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Boulder County, Colorado

Car Accidents in Longmont, Colorado

Longmont has 4,315 reported crashes, 1,459 injuries, and 11 fatalitiesin the current CrashStory dataset. Use this page to identify dangerous roads, recent crashes, and trend changes across the city.

Source: Colorado crash data (CDOT)
Last updated: November 18, 2025

Coverage shown for Longmont, Boulder County.

Recent Crashes

Most Dangerous Roads in Longmont

1

Main Street

Main Street
707
crashes
1 fatalities
268 injuries
See Main Street car accident data
2

Ken Pratt Boulevard

Ken Pratt Boulevard
549
crashes
3

Hover Street

Hover Street
407
crashes
3 fatalities
166 injuries
See Hover Street car accident data
4

9th Avenue

9th Avenue
170
crashes
0 fatalities
61 injuries
See 9th Avenue car accident data
5

17th Avenue

17th Avenue
149
crashes
1 fatalities
74 injuries
See 17th Avenue car accident data
6

3rd Avenue

3rd Avenue
113
crashes
1 fatalities
29 injuries
See 3rd Avenue car accident data
7

Nelson Road

Nelson Road
96
crashes
0 fatalities
36 injuries
See Nelson Road car accident data
8

Mountain View Avenue

Mountain View Avenue
72
crashes
9

US Highway 287

US Highway 287
70
crashes
10

21st Avenue

21st Avenue
65
crashes
0 fatalities
20 injuries
See 21st Avenue car accident data

Crash Statistics for Longmont

Coverage window: Jan 1, 2023 - Nov 18, 2025

4,315
Total Crashes
11
Fatalities
1,459
Injuries
REAR_END
Most Common Type

Crash Totals by Year

Data coverage: Jan 1, 2023 - Nov 18, 2025

YearTotal CrashesFatalitiesInjuriesMost Common Type
20251,4482456Motor Vehicle Crash
20241,8465636Rear-End Collision
20231,0214367Rear-End Collision

Yearly rows are shown to make trend direction and recency explicit for Longmont.

Longmont Crash Trend

Reported incidents over time

Trend data is currently unavailable for city: longmont.

Today's Accidents in Longmont

Check the latest car accident reports in Longmont, Boulder County, Colorado. Data is updated regularly from Colorado crash records.

View Today's Accidents Statewide

Yesterday's Accidents in Longmont

Review yesterday's car accident reports for Longmont and surrounding areas.

View Yesterday's Accidents

Crashes by Type

REAR_END1,239 (28.7%)
NOT_APPLICABLE1,192 (27.6%)
BROADSIDE734 (17.0%)
PARKED_VEHICLE505 (11.7%)
SIDESWIPE_SAME413 (9.6%)
BICYCLE88 (2.0%)
PEDESTRIAN61 (1.4%)
SIDESWIPE_OPPOSITE34 (0.8%)

Monthly Crash Trends

Coverage window: Jan 1, 2023 - Nov 18, 2025

434 crashes
Jan
392 crashes
Feb
341 crashes
Mar
397 crashes
Apr
479 crashes
May
458 crashes
Jun
388 crashes
Jul
273 crashes
Aug
309 crashes
Sep
308 crashes
Oct
243 crashes
Nov
293 crashes
Dec
Average: 360 crashes per month

Frequently Asked Questions

Longmont experiences approximately 4,315 car accidents annually. While this may seem high, it's important to consider the city's population and traffic volume when assessing road safety.

Find a Lawyer in Longmont

View All Personal Injury Lawyers in Longmont

Major Highways Through Longmont

Explore crash data along the highways and interstates that pass through or near Longmont.

Other Types of Accidents in Longmont

Explore data on different accident categories reported in the Longmont area.

Other Cities in Boulder County

Top Lawyers in Longmont