This page delivers traffic analytics for Boulder County, Colorado. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Boulder County, Colorado among 656 road miles divided in 18,489 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 187 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
The average number of vehicles that travel each day over any road in the road network.
8,554
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.6 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
19.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
42.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$112,806
Our data indicates an estimated average traffic volume of 8,554 vehicles per day in Boulder County, Colorado that results in 5,372,037 vehicle-miles traveled per day (≈2.0 billion per year). The traffic stream is comprised of an average of 1 truck for every 20 vehicles. Typical time spent behind the wheel per trip is 33.6 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Colorado state averages: At 8,554 vehicles per day, the average monitored road in Boulder carries 27% more traffic than the state average of 6,752 vehicles per day - a critical factor for logistics and site planning. Network-wide, Boulder accounts for about 4.2% of Colorado's statewide total, at 5,372,037 vehicle-miles traveled per day (≈2.0 billion per year). The average trip takes 33.6 minutes, 1% higher than the state level. Congestion runs 25% higher than the state level, at a ratio of 19.7% - more pronounced congestion - crucial for traffic control improvement and logistics planning. Boulder carries more traffic than 95% of counties in Colorado. On travel time, Boulder runs longer than 44% of counties in Colorado.
Highway vs. Non-Highway Traffic Analysis
Highway Traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
19,564
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
36.7 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
33.3%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
43.1 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$105,938
A significant volume of traffic in Boulder County, Colorado utilizes the highway network. The average highway carries 19,564 vehicles per day, 159% more than the average non-highway road in the same area, which carries 7,559 vehicles per day. That average covers 104 highway road miles divided in 1,533 segments (average segment length 359 ft), together carrying 1,704,294 vehicle-miles traveled per day (≈622 million per year). That is more highway travel volume than 79% of counties in Colorado. Trucks constitute 6.2% of highway traffic.
Analytical insight
The concentration of trucks on highways (6.2%) is 45% lower than the state average for similar road classifications. This indicates Boulder serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. At 6.2%, Boulder's highway truck concentration is the lowest in Colorado. Boulder's highway truck count is higher than 60% of counties in Colorado, at roughly 1,219 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
7,559
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
4.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.3 min
Congestion ratio
Congestion ratio
The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.
18.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
42.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$115,832
The non-highway road network in Boulder County, Colorado supports a substantial volume of traffic. The average non-highway road carries 7,559 vehicles per day, 61% less than the average highway in the same area, which carries 19,564 vehicles per day. That average covers 552 non-highway road miles divided in 16,956 segments (average segment length 172 ft), together carrying 3,667,743 vehicle-miles traveled per day (≈1.3 billion per year). Trucks constitute 4.5% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 27% lower than the highway network. Non-highway congestion (18.4%) runs 23% higher than the state average, pointing to slower local traffic flow. Boulder's overall average travel time exceeds 44% of counties in Colorado. 92% of counties in Colorado see lower average driver income among trip origins than Boulder. 10% of counties in Colorado have a younger driver population than Boulder.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 8:00 AM–12:00 PM and PM peak 3:00 PM–6:00 PM, with volumes reaching approximately 82% higher than the daily average.
Weekend traffic:
Weekend volumes run about 19% below weekday levels.
Seasonal Fluctuation
Busy season:
July–September is the high season, with volumes +8% versus the annual average.
Lowest month:
January is the quietest month, with volumes -14% versus the annual average.
Analytical insight
In Boulder County, Colorado, the peak hour concentrates about 8% of the day's traffic, and seasonal swing is mild at +8% in high season.
Traffic Flow Profile Comparison
Metric
Boulder
Colorado
Average
Difference
Traffic
8,554
6,752
+26.7%
Truck % (Total Traffic)
5.1%
8.4%
-39.8%
Truck % (Highway)
6.2%
11.2%
-44.6%
Avg. Travel Time
33.6 min
33.2 min
+1.1%
Frequently Asked Questions
The average daily traffic volume is calculated at 8,554 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - Boulder has the lowest highway truck share of any county in Colorado, at 6.2%.
Traffic volumes are typically 8% higher during July–September. Volumes drop to their lowest levels in January, averaging 7,333 vehicles per day - a 14% decrease from the annual average.
The average travel time for drivers is 33.6 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 8:00 AM and 12:00 PM in the morning and between 3:00 PM and 6:00 PM in the evening - about 82% above the daily average.
Drivers on Boulder roads have a median age of 43 years, and the median household income of the neighborhoods trips originate from averages $112,806 - useful context for retail siting and customer profiling.
Approximately 17% of highway traffic and 12% of non-highway traffic consists of vehicles whose trip originates outside Boulder County, Colorado. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Trucks account for approximately 5.1% of the total traffic mix across all road types, with a significantly higher concentration of 6.2% on highways.
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)
