This page delivers traffic analytics for LaSalle County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for LaSalle County, Illinois among 886 road miles divided in 9,136 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 512 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.
3,388
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
17.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.8 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.
11.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$78,703
Our data indicates an estimated average traffic volume of 3,388 vehicles per day in LaSalle County, Illinois that results in 3,463,088 vehicle-miles traveled per day (≈1.3 billion per year). The traffic stream is comprised of an average of 1 truck for every 6 vehicles. Typical time spent behind the wheel per trip is 31.8 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Illinois state averages: At 3,388 vehicles per day, the average monitored road in LaSalle carries 60% less traffic than the state average of 8,480 vehicles per day - a critical factor for logistics and site planning. Across the whole network that adds up to 3,463,088 vehicle-miles traveled per day (≈1.3 billion per year), roughly 1.5% of Illinois's statewide total. At 31.8 minutes, the average travel time is 7% lower than the state level. The congestion ratio of 11.0% is 47% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning. LaSalle carries more traffic than 62% of counties in Illinois. 20% of counties in Illinois have a shorter average travel time than LaSalle's 31.8 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.
11,820
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
26.9%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
55.6 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.
28.2%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.4 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$84,128
A significant volume of traffic in LaSalle County, Illinois utilizes the highway network. The average highway carries 11,820 vehicles per day, 271% more than the average non-highway road in the same area, which carries 3,187 vehicles per day. That average covers 139 highway road miles divided in 213 segments (average segment length 3,457 ft), together carrying 1,740,579 vehicle-miles traveled per day (≈635 million per year). 88% of counties in Illinois move less traffic on their highways. Trucks constitute 26.9% of highway traffic.
Analytical insight
The concentration of trucks on highways (26.9%) is 56% higher than the state average for similar road classifications. This indicates LaSalle serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. LaSalle's highway truck share (26.9%) is higher than 80% of counties in Illinois. By raw truck volume, LaSalle carries more highway trucks than 80% 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.
3,187
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
7.1%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
31.2 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.
10.5%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
49.8 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$77,304
The non-highway road network in LaSalle County, Illinois supports a substantial volume of traffic. The average non-highway road carries 3,187 vehicles per day, 73% less than the average highway in the same area, which carries 11,820 vehicles per day. That average covers 747 non-highway road miles divided in 8,923 segments (average segment length 442 ft), together carrying 1,722,510 vehicle-miles traveled per day (≈629 million per year). Trucks constitute 7.1% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 74% lower than the highway network. Non-highway congestion (10.5%) runs 49% lower than the state average, pointing to smoother local traffic flow. Overall, average travel time here is longer than 20% of counties in Illinois. Trip origins here have higher average income than 71% of counties in Illinois. 58% of counties in Illinois have a younger driver population than LaSalle.
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 68% higher than the daily average.
Weekend traffic:
Weekend volumes run about 10% below weekday levels.
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +13% versus the annual average.
Lowest month:
January is the quietest month, with volumes -20% versus the annual average.
Analytical insight
In LaSalle County, Illinois, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is pronounced at +13% in high season.
Traffic Flow Profile Comparison
Metric
LaSalle
Illinois
Average
Difference
Traffic
3,388
8,480
-60.0%
Truck % (Total Traffic)
17.1%
10.2%
+67.7%
Truck % (Highway)
26.9%
17.3%
+55.5%
Avg. Travel Time
31.8 min
34.1 min
-6.9%
Frequently Asked Questions
The average daily traffic volume is calculated at 3,388 vehicles per day, providing a baseline for daily operations and site assessment.
LaSalle's highway truck share of 26.9% is higher than 80% of counties in Illinois.
Traffic volumes are typically 13% higher during June–August. Volumes drop to their lowest levels in January, averaging 2,726 vehicles per day - a 20% decrease from the annual average.
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 68% above the daily average.
Trucks account for approximately 17.1% of the total traffic mix across all road types, with a significantly higher concentration of 26.9% on highways.
Approximately 34% of highway traffic and 8% of non-highway traffic consists of vehicles whose trip originates outside LaSalle 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 31.8 minutes, offering a standard metric for commute and delivery route planning.
Drivers on LaSalle roads have a median age of 50 years, and the median household income of the neighborhoods trips originate from averages $78,703 - useful context for retail siting and customer profiling.
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)
