This page delivers traffic analytics for Jefferson County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Jefferson County, Illinois among 302 road miles divided in 2,940 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 543 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.
4,933
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
19.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
32.5 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.
12.4%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.5 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$64,385
Our data indicates an estimated average traffic volume of 4,933 vehicles per day in Jefferson County, Illinois that results in 1,965,530 vehicle-miles traveled per day (≈717 million per year). The traffic stream is comprised of an average of 1 truck for every 5 vehicles. Typical time spent behind the wheel per trip is 32.5 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Illinois state averages: At 4,933 vehicles per day, the average monitored road in Jefferson carries 42% 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 1,965,530 vehicle-miles traveled per day (≈717 million per year), about 0.8% of Illinois's statewide total. Journey times run 5% lower than the state level, at 32.5 minutes on average. At 40% lower than the state level, the 12.4% congestion ratio signals smoother traffic flow - crucial for traffic control improvement and logistics planning. 80% of counties in Illinois see less traffic than Jefferson's 4,933 vehicles per day. Its average travel time of 32.5 minutes is longer than 31% 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.
13,099
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
25.7%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
51.7 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.
31.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.0 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$64,577
A significant volume of traffic in Jefferson County, Illinois utilizes the highway network. The average highway carries 13,099 vehicles per day, 196% more than the average non-highway road in the same area, which carries 4,426 vehicles per day. That average covers 114 highway road miles divided in 172 segments (average segment length 3,514 ft), together carrying 1,350,083 vehicle-miles traveled per day (≈493 million per year). That is more highway travel volume than 84% of counties in Illinois. Trucks constitute 25.7% of highway traffic.
Analytical insight
The concentration of trucks on highways (25.7%) is 48% higher than the state average for similar road classifications. This indicates Jefferson serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. 69% of counties in Illinois see a lower highway truck share than Jefferson's 25.7%. Jefferson's highway truck count is higher than 73% of counties in Illinois, at roughly 3,365 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
4,426
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.
31.3 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.
11.3%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$64,301
The non-highway road network in Jefferson County, Illinois supports a substantial volume of traffic. The average non-highway road carries 4,426 vehicles per day, 66% less than the average highway in the same area, which carries 13,099 vehicles per day. That average covers 188 non-highway road miles divided in 2,768 segments (average segment length 358 ft), together carrying 615,447 vehicle-miles traveled per day (≈225 million per year). Trucks constitute 6.5% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 75% lower than the highway network. At 45% lower than the state level, the non-highway congestion ratio of 11.3% signals easier movement on local roads. Jefferson's overall average travel time exceeds 31% of counties in Illinois. Trip origins here have higher average income than 23% of counties in Illinois. 47% of counties in Illinois have a younger driver population than Jefferson.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 10:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 60% higher than the daily average.
Weekend traffic:
Weekend volumes run about 6% below weekday levels.
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +11% versus the annual average.
Lowest month:
January is the quietest month, with volumes -18% versus the annual average.
Analytical insight
In Jefferson County, Illinois, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +11% in high season.
Traffic Flow Profile Comparison
Metric
Jefferson
Illinois
Average
Difference
Traffic
4,933
8,480
-41.8%
Truck % (Total Traffic)
19.7%
10.2%
+93.3%
Truck % (Highway)
25.7%
17.3%
+48.2%
Avg. Travel Time
32.5 min
34.1 min
-4.7%
How Jefferson County compares
Jefferson County against nearby areas
Against the 4 nearest areas, Jefferson County moves 2.1 times the total daily travel and is 31.3% 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.
Jefferson County and the 4 nearest county-level areas by centroid distance, with the Illinois average for scale.
Jefferson County sits in the top quarter of the Illinois field on highway travel volume, at #14 of 82.
Where Jefferson County sits among Illinois's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
Measure
Jefferson County
Illinois rank
Traffic volume (AADT)
4,933
#21 of 102
Highway vehicle-miles per day
1,350,083
#14 of 82
Truck share on highways
25.7%
#26 of 82
Highway trucks per day
3,365
#23 of 82
Average travel time
32.5 min
#71 of 102
Average driver income
$64,385
#79 of 102
Average driver age
49.5 yrs
#55 of 102
The two ends of this table sit far apart: #14 of 82 on highway travel volume, against #79 of 102 on average driver income.
Frequently Asked Questions
The average daily traffic volume is calculated at 4,933 vehicles per day, providing a baseline for daily operations and site assessment.
Jefferson's average travel time of 32.5 minutes is longer than 31% of counties in Illinois.
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 60% above the daily average.
The average travel time for drivers is 32.5 minutes, offering a standard metric for commute and delivery route planning.
Traffic volumes are typically 11% higher during May–July. Volumes drop to their lowest levels in January, averaging 4,022 vehicles per day - a 18% decrease from the annual average.
Trucks account for approximately 19.7% of the total traffic mix across all road types, with a significantly higher concentration of 25.7% 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)
