Fatal Crash Data

Fatal crashes in Clayton County, Iowa

In 2024, 2 people died in 2 fatal crashes in Clayton County, Iowa, down from 3 in 2023. From 2015 to 2024 the county recorded 30 fatal crashes and 32 deaths, the 29th most of 99 counties in Iowa.

All fatal crashes in Iowa.

Deaths in Clayton County by year

201620182020202220242021: 62024: 2
YearFatal crashesDeaths
202422
202333
202222
202166
202044
201922
201835
201711
201644
201533

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 Clayton County

30% of the county's fatal crashes were on an interstate, US or state route; the other 70% were on county roads and city streets. Routes are listed from 5 fatal crashes.

No numbered road in Clayton County had 5 or more fatal crashes from 2015 to 2024.

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 Clayton County

30 fatal crashes in Clayton County, Iowa 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 7 am to 8 am; the worst month is June.

Share of fatal crashes in Clayton County, Iowa by weekday and time of day, 2015 to 2024, in percent
Midnight to 44 to 8 am8 to noonNoon to 44 to 8 pm8 to midnight
Sun10.0 percent, 3 fatal crashes0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash10.0 percent, 3 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes
Mon0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash0.0 percent, 0 fatal crashes
Tue0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash0.0 percent, 0 fatal crashes
Wed0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes
Thu0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash10.0 percent, 3 fatal crashes3.3 percent, 1 fatal crash6.7 percent, 2 fatal crashes0.0 percent, 0 fatal crashes
Fri0.0 percent, 0 fatal crashes0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash0.0 percent, 0 fatal crashes3.3 percent, 1 fatal crash3.3 percent, 1 fatal crash
Sat0.0 percent, 0 fatal crashes6.7 percent, 2 fatal crashes3.3 percent, 1 fatal crash10.0 percent, 3 fatal crashes13.3 percent, 4 fatal crashes0.0 percent, 0 fatal crashes

By hour

By month

  • Jan10.0%
  • Feb10.0%
  • Mar6.7%
  • Apr6.7%
  • May3.3%
  • Jun23.3%
  • Jul3.3%
  • Aug0.0%
  • Sep13.3%
  • Oct13.3%
  • Nov0.0%
  • Dec10.0%

Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count

What fatal crashes in Clayton County first hit

The first harmful event was a collision with another vehicle in 37%; a fixed object such as a tree, pole or barrier in 30%, a rollover in 17%, a pedestrian in 6.7%.

First harmful eventFatal crashesShare
Collision with another vehicle1137%
Fixed object (tree, pole, barrier, ditch)930%
Rollover517%
Other310%
Pedestrian26.7%
Cyclist00.0%
Parked vehicle00.0%
Not reported00.0%

Source: NHTSA Fatality Analysis Reporting System (FARS), 2024 Annual Report File (released April 2026, subject to revision). How we count

How fatal crashes in Clayton County compare with Iowa

The largest difference from Iowa: from 2015 to 2024, 100% of fatal crashes in Clayton County were on rural roads, against 72% across Iowa. Shares of fatal crashes from 2015 to 2024, against the share across all of Iowa. A share is only given over 20 crashes; above or below means more than chance would give on 30 crashes.

ClaytonIowa
On rural roads100%72%above the Iowa share
At or near an intersection20%27%about the same as the Iowa share
In the dark, road unlit17%28%about the same as the Iowa share
A drinking driver23%25%about the same as the Iowa share
Speeding10%20%about the same as the Iowa share
A distracted driver (as recorded)0.0%7.0%about the same as the Iowa share
Occupants killed unbeltedNot enough data45%
Hit-and-run0.0%2.0%about the same as the Iowa share
A motorcycle involved27%17%about the same as the Iowa share
Pedestrians among the dead6.2%7.1%about the same as the Iowa 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 Clayton County, Iowa

How many people died in car accidents in Clayton County in 2024?
2 people died in 2 fatal crashes in Clayton County, Iowa, in 2024, down from 3 in 2023. Source: NHTSA's Fatality Analysis Reporting System (FARS).
How many fatal crashes in Clayton County involved a drinking driver?
7 of 30 fatal crashes in Clayton County from 2015 to 2024 involved a driver NHTSA recorded as drinking, 23%, against 25% across Iowa.

Other counties in Iowa with a page

All fatal crashes in Iowa, with every county ranked.

Where the Clayton County numbers come from

Counted from NHTSA's Fatality Analysis Reporting System, 2024 Annual Report File: every fatal crash NHTSA filed in Clayton County (county code 43). 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.

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