CrashRate

Fatal crash rate · Iowa

Fatal crash rate in Lyon County, Iowa

Fatal crashes recorded by NHTSA in Lyon County, Iowa, 2020 to 2024, divided by the people who live there. Fatal crashes only: not injuries, not all crashes, not traffic in general.

Lyon County, Iowa2024 · fatal crashes recorded by NHTSA

16.1fatal crashes per 100,000 residents in 2024

In 2024, NHTSA recorded 2 fatal crashes in Lyon County, Iowa, where 12,404 people lived. That is 16.1 fatal crashes for every 100,000 residents, and 2 people died in those crashes. Over 2020 to 2024 the average was 9.9.

The road is a scale of fatal crashes per 100,000 residents in 2024, 0 to 40. The yellow post is Lyon County; the white posts are Iowa and the United States. The shaded band is how far one crash moves Lyon County’s post.

Small population. Lyon County has 12,404 residents, so one crash moves the rate by 8.1 points and a single bad year can double it. Read the five-year average and the count, not the one-year rate alone.
Per 100,000
2 fatal crashes ÷ 12,404 residents × 100,000 = 16.1
Five-year
6 crashes (2020 to 2024) ÷ 60,852 resident-years × 100,000 = 9.9
Same year
Iowa: 324 ÷ 3,230,454 = 10.0 · United States: 36,297 ÷ 340,003,797 = 10.7

Every year, 2020 to 2024

YearFatal crashesDeathsPopulationPer 100,000
20201111,9248.4
20211112,0358.3
20221112,1808.2
20231112,3098.1
20242212,40416.1

2024 is NHTSA’s Annual Report File and will be revised when the final file replaces it. Populations are July 1 estimates, Census Vintage 2025.

What the record says about those crashes, 2020 to 2024

Every figure is a count of the 6 fatal crashes NHTSA coded to Lyon County, Iowa over five years, from the fields FARS records. Nothing is estimated or inferred.

Road typeCrashesShare
Interstate00%
Other freeway or expressway00%
Other principal arterial00%
Minor arterial350%
Major collector117%
Minor collector233%
Local road00%
Unknown or not reported00%
Rural6100%
Urban00%
Time of dayCrashesShare
Midnight to 5:59 am00%
6 am to 11:59 am350%
Noon to 5:59 pm233%
6 pm to 11:59 pm117%
Hour unknown00%
LightCrashesShare
Daylight583%
Dark, not lighted (or lighting unknown)117%
Dark, lighted00%
Dawn or dusk00%
Unknown or not reported00%
WeatherCrashesShare
Clear583%
Cloudy00%
Rain00%
Snow, sleet or freezing rain00%
Fog, smog or smoke117%
Severe wind, blowing sand or other00%
Unknown or not reported00%
InvolvingCrashesShare
A pedestrian00%
A bicyclist or other cyclist00%
A speeding-related vehicle00%
A driver police reported as drinking117%
Most-named roadsCrashes
US-752
CR-A52/260TH ST1
CR-A50/260TH ST1
SR-91
CR-K60/INDIAN AVE1

Road type is FARS FUNC_SYS; speeding is any vehicle coded SPEEDREL 2 to 5; drinking is any driver coded DRINKING = 1 (police-reported, not a blood-alcohol test). Road names are the trafficway strings as the police coded them, counted as written, so the same road can appear under two spellings.

How this is counted

  • Fatal crashes are rows in NHTSA’s Fatality Analysis Reporting System (FARS) file FARS2024NationalCSV.zip, accident.csv, one row per crash on a public road in which someone died within 30 days. Deaths are the FATALS field. Counties are the FARS STATE and COUNTY codes joined to Census FIPS codes.
  • Population is the Census Bureau’s July 1 estimate for the same year, county totals, Vintage 2025. Rate per 100,000 = crashes ÷ population × 100,000.
  • The five-year average is total crashes over the years with both inputs ÷ total population over those years × 100,000, the rolling form in 23 CFR 490.207.
  • What it cannot say. FARS has no injury-only or property-damage crashes, no congestion, and nothing about any one driver, trip or road’s risk. A crash is counted where it happened, not where the people lived. Rates are not ranked here; comparing two places means comparing both sets of inputs.

Informational only, not professional advice. Last reviewed: October 2026. Data snapshot built 2026-10-28.