10 |
| 2018 | 4 | 4 |
| 2017 | 6 | 6 |
| 2016 | 7 | 7 |
| 2015 | 8 | 8 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in Mason County
US 101 had the most fatal crashes of any numbered road in Mason County from 2015 to 2024: 25, with 29 deaths. The 3 roads listed held 44% of all fatal crashes in Mason County from 2015 to 2024; 1 US route, 2 state highways. 50% of the county's fatal crashes were on an interstate, US or state route; the other 50% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | US 101 | 25 | 29 | 13 | |
| 2 | State Highway 3 | 18 | 18 | 9 | |
| 3 | State Highway 108 | 5 | 5 | 1 | no page |
Shelton had 9.2% of the county's fatal crashes from 2015 to 2024, 10 of 109.
Cities NHTSA filed, with their fatal crashes from 2015 to 2024: Shelton 10. The city is not filed for crashes outside a city.
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
When fatal crashes happen in Mason County
The heaviest slot is Sunday, 4 to 8 pm, with 14 fatal crashes from 2015 to 2024. The worst hour is 6 pm to 7 pm; the worst month is April.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 4.6 percent, 5 fatal crashes | 0.9 percent, 1 fatal crash | 1.8 percent, 2 fatal crashes | 1.8 percent, 2 fatal crashes | 12.8 percent, 14 fatal crashes | 4.6 percent, 5 fatal crashes |
| Mon | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash | 4.6 percent, 5 fatal crashes | 2.8 percent, 3 fatal crashes | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash |
| Tue | 1.8 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 0.9 percent, 1 fatal crash | 4.6 percent, 5 fatal crashes | 3.7 percent, 4 fatal crashes | 0.9 percent, 1 fatal crash |
| Wed | 1.8 percent, 2 fatal crashes | 3.7 percent, 4 fatal crashes | 0.0 percent, 0 fatal crashes | 0.9 percent, 1 fatal crash | 3.7 percent, 4 fatal crashes | 1.8 percent, 2 fatal crashes |
| Thu | 0.0 percent, 0 fatal crashes | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash | 1.8 percent, 2 fatal crashes | 1.8 percent, 2 fatal crashes | 2.8 percent, 3 fatal crashes |
| Fri | 0.0 percent, 0 fatal crashes | 1.8 percent, 2 fatal crashes | 0.9 percent, 1 fatal crash | 1.8 percent, 2 fatal crashes | 5.5 percent, 6 fatal crashes | 3.7 percent, 4 fatal crashes |
| Sat | 1.8 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 0.9 percent, 1 fatal crash | 3.7 percent, 4 fatal crashes | 5.5 percent, 6 fatal crashes | 1.8 percent, 2 fatal crashes |
By hour
By month
- Jan7.3%
- Feb6.4%
- Mar8.3%
- Apr11.9%
- May5.5%
- Jun8.3%
- Jul10.1%
- Aug7.3%
- Sep6.4%
- Oct6.4%
- Nov10.1%
- Dec11.9%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in Mason County first hit
The first harmful event was a collision with another vehicle in 39%; a fixed object such as a tree, pole or barrier in 37%, a rollover in 11%, a pedestrian in 10%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 42 | 39% |
| Fixed object (tree, pole, barrier, ditch) | 40 | 37% |
| Rollover | 12 | 11% |
| Pedestrian | 11 | 10% |
| Other | 4 | 3.7% |
| Cyclist | 0 | 0.0% |
| Parked vehicle | 0 | 0.0% |
| Not reported | 0 | 0.0% |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
How fatal crashes in Mason County compare with Washington
The largest difference from Washington: from 2015 to 2024, 82% of fatal crashes in Mason County were on rural roads, against 42% across Washington. Also above the Washington share: unlit roads at night. Below it: intersections and pedestrians. Shares of fatal crashes from 2015 to 2024, against the share across all of Washington. A share is only given over 20 crashes; above or below means more than chance would give on 109 crashes.
| Mason | Washington | ||
|---|---|---|---|
| On rural roads | 82% | 42% | above the Washington share |
| At or near an intersection | 14% | 26% | below the Washington share |
| In the dark, road unlit | 32% | 24% | above the Washington share |
| A drinking driver | 39% | 31% | about the same as the Washington share |
| Speeding | 35% | 31% | about the same as the Washington share |
| A distracted driver (as recorded) | 28% | 21% | about the same as the Washington share |
| Occupants killed unbelted | 32% | 40% | about the same as the Washington share |
| Hit-and-run | 1.8% | 6.3% | about the same as the Washington share |
| A motorcycle involved | 10% | 17% | about the same as the Washington share |
| Pedestrians among the dead | 9.6% | 18% | below the Washington share |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Questions about fatal crashes in Mason County, Washington
- How many people died in car accidents in Mason County in 2024?
- 15 people died in 14 fatal crashes in Mason County, Washington, in 2024, 28.6% fewer than in 2023. That is 21.5 deaths per 100,000 residents, against 9.2 across Washington. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- What is the deadliest road in Mason County?
- US 101 had the most fatal crashes of any numbered road in Mason County from 2015 to 2024: 25, with 29 deaths.
- When do fatal crashes in Mason County happen most often?
- The heaviest slot from 2015 to 2024 was Sunday, 4 to 8 pm, with 14 fatal crashes.
- How many fatal crashes in Mason County involved a drinking driver?
- 43 of 109 fatal crashes in Mason County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 39%, against 31% across Washington.
Other counties in Washington with a page
- King County
- Pierce County
- Snohomish County
- Spokane County
- Yakima County
- Clark County
- Thurston County
- Grant County
- Kitsap County
- Benton County
- Skagit County
- Whatcom County
All fatal crashes in Washington, with every county ranked.
Where the Mason County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Mason County (county code 45). A fatal crash is one in which someone died within 30 days. The rate per 100,000 uses the Census Bureau's population estimate for the county; it is the only figure here not counted from FARS. Totals from state highway departments and news reports can differ: they count from their own crash reports, often before every death within 30 days is known, while NHTSA's file is checked against death certificates and revised once a year. The full method.
Download every county with a page as CSV. Free to reuse with credit: “Fatal Crash Data, fatalcrashdata.com/fatal-crashes/washington/mason-county/, from NHTSA FARS (2024 Annual Report File).”