COUNTY FATALITY DATA
Hamilton County: smaller FARS fatality book
Hamilton County (IA) holds a smaller FARS book (22, #2,287 of 3,137) with 2 latest-year deaths.
- 22
- Total Fatalities (2016-2023)
- 2
- Latest Year Deaths
- Low count
- 13.6
- Per 100k Residents
- Below average
- Stable
- Trend
Smaller fatality book
Hamilton County ranks #2,287 of 3,137 by total FARS fatalities (22 across 2016-2023) - bottom-third book size.
Hamilton County in the smaller-book third
According to NHTSA FARS, Hamilton County carries a bottom-third fatality book (22 across 2016-2023, #2,287 of 3,137) at 13.6/100k.
- #1,392 of 2,328
- among rated U.S. counties by rate
- #2,287 of 3,137
- smaller-book third
- #32 of 68
- in IA by rate
- Stable
- fatality trend
FARS county milepost
Milepost HAMILTON-79 · Hamilton 13.6/100k · #1,392 of 2,328
Hamilton County · 13.6/100k · stable
- TREND 13.6/100k
- CAUSE #1,392 of 2,328
- PHOTO 22 book
- VS-ST Stable
- CRASH 22 crash
- FARS -13.8% vs IA
Stamps derive from this county's NHTSA FARS row (per-100k or book, corpus rank, trend, nationwide peer NAME, vs-state gap), not a trip-risk forecast. PlainRoadSafety is informational only. See our disclaimer. Verify with NHTSA FARS → · Read with methodology → · Understanding road fatality data → · Iowa state profile →
How does Hamilton County compare?
2023 road deaths per 100,000 residents. Choose any comparison from the menu.
Hamilton County is About the same as the comparison
2023 road deaths from the NHTSA Fatality Analysis Reporting System over population from the U.S. Census Bureau Population Estimates Program (Vintage 2023). Rates shown for counties with 10,000+ residents and a 2023 FARS record.
Among the 15 rated counties in Iowa, Hamilton County ranks 15 for per-capita risk, below the state's own per-capita average of 15.8 per 100,000 -- nationally, this rate places it close to the national middle by that per-capita measure. The gap between Hamilton County's rate and the state average is 2.2 per 100,000. Its closest per-capita peer statewide is Madison County, at 23.6 per 100,000 (a difference of 10.0). Its peer counties, highest to lowest per 100,000 residents: Louisa County (66.6), Union County (50.4), Harrison County (47.7), Cass County (38.1), Floyd County (32.6), Grundy County (32.3), Iowa County (30.5), Cedar County (27.3), Poweshiek County (27.1), Page County (26.6), Boone County (26.3), Winneshiek County (25.2), Wright County (23.7), Madison County (23.6).
Hamilton County's rate vs. every rated U.S. county
Deaths per 100,000 residents -- counties with 10,000+ people, NHTSA FARS over Census population
14 Lower than most a lower per-capita rate than 60% of 2,328 rated counties
rated U.S. counties, bucketed by value
Each bar is a band; taller bars hold more rated counties. The dashed line + filled bar mark this entry. Hover or tap any bar for its full count and share, and where it sits relative to this entry.
Source NHTSA FARS over U.S. Census Bureau population estimates · 2026-09-03
More road safety data related to Hamilton County
Contextual links from this profile to rankings, tools, research, and peer geographies on PlainRoadSafety.
- Hamilton County vs other counties by ratePer-100k fatality comparison
- Iowa statewide fatality dataAll counties in this state
- Deadliest states for drivingContext for IA
- State fatality changesYear-over-year state trends
- Browse all U.S. countiesAlphabetical county index
- All state profiles51 state dashboards
- State vs U.S. safety comparisonRoute-level lookup tool
- National statistics downloadFARS CSV + findings
- How to read FARS fatality dataMethodology primer
- Per-mile vs per-capita road riskRate denominator explained
- Counties starting with HLetter index including IA counties
Frequently Asked Questions
How many traffic fatalities occurred in Hamilton County, Iowa?
Hamilton County recorded 22 total traffic fatalities across 22 reported crashes over the data period (2016-2023). The most recent year saw 2 fatalities. The county averages approximately 2.4 fatalities per year.
What is the leading cause of road fatalities in Hamilton County?
Cause-code breakdowns are not individually published for Hamilton County in the current FARS release. Statewide data for Iowa may provide additional context.
Is the trend of road fatalities in Hamilton County increasing or decreasing?
The trend in Hamilton County is stable. Fatality counts have remained relatively consistent over the data period.
What is the fatality rate per capita in Hamilton County?
Hamilton County has a fatality rate of 13.6 per 100,000 residents, which places it close to the national middle by that per-capita measure among the 3,137 U.S. counties in this dataset.
Where does Hamilton County rank for road fatality rate?
According to the National Highway Traffic Safety Administration Fatality Analysis Reporting System, Hamilton County ranks #1,392 of 2,328 U.S. counties by road-fatality rate per 100,000 residents (highest first) and #32 of 68 rated counties in IA, the same sort used on the deadliest-states and county rate listings. See /methodology#corpus-placement.
How does Hamilton County compare to the rest of Iowa?
Hamilton County's per-capita rate of 13.6 per 100,000 residents is below the Iowa county average of 15.8. Visit the Iowa state page for the full county-by-county breakdown.
Where does the road fatality data for Hamilton County come from?
All road fatality data comes from the NHTSA Fatality Analysis Reporting System (FARS), a census of fatal motor vehicle crashes on public roads in the United States. FARS data covers the period 2016-2023 and includes all crashes resulting in at least one fatality within 30 days.