This page delivers traffic analytics for Dubuque County, Iowa. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Dubuque County, Iowa among 613 road miles divided in 7,418 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 436 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.
3,791
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
9.5%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.1 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.
14.8%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.9 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$87,710
Our data indicates an estimated average traffic volume of 3,791 vehicles per day in Dubuque County, Iowa that results in 1,911,046 vehicle-miles traveled per day (≈698 million per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 32.1 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Iowa state averages: Dubuque's average daily traffic volume is 25% higher than the state average - 3,791 vehicles per day against 3,042 - suggesting more traffic load per road, a critical factor for logistics and site planning. Across the whole network that adds up to 1,911,046 vehicle-miles traveled per day (≈698 million per year), roughly 2.3% of Iowa's statewide total. The average trip takes 32.1 minutes, 3% lower than the state level. Congestion runs 29% higher than the state level, at a ratio of 14.8% - more pronounced congestion - crucial for traffic control improvement and logistics planning. 92% of counties in Iowa see less traffic than Dubuque's 3,791 vehicles per day. Its average travel time of 32.1 minutes is longer than 27% of counties in Iowa.
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.
6,768
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
12.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.0 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.
16.1%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$88,750
A significant volume of traffic in Dubuque County, Iowa utilizes the highway network. The average highway carries 6,768 vehicles per day, 90% more than the average non-highway road in the same area, which carries 3,556 vehicles per day. That average covers 151 highway road miles divided in 543 segments (average segment length 1,469 ft), together carrying 973,582 vehicle-miles traveled per day (≈355 million per year). That is more highway travel volume than 87% of counties in Iowa. Trucks constitute 12.2% of highway traffic.
Analytical insight
The concentration of trucks on highways (12.2%) is 25% lower than the state average for similar road classifications. This indicates Dubuque serves as a primarily local traffic hub. For logistics operators, this validates the importance of local access. 22% of counties in Iowa see a lower highway truck share than Dubuque's 12.2%. By raw truck volume, Dubuque carries more highway trucks than 54% of counties in Iowa.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
3,556
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.8%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.0 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.
14.7%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$86,862
The non-highway road network in Dubuque County, Iowa supports a substantial volume of traffic. The average non-highway road carries 3,556 vehicles per day, 47% less than the average highway in the same area, which carries 6,768 vehicles per day. That average covers 462 non-highway road miles divided in 6,875 segments (average segment length 355 ft), together carrying 937,463 vehicle-miles traveled per day (≈342 million per year). Trucks constitute 6.8% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 44% lower than the highway network. At 32% higher than the state level, the non-highway congestion ratio of 14.7% signals more friction on local roads. Overall, average travel time here is longer than 27% of counties in Iowa. Dubuque's average driver income exceeds 92% of counties in Iowa. The driver population here skews older than 26% of counties in Iowa.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 65% higher than the daily average.
Weekend traffic:
Weekend volumes run about 26% below weekday levels.
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +8% versus the annual average.
Lowest month:
February is the quietest month, with volumes -16% versus the annual average.
Analytical insight
In Dubuque County, Iowa, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +8% in high season.
Traffic Flow Profile Comparison
Metric
Dubuque
Iowa
Average
Difference
Traffic
3,791
3,042
+24.6%
Truck % (Total Traffic)
9.5%
11.0%
-13.4%
Truck % (Highway)
12.2%
16.1%
-24.5%
Avg. Travel Time
32.1 min
33.0 min
-2.8%
Frequently Asked Questions
The average daily traffic volume is calculated at 3,791 vehicles per day, providing a baseline for daily operations and site assessment.
Dubuque's highway truck share of 12.2% is higher than 22% of counties in Iowa.
Approximately 17% of highway traffic and 5% of non-highway traffic consists of vehicles whose trip originates outside Dubuque County, Iowa. This indicates that a portion of highway traffic is regional pass-through, while local roads are more representative of resident and commuter activity.
Weekday peaks occur between 7:00 AM and 8:00 AM in the morning and between 3:00 PM and 7:00 PM in the evening - about 65% above the daily average.
The average travel time for drivers is 32.1 minutes, offering a standard metric for commute and delivery route planning.
Traffic volumes are typically 8% higher during May–July. Volumes drop to their lowest levels in February, averaging 3,202 vehicles per day - a 16% decrease from the annual average.
Trucks account for approximately 9.5% of the total traffic mix across all road types, with a significantly higher concentration of 12.2% 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)
