This page delivers traffic analytics for DeKalb County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for DeKalb County, Illinois among 439 road miles divided in 6,164 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 376 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.
5,246
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
9.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.2 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.
14.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
40.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$83,758
Our data indicates an estimated average traffic volume of 5,246 vehicles per day in DeKalb County, Illinois that results in 1,885,144 vehicle-miles traveled per day (≈688 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 32.2 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Illinois state averages: DeKalb's average daily traffic volume is 38% lower than the state average - 5,246 vehicles per day against 8,480 - suggesting less traffic load per road, a critical factor for logistics and site planning. Network-wide, DeKalb accounts for about 0.8% of Illinois's statewide total, at 1,885,144 vehicle-miles traveled per day (≈688 million per year). The average trip takes 32.2 minutes, 6% lower than the state level. At 30% lower than the state level, the 14.5% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. DeKalb carries more traffic than 84% of counties in Illinois. Its average travel time of 32.2 minutes is longer than 28% of counties in Illinois.
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.
6,675
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
21.4%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
56.4 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.
27.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
41.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$86,287
A significant volume of traffic in DeKalb County, Illinois utilizes the highway network. The average highway carries 6,675 vehicles per day, 27% more than the average non-highway road in the same area, which carries 5,236 vehicles per day. That average covers 42 highway road miles divided in 44 segments (average segment length 5,096 ft), together carrying 413,422 vehicle-miles traveled per day (≈151 million per year). Trucks constitute 21.4% of highway traffic.
Analytical insight
The concentration of trucks on highways (21.4%) is 23% higher than the state average for similar road classifications. This indicates DeKalb serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. DeKalb's highway truck share (21.4%) is higher than 57% of counties in Illinois. DeKalb's highway truck count is higher than 51% of counties in Illinois, at roughly 1,425 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
5,236
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
6.5%
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.
14.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
40.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$83,488
The non-highway road network in DeKalb County, Illinois supports a substantial volume of traffic. The average non-highway road carries 5,236 vehicles per day, 22% less than the average highway in the same area, which carries 6,675 vehicles per day. That average covers 396 non-highway road miles divided in 6,120 segments (average segment length 342 ft), together carrying 1,471,722 vehicle-miles traveled per day (≈537 million per year). Trucks constitute 6.5% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 70% lower than on highways. The non-highway congestion ratio of 14.4% is 30% lower than the state level, suggesting more efficient local mobility than the state average. DeKalb's overall average travel time exceeds 28% of counties in Illinois. Trip origins here have higher average income than 80% of counties in Illinois. DeKalb's median driver age is higher than 1% of counties in Illinois.
Time-of-Day & Seasonal Patterns
Analytical insight
In DeKalb County, Illinois, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
DeKalb
Illinois
Average
Difference
Traffic
5,246
8,480
-38.1%
Truck % (Total Traffic)
9.7%
10.2%
-4.3%
Truck % (Highway)
21.4%
17.3%
+23.2%
Avg. Travel Time
32.2 min
34.1 min
-5.7%
Frequently Asked Questions
The average daily traffic volume is calculated at 5,246 vehicles per day, providing a baseline for daily operations and site assessment.
The driver population in DeKalb skews older than 1% of counties in Illinois.
Approximately 47% of highway traffic and 9% of non-highway traffic consists of vehicles whose trip originates outside DeKalb County, Illinois. 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 9.7% of the total traffic mix across all road types, with a significantly higher concentration of 21.4% on highways.
Drivers on DeKalb roads have a median age of 40 years, and the median household income of the neighborhoods trips originate from averages $83,758 - useful context for retail siting and customer profiling.
The average travel time for drivers is 32.2 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 10:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 70% above the daily average.
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)
