This page delivers traffic analytics for Stephenson County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Stephenson County, Illinois among 372 road miles divided in 3,848 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 511 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.
2,979
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
8.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
33.9 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.
10.1%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
53.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$70,238
Our data indicates an estimated average traffic volume of 2,979 vehicles per day in Stephenson County, Illinois that results in 893,938 vehicle-miles traveled per day (≈326 million per year). The traffic stream is comprised of an average of 1 truck for every 12 vehicles. Typical time spent behind the wheel per trip is 33.9 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Illinois state averages: At 2,979 vehicles per day, the average monitored road in Stephenson carries 65% less traffic than the state average of 8,480 vehicles per day - a critical factor for logistics and site planning. In total volume terms, its road network carries 893,938 vehicle-miles traveled per day (≈326 million per year), about 0.4% of Illinois's statewide total. The average trip takes 33.9 minutes, on par with the state level. At 51% lower than the state level, the 10.1% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. 50% of counties in Illinois see less traffic than Stephenson's 2,979 vehicles per day. 55% of counties in Illinois have a shorter average travel time than Stephenson's 33.9 minutes.
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.
7,343
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
11.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
47.7 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.
18.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
53.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$74,006
A significant volume of traffic in Stephenson County, Illinois utilizes the highway network. The average highway carries 7,343 vehicles per day, 170% more than the average non-highway road in the same area, which carries 2,716 vehicles per day. That average covers 48 highway road miles divided in 219 segments (average segment length 1,167 ft), together carrying 285,286 vehicle-miles traveled per day (≈104 million per year). Trucks constitute 11.7% of highway traffic.
Analytical insight
At 11.7%, highway truck share is 32% lower than the state average, marking Stephenson as a primarily local traffic hub - underscoring the importance of local access for logistics operators. 12% of counties in Illinois see a lower highway truck share than Stephenson's 11.7%. By raw truck volume, Stephenson carries more highway trucks than 17% of counties in Illinois.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
2,716
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.
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.
9.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
53.3 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$69,389
The non-highway road network in Stephenson County, Illinois supports a substantial volume of traffic. The average non-highway road carries 2,716 vehicles per day, 63% less than the average highway in the same area, which carries 7,343 vehicles per day. That average covers 324 non-highway road miles divided in 3,629 segments (average segment length 471 ft), together carrying 608,652 vehicle-miles traveled per day (≈222 million per year). Trucks constitute 6.5% of non-highway traffic.
Analytical insight
The concentration of trucks on non-highway roads is 45% lower than on highways. Non-highway congestion (9.6%) runs 53% lower than the state average, pointing to smoother local traffic flow. Overall, average travel time here is longer than 55% of counties in Illinois. 46% of counties in Illinois see lower average driver income among trip origins than Stephenson. Stephenson's median driver age is higher than 95% of counties in Illinois.
Time-of-Day & Seasonal Patterns
Analytical insight
In Stephenson County, Illinois, the peak hour concentrates about 7% of the day's traffic.
Traffic Flow Profile Comparison
Metric
Stephenson
Illinois
Average
Difference
Traffic
2,979
8,480
-64.9%
Truck % (Total Traffic)
8.1%
10.2%
-20.1%
Truck % (Highway)
11.7%
17.3%
-32.5%
Avg. Travel Time
33.9 min
34.1 min
-0.8%
Frequently Asked Questions
The average daily traffic volume is calculated at 2,979 vehicles per day, providing a baseline for daily operations and site assessment.
Stephenson's highway truck share of 11.7% is higher than 12% of counties in Illinois.
Trucks account for approximately 8.1% of the total traffic mix across all road types, with a significantly higher concentration of 11.7% on highways.
Drivers on Stephenson roads have a median age of 53 years, and the median household income of the neighborhoods trips originate from averages $70,238 - useful context for retail siting and customer profiling.
Approximately 27% of highway traffic and 6% of non-highway traffic consists of vehicles whose trip originates outside Stephenson 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.
The average travel time for drivers is 33.9 minutes, offering a standard metric for commute and delivery route planning.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 3:00 PM and 6:00 PM in the evening - about 76% 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)
