Adams County, Colorado: fatal crash statistics

Counties of Colorado by year (CSV)Cite this page

FARS records 84 deaths in 79 fatal crashes in Adams County in 2024.

FARS records 635 deaths in 591 fatal crashes in the county from 2015 to 2024.

From 2015 to 2024 the rate is 12.3 deaths for each 100,000 residents in a year.

The rate of Colorado in the same years is 11.4.

By deaths from 2015 to 2024, Adams County was number 2 of 64 counties of Colorado.

Deaths in Adams County rose by 85.7% between the ten years 2005 to 2014 (342) and the ten years 2015 to 2024 (635).

In the counties of Colorado the deaths rose by 29.1% between the same years.

From 2015 to 2024, 7.1% of the fatal crashes in Adams County with a known setting were rural, against 39.1% in Colorado.

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 Adams 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.Adams County: deaths and fatal crashes by year, 2015 to 2024
Year	Deaths	Fatal crashes	Crashes with a driver recorded as drinking
2024	84	79	28
2023	64	61	29
2022	81	73	32
2021	65	60	21
2020	53	48	16
2019	69	63	26
2018	51	49	14
2017	64	60	23
2016	60	58	16
2015	44	40	9
2015 to 2024	635	591	214

Each year from 1975

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

Tallest column: 84 (2024)2024: 84

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

Table 2.Adams County: deaths and fatal crashes by year, 1975 to 2024
Year	Deaths	Fatal crashes
2024	84	79
2023	64	61
2022	81	73
2021	65	60
2020	53	48
2019	69	63
2018	51	49
2017	64	60
2016	60	58
2015	44	40
2014	32	32
2013	33	32
2012	27	23
2011	29	25
2010	29	27
2009	22	22
2008	39	34
2007	39	38
2006	38	36
2005	54	48
2004	48	43
2003	39	35
2002	54	45
2001	50	44
2000	49	40
1999	35	34
1998	43	41
1997	44	41
1996	28	27
1995	55	47
1994	48	41
1993	37	35
1992	44	41
1991	32	28
1990	32	27
1989	32	30
1988	33	26
1987	37	36
1986	30	29
1985	33	32
1984	55	46
1983	54	50
1982	36	30
1981	34	34
1980	56	47
1979	43	40
1978	41	31
1977	31	28
1976	44	36
1975	42	36

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.Adams County beside Colorado and the United States: deaths for each 100,000 residents
Period	Adams County	Colorado	United States
2024	15.3	11.5	11.5
2015 to 2024, in a year	12.3	11.4	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. Adams County had 549,257 residents in 2024.

Factors that NHTSA records

Table 4.Adams County: counts by recorded factor, 2015 to 2024
Factor	Count	Counted among	Share	Share in Colorado
A driver recorded as drinkingof 591 fatal crashes	214	591 fatal crashes	36.2%	34.1%
A speeding-related driverof 591 fatal crashes	209	591 fatal crashes	35.4%	35.4%
No restraint usedof 333 occupant deaths with restraint use known	188	333 occupant deathswith restraint use known	56.5%	54.5%
Pedestriansof 635 deaths	144	635 deaths	22.7%	14.1%
Bicyclistsof 635 deaths	14	635 deaths	2.2%	2.5%
Motorcyclistsof 635 deaths	118	635 deaths	18.6%	19.4%
On a rural roadof 591 fatal crashes with the condition reported	42	591 fatal crasheswith the condition reported	7.1%	39.1%
In the darkof 591 fatal crashes with the condition reported	350	591 fatal crasheswith the condition reported	59.2%	45.1%

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.Adams 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	30	12	10	38	90
Monday	21	8	13	20	62
Tuesday	17	22	12	27	78
Wednesday	14	9	27	23	73
Thursday	17	12	15	17	61
Friday	21	12	23	54	110
Saturday	37	17	30	33	117
All days	157	92	130	212	591

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.Adams County: fatal crashes by road function class, 2015 to 2024
Road function class	Fatal crashes	Share	Share in Colorado
Interstate	126	21.4%	14.9%
Other freeways and expressways	29	4.9%	4.6%
Other principal arterial	207	35.1%	39.3%
Minor arterial	95	16.1%	19.3%
Major collector	64	10.8%	10.2%
Minor collector	1 or 2	0.3%	2.8%
Local	67	11.4%	8.9%
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.Adams County: fatal crashes by light condition, 2015 to 2024
Light condition	Fatal crashes
Daylight	219
Dark, not lighted	103
Dark, lighted	247
Dawn	12
Dusk	10
Dark, lighting unknown	0
Other or unknown	0

Table 8.Adams County: fatal crashes by weather, 2015 to 2024
Weather	Fatal crashes
Clear	318
Cloudy	21
Rain	11
Snow, sleet or freezing rain	6
Fog, smog or smoke	1 or 2
Crosswinds or blowing sand/snow	1 or 2
Other or not reported	233

Routes in the county

Table 9.Signed routes in Adams County that have a page: fatal crashes, 2015 to 2024
Route	Type	In Adams	In all of Colorado
Interstate 25	Interstate	39	382
Interstate 70	Interstate	27	313
Interstate 76	Interstate	43	130
Interstate 225	Interstate	1 or 2	31
State Route 2	State highway	1 or 2	30
State Route 95	State highway	10	49
State Route 470	State highway	11	41
US Route 6	US highway	10	109
US Route 36	US highway	7	56
US Route 40	US highway	17	176
US Route 85	US highway	23	146
US Route 287	US highway	45	177

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 Colorado

Adjacent counties

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

Figure 3.Adams County on the county map of Colorado

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

Fewer than 108 counties
10 to 14.99 counties
15 to 19.917 counties
20 to 29.912 counties
30 or more18 counties
Adams County: 12.3

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 Colorado

Table 10.Counties that share a boundary line with Adams County
County	State	Deaths, 2024	Deaths, 2015 to 2024	For each 100,000 residents in a year
Arapahoe County	Colorado	55	501	7.7
Broomfield County	Colorado	4	35	4.9
Denver County	Colorado	63	608	8.5
Jefferson County	Colorado	54	478	8.3
Morgan County	Colorado	10	78	26.9
Washington County	Colorado	1 or 2	34	70.3
Weld County	Colorado	67	569	17.3

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

Counties of similar population

These counties of Colorado have a population nearest to that of Adams 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.
Colorado Office of Transportation SafetyThe highway safety office of Colorado.

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

Cite this page

Fatal Roads. Adams County, Colorado: fatal crash statistics. https://fatalroads.com/county/co/adams/. 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 Adams in the ten years before 2015?

FARS records 342 deaths in Adams County from 2005 to 2014. It records 635 deaths from 2015 to 2024.

What was the rate of Adams in 2024?

The rate of Adams County in 2024 was 15.3 deaths for each 100,000 residents. The rate of Colorado was 11.5. The rate of the United States was 11.5.

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

FARS records a driver as drinking in 214 of 591 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 Adams?

12 signed routes in the county have a page. FARS records 236 fatal crashes on them in the county from 2015 to 2024. The table of routes on this page gives the count for each route.