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Traffic heat map of Adams County, Colorado: 1,031 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 225 and Valley Highway

Adams County, Colorado Traffic Counts

Our Adams County, Colorado traffic data covers 24,110 road segments over 1,031 road miles, with an average segment of just 226 ft. It ranks among the top 3 counties in Colorado for average daily traffic. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Adams County, Colorado

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day9,165
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

8.0%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

32.3 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

18.5%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

41.0 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$109,843

A typical monitored road in Adams County, Colorado sees 9,165 vehicles per day, while its 1,031 miles of monitored roads together handle 10,849,636 vehicle-miles traveled per day (≈4.0 billion per year). Trucks are 8.0% of traffic, close to the 8.4% across Colorado.

Busier roads than 98% of counties in Colorado

At 9,165 vehicles per day, the average monitored road in Adams carries 36% more traffic than the state average of 6,752, suggesting more demand on each road - more exposure for roadside businesses, and more competition for road space. In total volume terms, its road network carries about 8.5% of Colorado's statewide total of vehicle-miles. By volume, Adams's 9,165 vehicles per day outpaces 98% of counties in Colorado.

At 32.3 minutes, the average travel time matches the state level closely. On travel time, Adams runs shorter than 63% of counties in Colorado.

The congestion ratio of 18.5% is 18% higher, pointing to more pronounced congestion than the state level - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Adams County, Colorado

Trafficvehicles per day28,085
Trucks11.0%
Average travel time38.1 min
Congestion ratio50.0%
Drivers’ average age40.9 yrs
Drivers’ average income$110,211

Highways carry about half of all travel in Adams County, Colorado, 48% of vehicle-miles. The average highway carries 28,085 vehicles per day, 234% more than the average non-highway road in the same area, which carries 8,411 vehicles per day.

With 21% of the road miles (216 miles in 924 segments), highways punch above their length, carrying 5,238,118 vehicle-miles traveled per day (≈1.9 billion per year).

No more than 2 other counties in Colorado move more traffic on their highways.

More highway trucks than 96% of counties in Colorado

Highway truck concentration here (11.0%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for Colorado: neither freight- nor commuter-dominated.

Adams's highway truck share (11.0%) is lower than 53% of counties in Colorado. By raw truck volume, Adams carries more highway trucks than 96% of counties in Colorado.

non-highway traffic icon

Non-highway Traffic in Adams County, Colorado

Trafficvehicles per day8,411
Trucks5.1%
Average travel time32.0 min
Congestion ratio17.2%
Drivers’ average age41.1 yrs
Drivers’ average income$109,634

Local roads carry about half of all travel in Adams County, Colorado, 52% of vehicle-miles. The average non-highway road carries 8,411 vehicles per day.

Local roads make up 79% of the monitored road miles (815 miles in 23,186 segments) but carry less than their share of travel: 5,611,518 vehicle-miles traveled per day (≈2.0 billion per year). About 1 in 20 vehicles on non-highway roads is a truck (5.1%).

Younger drivers than 97% of counties in Colorado

Compared to highways, non-highway routes see 54% fewer trucks by share.

Non-highway congestion (17.2%) runs slightly higher than the state level (15% higher).

Adams's average driver income is higher than 87% of counties in Colorado. Adams's median driver age is lower than 97% of counties in Colorado.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
A long morning plateau from 7:00 AM to 12:00 PM and PM peak 4:00 PM–6:00 PM, with volumes reaching approximately 85% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 14% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +5% versus the annual average.
Lowest month:
January is the quietest month, with volumes -12% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Adams County, Colorado, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +5% in high season.

Adams County vs. Colorado Traffic Comparison

The average daily traffic per road sets Adams County apart: 36% above the Colorado average.

MetricAdams CountyColorado averageDifference
Traffic9,1656,752+35.7%
Truck % (Total Traffic)8.0%8.4%-5.4%
Truck % (Highway)11.0%11.2%-2.0%
Avg. Travel Time32.3 min33.2 min-2.8%

How Adams County compares

Adams County against nearby counties

Compared with its 4 closest neighbours, Adams County carries 53.6% more traffic on a typical road and is 37.1% more congested; it has the second busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Adams County and the 4 nearest county-level areas by centroid distance, with the Colorado average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Adams County9,1658.0%10,849,63632.3 min18.5%
Arapahoe County, Colorado8,7426.7%10,827,70232.7 min16.2%
Morgan County, Colorado2,64416.6%1,106,77433.6 min8.2%
Elbert County, Colorado2,96418.1%805,94229.2 min9.9%
Denver County, Colorado9,5126.3%13,746,46834.5 min19.7%
Colorado average6,7528.4%N/A33.2 min15.7%

Adams County ranked within Colorado

Adams County sits in Colorado's top three on average daily traffic volume, highway travel volume and highway truck volume.

Adams County ranked among 64 county-level areas in Colorado (1 = highest); measures without data in every county rank a smaller field, down to 54.
MeasureAdams CountyColorado rank
Traffic volume (AADT)9,165#2 of 64
Highway vehicle-miles per day5,238,118#3 of 54
Truck share on highways11.0%#29 of 54
Highway trucks per day3,095#3 of 54
Average travel time32.3 min#41 of 64
Average driver income$109,843#9 of 64
Average driver age41.0 yrs#62 of 64

Adams County ranks #2 of 64 on average daily traffic volume but #62 of 64 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Adams County, Colorado

On their busiest stretches, the three busiest roads in Adams County carry 113,804 vehicles a day on average, 12.4 times the typical road in the county (9,165).

I 225 is the busiest road, at 141,978 vehicles a day, 11,867 of them trucks (8.4%). It tops the truck ranking too, with the most trucks.

Freight stands out on Heartland Expressway: trucks are 13.6% of the traffic there, against 8.0% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 225Motorway · 141,978vehicles11,867trucks · 8.4%
Road class
Motorway
Congestion ratio
100.2%
Median trip time
38.1 min
Drivers’ median age
40.9 yrs
Drivers’ average income
$100,597

I 225 is one of the more congested roads here: trips take 100% longer than at free-flow speed, against 18% county-wide.

2Valley HighwayMotorway · 110,766vehicles8,681trucks · 7.8%
Road class
Motorway
Congestion ratio
70.2%
Median trip time
38.5 min
Drivers’ median age
41.0 yrs
Drivers’ average income
$111,555

A main artery: Valley Highway's busiest stretch carries 12.1 times the county average; trucks are 7.8% of it, in line with the county-wide 8.0%.

3Dwight D. Eisenhower HighwayMotorway · 88,667vehicles10,242trucks · 11.6%
Road class
Motorway
Congestion ratio
104.5%
Median trip time
38.6 min
Drivers’ median age
40.3 yrs
Drivers’ average income
$100,823

Delays build on Dwight D. Eisenhower Highway: its congestion ratio of 104% over free-flow time is well above the county's 18%.

4Denver-Boulder TurnpikeMotorway · 84,589vehicles5,257trucks · 6.2%
Road class
Motorway
Congestion ratio
68.9%
Median trip time
33.4 min
Drivers’ median age
40.2 yrs
Drivers’ average income
$104,626

Denver-Boulder Turnpike is a trunk route for the county, carrying 9.2 times the county average on its busiest stretch; trucks are 6.2% of it, below the county-wide 8.0%.

5Peña BoulevardMotorway · 64,596vehicles8,212trucks · 12.7%
Road class
Motorway
Congestion ratio
67.9%
Median trip time
37.4 min
Drivers’ median age
39.7 yrs
Drivers’ average income
$114,044

Peña Boulevard carries 7.0 times the county average at its busiest, 8,212 of them trucks (12.7%, above the county-wide 8.0%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 225Motorway · #1 by traffic141,978vehicles11,867trucks · 8.4%
2Dwight D. Eisenhower HighwayMotorway · #3 by traffic88,667vehicles10,242trucks · 11.6%
3Valley HighwayMotorway · #2 by traffic110,766vehicles8,681trucks · 7.8%
4Peña BoulevardMotorway · #5 by traffic64,596vehicles8,212trucks · 12.7%
5Heartland ExpresswayMotorway · 48,602vehicles6,605trucks · 13.6%
Road class
Motorway
Congestion ratio
58.7%
Median trip time
38.5 min
Drivers’ median age
41.5 yrs
Drivers’ average income
$109,612

Heartland Expressway carries 5.3 times the county average on its busiest stretch, where the median trip lasts 38.5 minutes.

How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

AdamsDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Adams County

The same traffic breakdown for the areas closest to Adams County, Colorado.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.