This page delivers traffic analytics for McHenry County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for McHenry County, Illinois among 628 road miles divided in 14,606 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 227 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.
9,188
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.
34.3 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.
24.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$110,532
Our data indicates an estimated average traffic volume of 9,188 vehicles per day in McHenry County, Illinois that results in 5,331,104 vehicle-miles traveled per day (≈1.9 billion per year). The traffic stream is comprised of an average of 1 truck for every 15 vehicles. Typical time spent behind the wheel per trip is 34.3 minutes, which already accounts for delays at signals, intersections, and congestion.
Analytical insight
When compared to the Illinois state averages: At 9,188 vehicles per day, the average monitored road in McHenry carries 8% more 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 5,331,104 vehicle-miles traveled per day (≈1.9 billion per year), about 2.2% of Illinois's statewide total. Journey times here (34.3 minutes on average) closely track the state level. At 16% higher than the state level, the 24.0% congestion ratio signals more pronounced congestion - crucial for traffic control improvement and logistics planning. By volume, McHenry's 9,188 vehicles per day outpaces 95% of counties in Illinois. On travel time, McHenry runs longer than 67% 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.
19,609
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
20.0%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
50.6 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.
31.6%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
48.6 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$96,448
A significant volume of traffic in McHenry County, Illinois utilizes the highway network. The average highway carries 19,609 vehicles per day, 114% more than the average non-highway road in the same area, which carries 9,176 vehicles per day. That average covers 24 highway road miles divided in 17 segments (average segment length 7,317 ft), together carrying 578,552 vehicle-miles traveled per day (≈211 million per year). By highway travel volume, McHenry outranks 53% of counties in Illinois. Trucks constitute 20.0% of highway traffic.
Analytical insight
The concentration of trucks on highways (20.0%) is 15% higher than the state average for similar road classifications. This indicates McHenry serves as a significant freight corridor. For logistics operators, this validates the importance of highway access. McHenry's highway truck share (20.0%) is higher than 48% of counties in Illinois. By raw volume, McHenry carries the highest number of highway trucks in Illinois - roughly 4,909 trucks per day.
Non-highway traffic
Traffic
Traffic
The average number of vehicles that travel each day over any road in the road network.
9,176
Trucks
Trucks
The percentage of the total traffic volume composed of heavy vehicles.
5.2%
Average travel time
Average travel time
The average time of travel averaged among all vehicles traveling on the road network.
34.3 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.
24.0%
Drivers’ average age
Drivers’ average age
Average age of residents in the geographic areas where the vehicle trips originated.
47.7 yrs
Drivers’ average income
Drivers’ average income
Average income of residents in the geographic areas where the vehicle trips originated.
$111,123
The non-highway road network in McHenry County, Illinois supports a substantial volume of traffic. The average non-highway road carries 9,176 vehicles per day, 53% less than the average highway in the same area, which carries 19,609 vehicles per day. That average covers 604 non-highway road miles divided in 14,589 segments (average segment length 219 ft), together carrying 4,752,552 vehicle-miles traveled per day (≈1.7 billion per year). Trucks constitute 5.2% of non-highway traffic.
Analytical insight
Non-highway roads carry a truck concentration that's 74% lower than the highway network. The non-highway congestion ratio of 24.0% is 16% higher than the state level, suggesting slower local mobility than the state average. Overall, average travel time here is longer than 67% of counties in Illinois. Trip origins here have higher average income than 95% of counties in Illinois. The driver population here skews older than 26% of counties in Illinois.
Time-of-Day & Seasonal Patterns
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–12:00 PM and PM peak 3:00 PM–7:00 PM, with volumes reaching approximately 79% higher than the daily average.
Weekend traffic:
Weekend volumes run about 17% below weekday levels.
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +7% versus the annual average.
Lowest month:
March is the quietest month, with volumes -11% versus the annual average.
Analytical insight
In McHenry County, Illinois, the peak hour concentrates about 7% of the day's traffic, and seasonal swing is mild at +7% in high season.
Traffic Flow Profile Comparison
Metric
McHenry
Illinois
Average
Difference
Traffic
9,188
8,480
+8.4%
Truck % (Total Traffic)
6.8%
10.2%
-33.5%
Truck % (Highway)
20.0%
17.3%
+15.3%
Avg. Travel Time
34.3 min
34.1 min
+0.6%
Frequently Asked Questions
The average daily traffic volume is calculated at 9,188 vehicles per day, providing a baseline for daily operations and site assessment.
Yes - McHenry carries the highest raw volume of highway trucks of any county in Illinois, at roughly 4,909 trucks per day.
Weekday peaks occur between 7:00 AM and 12:00 PM in the morning and between 3:00 PM and 7:00 PM in the evening - about 79% above the daily average.
Approximately 86% of highway traffic and 12% of non-highway traffic consists of vehicles whose trip originates outside McHenry 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.
Traffic volumes are typically 7% higher during June–August. Volumes drop to their lowest levels in March, averaging 8,149 vehicles per day - a 11% decrease from the annual average.
Drivers on McHenry roads have a median age of 48 years, and the median household income of the neighborhoods trips originate from averages $110,532 - useful context for retail siting and customer profiling.
Trucks account for approximately 6.8% of the total traffic mix across all road types, with a significantly higher concentration of 20.0% 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)
