Fatal crashes in Jefferson County, Idaho
In 2024, 1 person died in 1 fatal crash in Jefferson County, Idaho, down from 8 in 2023. From 2015 to 2024 the county recorded 33 fatal crashes and 35 deaths, the 19th most of 44 counties in Idaho.
Deaths in Jefferson County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 1 | 1 |
| 2023 | 7 | 8 |
| 2022 | 4 | 5 |
| 2021 | 2 | 2 |
| 2020 | 2 | 2 |
| 2019 | 2 | 2 |
| 2018 | 4 | 4 |
| 2017 | 4 | 4 |
| 2016 | 3 | 3 |
| 2015 | 4 | 4 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
Numbered roads with fatal crashes in Jefferson County
The 2 roads listed held 36% of all fatal crashes in Jefferson County from 2015 to 2024; 1 is an interstate, 1 state highway. 61% of the county's fatal crashes were on an interstate, US or state route; the other 39% were on county roads and city streets. Routes are listed from 5 fatal crashes.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | I-15 | 6 | 6 | 1 | |
| 2 | State Highway 33 | 6 | 6 | 2 | no page |
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 Jefferson County
33 fatal crashes in Jefferson County, Idaho from 2015 to 2024 have a known time, too few for any one weekday and time of day to stand out. The worst hour is 8 am to 9 am; 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 | 3.0 percent, 1 fatal crash | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 3.0 percent, 1 fatal crash | 3.0 percent, 1 fatal crash |
| Mon | 0.0 percent, 0 fatal crashes | 3.0 percent, 1 fatal crash | 0.0 percent, 0 fatal crashes | 9.1 percent, 3 fatal crashes | 3.0 percent, 1 fatal crash | 3.0 percent, 1 fatal crash |
| Tue | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes |
| Wed | 0.0 percent, 0 fatal crashes | 3.0 percent, 1 fatal crash | 6.1 percent, 2 fatal crashes | 3.0 percent, 1 fatal crash | 6.1 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes |
| Thu | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 6.1 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 6.1 percent, 2 fatal crashes | 3.0 percent, 1 fatal crash |
| Fri | 0.0 percent, 0 fatal crashes | 0.0 percent, 0 fatal crashes | 12.1 percent, 4 fatal crashes | 6.1 percent, 2 fatal crashes | 0.0 percent, 0 fatal crashes | 3.0 percent, 1 fatal crash |
| Sat | 0.0 percent, 0 fatal crashes | 3.0 percent, 1 fatal crash | 3.0 percent, 1 fatal crash | 0.0 percent, 0 fatal crashes | 9.1 percent, 3 fatal crashes | 3.0 percent, 1 fatal crash |
By hour
By month
- Jan0.0%
- Feb6.1%
- Mar3.0%
- Apr15.2%
- May12.1%
- Jun12.1%
- Jul15.2%
- Aug6.1%
- Sep15.2%
- Oct3.0%
- Nov3.0%
- Dec9.1%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in Jefferson County first hit
The first harmful event was a collision with another vehicle in 49%; a rollover in 24%, a fixed object such as a tree, pole or barrier in 15%, a pedestrian in 3.0%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 16 | 49% |
| Rollover | 8 | 24% |
| Fixed object (tree, pole, barrier, ditch) | 5 | 15% |
| Other | 2 | 6.1% |
| Pedestrian | 1 | 3.0% |
| Cyclist | 1 | 3.0% |
| 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 Jefferson County compare with Idaho
The largest difference from Idaho: from 2015 to 2024, 91% of fatal crashes in Jefferson County were on rural roads, against 75% across Idaho. Shares of fatal crashes from 2015 to 2024, against the share across all of Idaho. A share is only given over 20 crashes; above or below means more than chance would give on 33 crashes.
| Jefferson | Idaho | ||
|---|---|---|---|
| On rural roads | 91% | 75% | above the Idaho share |
| At or near an intersection | 24% | 21% | about the same as the Idaho share |
| In the dark, road unlit | 21% | 27% | about the same as the Idaho share |
| A drinking driver | 36% | 31% | about the same as the Idaho share |
| Speeding | 21% | 22% | about the same as the Idaho share |
| A distracted driver (as recorded) | 24% | 15% | about the same as the Idaho share |
| Occupants killed unbelted | 64% | 58% | about the same as the Idaho share |
| Hit-and-run | 3.0% | 1.7% | about the same as the Idaho share |
| A motorcycle involved | 12% | 14% | about the same as the Idaho share |
| Pedestrians among the dead | 2.9% | 6.9% | about the same as the Idaho 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 Jefferson County, Idaho
- How many people died in car accidents in Jefferson County in 2024?
- 1 person died in 1 fatal crash in Jefferson County, Idaho, in 2024, down from 8 in 2023. Source: NHTSA's Fatality Analysis Reporting System (FARS).
- How many fatal crashes in Jefferson County involved a drinking driver?
- 12 of 33 fatal crashes in Jefferson County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 36%, against 31% across Idaho.
Other counties in Idaho with a page
- Ada County
- Canyon County
- Kootenai County
- Bonneville County
- Twin Falls County
- Jerome County
- Bingham County
- Bannock County
- Elmore County
- Bonner County
- Idaho County
- Nez Perce County
All fatal crashes in Idaho, with every county ranked.
Where the Jefferson County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Jefferson County (county code 51). 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/idaho/jefferson-county/, from NHTSA FARS (2024 Annual Report File).”