Warren County, Ohio: fatal crash statistics

Counties of Ohio by year (CSV)Cite this page

FARS records 11 deaths in 10 fatal crashes in Warren County in 2024.

FARS records 167 deaths in 156 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 7.0 deaths for each 100,000 residents in a year.

The rate of Ohio in the same years is 10.1.

By deaths from 2015 to 2024, Warren County was number 17 of 88 counties of Ohio.

Deaths in Warren County rose by 9.9% between the ten years 2005 to 2014 (152) and the ten years 2015 to 2024 (167).

In the counties of Ohio the deaths rose by 5.9% between the same years.

From 2015 to 2024, a driver was recorded as drinking in 22.4% of fatal crashes in Warren County and 31.7% in Ohio.

To qualify as a FARS case, the crash had to involve a motor vehicle traveling on a trafficway customarily open to the public and must have resulted in the death of a motorist or a non-motorist within 30 days of the crash.
The set of first files, known as the Annual Report File (ARF), is released following the crash year. The ARF is replaced about a year later with a final file, which contains additional cases or updates to cases that had become available after the ARF was released.
NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

This page rests on the FARS 2024 annual file. NHTSA released it on 1 Apr 2026. NHTSA can revise the counts in the final file. Release dates

Figure 1.Deaths in Warren County by year, 2015 to 2024

Table 1 has the numbers. Go to the table

Since the last update: no figure of this county has a change on record.

Deaths and fatal crashes by year

Table 1.Warren County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	11	10	3
2023	23	20	3
2022	25	23	6
2021	8	7	1 or 2
2020	15	15	3
2019	21	19	5
2018	18	17	5
2017	15	15	5
2016	16	16	1 or 2
2015	15	14	3
2015 to 2024	167	156	35

Each year from 1975

Figure 2.Deaths in Warren County by year, 1975 to 2024

Tallest column: 40 (1987)2024: 11

The columns with a stronger shade are the years 2015 to 2024.

Table 2.Warren County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	11	10
2023	23	20
2022	25	23
2021	8	7
2020	15	15
2019	21	19
2018	18	17
2017	15	15
2016	16	16
2015	15	14
2014	10	9
2013	17	16
2012	27	19
2011	11	10
2010	15	15
2009	14	12
2008	11	11
2007	16	14
2006	10	10
2005	21	19
2004	16	16
2003	18	17
2002	17	16
2001	23	19
2000	15	13
1999	28	25
1998	16	15
1997	17	16
1996	14	14
1995	20	15
1994	21	18
1993	22	21
1992	21	18
1991	22	18
1990	13	13
1989	25	19
1988	24	21
1987	40	34
1986	28	25
1985	21	20
1984	15	13
1983	21	20
1982	16	16
1981	18	17
1980	26	21
1979	35	30
1978	21	19
1977	21	20
1976	16	16
1975	28	24

Note: a count of 1 or 2 is written "1 or 2". A death is in FARS when it occurs in 30 days or less after the crash.

Rate for each 100,000 residents

Table 3.Warren County beside Ohio and the United States: deaths for each 100,000 residents
Period	Warren County	Ohio	United States
2024	4.3	9.8	11.5
2015 to 2024, in a year	7.0	10.1	11.8

Note: the rate divides the deaths in the county by its residents. Persons who do not live in the county are in the deaths, not in the residents.

Population: Census Bureau estimates, vintage 2025. Warren County had 255,039 residents in 2024.

Factors that NHTSA records

Table 4.Warren County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Ohio
A driver recorded as drinkingof 156 fatal crashes	35	156 fatal crashes	22.4%	31.7%
A speeding-related driverof 156 fatal crashes	30	156 fatal crashes	19.2%	22.7%
No restraint usedof 113 occupant deaths with restraint use known	66	113 occupant deathswith restraint use known	58.4%	55.4%
Pedestriansof 167 deaths	16	167 deaths	9.6%	11.7%
Bicyclistsof 167 deaths	3	167 deaths	1.8%	1.8%
Motorcyclistsof 167 deaths	24	167 deaths	14.4%	16.3%
On a rural roadof 154 fatal crashes with the condition reported	53	154 fatal crasheswith the condition reported	34.4%	42.3%
In the darkof 156 fatal crashes with the condition reported	57	156 fatal crasheswith the condition reported	36.5%	45.0%

Note: FARS records a driver as drinking when police reported alcohol involvement or a test of the driver was positive for alcohol. It is not NHTSA's alcohol-impaired measure, which uses a blood alcohol concentration of .08 g/dL or higher. One crash can be in two or more rows. NHTSA's definitions

Note that alcohol data is often missing. For that reason, this data element may under-count the actual number of drinking drivers.

NHTSA's words. Source: NHTSA, Fatality Analysis Reporting System Analytical User's Manual, 1975-2024 (DOT HS 813 794, April 2026), copied on 2 Oct 2026.

Weekday, time and road class

Table 5.Warren County: fatal crashes by weekday and time of day, 2015 to 2024
Weekday	Midnight to 6 a.m.	6 a.m. to noon	Noon to 6 p.m.	6 p.m. to midnight	All
Sunday	4	4	11	4	23
Monday	1 or 2	4	9	7	22
Tuesday	1 or 2	8	7	5	21
Wednesday	1 or 2	9	7	7	25
Thursday	7	3	7	8	25
Friday	0	1 or 2	8	8	18
Saturday	6	3	5	8	22
All days	22	33	54	47	156

Note: a cell with a stronger shade has a larger count. The table has the fatal crashes with a known hour and weekday.

Table 6.Warren County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Ohio
Interstate	25	16.2%	11.6%
Other freeways and expressways	0	0.0%	3.4%
Other principal arterial	21	13.6%	19.5%
Minor arterial	29	18.8%	21.6%
Major collector	38	24.7%	24.5%
Minor collector	6	3.9%	4.2%
Local	35	22.7%	15.2%
Not reported	1 or 2	n/a	n/a

Note: the classes are those of the Federal Highway Administration. The shares are of the crashes with a reported class. Road function classes

Light condition and weather

Table 7.Warren County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	92
Dark, not lighted	46
Dark, lighted	11
Dawn	4
Dusk	3
Dark, lighting unknown	0
Other or unknown	0

Table 8.Warren County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	98
Cloudy	43
Rain	12
Snow, sleet or freezing rain	1 or 2
Fog, smog or smoke	1 or 2
Crosswinds or blowing sand/snow	0
Other or not reported	0

Routes in the county

Table 9.Signed routes in Warren County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Warren	In all of Ohio
Interstate 71	Interstate	11	214
Interstate 75	Interstate	13	213
State Route 28	State highway	4	27
State Route 48	State highway	9	46
State Route 73	State highway	12	56
US Route 22	US highway	10	91
US Route 42	US highway	6	90

Note: the table has each route with a page that has a fatal crash in the county, in name order. Local streets and county roads have no page. Their crashes are in the county totals. All routes in Ohio

Adjacent counties

These lists are for navigation. They are in name order.

Figure 3.Warren County on the county map of Ohio

Deaths for each 100,000 residents in a year, 2015 to 2024

Fewer than 1022 counties
10 to 14.929 counties
15 to 19.927 counties
20 to 29.99 counties
30 or more1 county
Warren County: 7.0

The limits of the classes are the same for every state. A county with few residents can show a high rate from few deaths. A class is not a judgement of a county. The full map and the table of counties of Ohio

Table 10.Counties that share a boundary line with Warren County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Butler County	Ohio	35	295	7.6
Clermont County	Ohio	19	186	8.9
Clinton County	Ohio	4	78	18.6
Greene County	Ohio	19	133	7.9
Hamilton County	Ohio	63	626	7.6
Montgomery County	Ohio	65	606	11.3

Source of the list: Census Bureau county adjacency file, 2026 edition.

Counties of similar population

These counties of Ohio have a population nearest to that of Warren County. The list is for navigation and is in name order. The number is the deaths from 2015 to 2024.

Official channels

NHTSA Fatality and Injury Reporting System Tool (FIRST)NHTSA's query tool for FARS counts.
NHTSA FARS EncyclopediaNHTSA's tables of FARS data.
Ohio Traffic Safety OfficeThe highway safety office of Ohio.

These links go to the sites of the agencies. They were checked on 2 Oct 2026.

Cite this page

Fatal Roads. Warren County, Ohio: fatal crash statistics. https://fatalroads.com/county/oh/warren/. Source: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, FARS 2024 annual file. Data to 31 Dec 2024.

The address of this page does not change.

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Source of the figures

Counts: National Highway Traffic Safety Administration, Fatality Analysis Reporting System, national files of 1975 to 2024. The factors use the vehicle and person files from 2015. Residents: Census Bureau, Population Estimates Program, vintage 2025. Map: Census Bureau cartographic boundary file, 2021 edition. Data to 31 Dec 2024. The figures are totals. No page of this site is about one crash or one person.

How the figures are made. Data sources and licences. Corrections.

Questions

How many deaths did FARS record in Warren in the ten years before 2015?

FARS records 152 deaths in Warren County from 2005 to 2014. It records 167 deaths from 2015 to 2024.

What was the rate of Warren in 2024?

The rate of Warren County in 2024 was 4.3 deaths for each 100,000 residents. The rate of Ohio was 9.8. The rate of the United States was 11.5.

How many fatal crashes in Warren had a driver recorded as drinking?

FARS records a driver as drinking in 35 of 156 fatal crashes from 2015 to 2024. This count is not NHTSA's alcohol-impaired measure. NHTSA says that alcohol data is often missing, so the count may be too low.

How many fatal crashes did FARS record on signed routes in Warren?

7 signed routes in the county have a page. FARS records 65 fatal crashes on them in the county from 2015 to 2024. The table of routes on this page gives the count for each route.