Fatal crashes in Waukesha County, Wisconsin
In 2024, 20 people died in 17 fatal crashes in Waukesha County, 25.9% fewer than in 2023. From 2015 to 2024 the county recorded 198 fatal crashes and 207 deaths, the 3rd most of any county in Wisconsin.
4.8 deaths per 100,000 residents, against 10 across Wisconsin in 2024; 5.1 against 10.2 a year over 2015 to 2024. Population 417,029, Census Bureau estimate. All fatal crashes in Wisconsin.
Deaths in Waukesha County by year
| Year | Fatal crashes | Deaths |
|---|---|---|
| 2024 | 17 | 20 |
| 2023 | 26 | 27 |
| 2022 | 20 | 20 |
| 2021 | 17 | 18 |
| 2020 | 16 | 16 |
| 2019 | 18 | 18 |
| 2018 | 24 | 25 |
| 2017 | 26 | 26 |
| 2016 | 25 | 27 |
| 2015 | 9 | 10 |
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
The deadliest roads in Waukesha County
I-94 had the most fatal crashes of any numbered road in Waukesha County from 2015 to 2024: 20, with 21 deaths. The 9 roads listed held 39% of all fatal crashes in Waukesha County from 2015 to 2024; 2 are interstates, 1 US route, 6 state highways. Interstate, US and state routes with 5 or more fatal crashes in the county; county roads and city streets are in the county's total but not listed.
| Road | Fatal crashes | Deaths | 2022 to 2024 | ||
|---|---|---|---|---|---|
| 1 | I-94 | 20 | 21 | 9 | |
| 2 | State Highway 59 | 9 | 9 | 2 | no page |
| 3 | State Highway 190 | 8 | 9 | 3 | |
| 4 | State Highway 83 | 8 | 8 | 0 | no page |
| 5 | State Highway 164 | 7 | 7 | 2 | no page |
| 6 | State Highway 67 | 7 | 7 | 4 | no page |
| 7 | US 18 | 7 | 7 | 4 | |
| 8 | I-41 | 6 | 6 | 1 | |
| 9 | State Highway 16 | 6 | 6 | 2 | no page |
Cities NHTSA filed, with their fatal crashes from 2015 to 2024: Waukesha 24, Brookfield 19, Pewaukee 16, Menomonee Falls 16, New Berlin 13, Delafield 7, Muskego 5. 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 Waukesha County
The heaviest slot is Wednesday, noon to 4 pm, with 10 fatal crashes from 2015 to 2024. The worst hour is 1 pm to 2 pm; the worst month is September.
| Midnight to 4 | 4 to 8 am | 8 to noon | Noon to 4 | 4 to 8 pm | 8 to midnight | |
|---|---|---|---|---|---|---|
| Sun | 1.0 percent, 2 fatal crashes | 1.6 percent, 3 fatal crashes | 1.6 percent, 3 fatal crashes | 3.6 percent, 7 fatal crashes | 4.7 percent, 9 fatal crashes | 2.6 percent, 5 fatal crashes |
| Mon | 1.6 percent, 3 fatal crashes | 1.6 percent, 3 fatal crashes | 3.1 percent, 6 fatal crashes | 3.6 percent, 7 fatal crashes | 2.6 percent, 5 fatal crashes | 1.6 percent, 3 fatal crashes |
| Tue | 0.5 percent, 1 fatal crashes | 1.0 percent, 2 fatal crashes | 2.6 percent, 5 fatal crashes | 2.6 percent, 5 fatal crashes | 3.1 percent, 6 fatal crashes | 2.6 percent, 5 fatal crashes |
| Wed | 1.0 percent, 2 fatal crashes | 2.1 percent, 4 fatal crashes | 4.2 percent, 8 fatal crashes | 5.2 percent, 10 fatal crashes | 3.1 percent, 6 fatal crashes | 1.0 percent, 2 fatal crashes |
| Thu | 1.0 percent, 2 fatal crashes | 1.0 percent, 2 fatal crashes | 2.1 percent, 4 fatal crashes | 2.6 percent, 5 fatal crashes | 4.2 percent, 8 fatal crashes | 2.6 percent, 5 fatal crashes |
| Fri | 1.0 percent, 2 fatal crashes | 0.5 percent, 1 fatal crashes | 1.6 percent, 3 fatal crashes | 2.6 percent, 5 fatal crashes | 3.6 percent, 7 fatal crashes | 1.0 percent, 2 fatal crashes |
| Sat | 1.6 percent, 3 fatal crashes | 2.1 percent, 4 fatal crashes | 1.6 percent, 3 fatal crashes | 4.2 percent, 8 fatal crashes | 3.1 percent, 6 fatal crashes | 5.2 percent, 10 fatal crashes |
By hour
By month
- Jan8.6%
- Feb4.5%
- Mar6.1%
- Apr5.6%
- May8.6%
- Jun10.6%
- Jul12.1%
- Aug8.6%
- Sep12.6%
- Oct7.1%
- Nov7.1%
- Dec8.6%
Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count
What fatal crashes in Waukesha 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 35%, a pedestrian in 9.6%, a rollover in 6.1%.
| First harmful event | Fatal crashes | Share |
|---|---|---|
| Collision with another vehicle | 77 | 39% |
| Fixed object (tree, pole, barrier, ditch) | 69 | 35% |
| Pedestrian | 19 | 9.6% |
| Rollover | 12 | 6.1% |
| Other | 10 | 5.1% |
| Cyclist | 7 | 3.5% |
| Parked vehicle | 4 | 2.0% |
| 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 Waukesha County compare with Wisconsin
A drinking driver was recorded in 28% of fatal crashes in Waukesha County from 2015 to 2024, below the Wisconsin share of 33%; speeding in 25%, below the Wisconsin share of 31%; a hit-and-run in 2.0%, below the Wisconsin share of 5.4%; a driver recorded as distracted in 11%, above the Wisconsin share of 9.9%; 41% of passenger-vehicle occupants killed with belt use known were unbelted, below the Wisconsin share of 48%. Shares of fatal crashes from 2015 to 2024, against the share across all of Wisconsin. A share is only given over 20 crashes.
| Waukesha | Wisconsin | ||
|---|---|---|---|
| On rural roads | 27% | 63% | below the Wisconsin share |
| At or near an intersection | 29% | 28% | about the same as the Wisconsin share |
| In the dark, road unlit | 27% | 27% | about the same as the Wisconsin share |
| A drinking driver | 28% | 33% | below the Wisconsin share |
| Speeding | 25% | 31% | below the Wisconsin share |
| A distracted driver (as recorded) | 11% | 9.9% | above the Wisconsin share |
| Occupants killed unbelted | 41% | 48% | below the Wisconsin share |
| Hit-and-run | 2.0% | 5.4% | below the Wisconsin share |
| A motorcycle involved | 19% | 17% | above the Wisconsin share |
| Pedestrians among the dead | 11% | 9.5% | above the Wisconsin 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 Waukesha County
- How many people died in car accidents in Waukesha County in 2024?
- 20 people died in 17 fatal crashes in Waukesha County, Wisconsin, in 2024, 25.9% fewer than in 2023. That is 4.8 deaths per 100,000 residents, against 10 across Wisconsin.
- What is the deadliest road in Waukesha County?
- I-94 had the most fatal crashes of any numbered road in Waukesha County from 2015 to 2024: 20, with 21 deaths.
- When do fatal crashes in Waukesha County happen most often?
- The heaviest slot from 2015 to 2024 was Wednesday, noon to 4 pm, with 10 fatal crashes.
- How many fatal crashes in Waukesha County involved a drinking driver?
- 56 of 198 fatal crashes in Waukesha County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 28%, against 33% across Wisconsin.
Other counties in Wisconsin with a page
- Milwaukee County
- Dane County
- Rock County
- Racine County
- Kenosha County
- Brown County
- Walworth County
- Outagamie County
- Dodge County
- Marathon County
- Fond du Lac County
- Winnebago County
All fatal crashes in Wisconsin, with every county ranked.
Where the Waukesha County numbers come from
Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Waukesha County (county code 133). 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. The full method.