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Traffic heat map of Scott County, Illinois: 109 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 72 and United States Route 67

Scott County, Illinois Traffic Counts

About 1 in 5 vehicles here is a truck, against 1 in 10 across Illinois. This page breaks down traffic in Scott County, Illinois across 109 miles of monitored roads split into 563 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Scott County, Illinois

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day1,588
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

18.4%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

34.9 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

4.7%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

49.5 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$67,431

A typical monitored road in Scott County, Illinois sees 1,588 vehicles per day, while its 109 miles of monitored roads together handle 270,825 vehicle-miles traveled per day (≈98.9 million per year). About 1 in 5 vehicles is a truck, well above the 10.2% across Illinois - a freight-heavy mix.

Quieter roads than 93% of counties in Illinois

Scott's average daily traffic volume is 81% lower than the state average - 1,588 vehicles per day against 8,480 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries about 0.1% of Illinois's statewide total of vehicle-miles. By volume, Scott's 1,588 vehicles per day trails 93% of counties in Illinois.

At 34.9 minutes, the average travel time matches the state level closely. 69% of counties in Illinois have a shorter average travel time than Scott's 34.9 minutes.

At 77% lower than the state level, the 4.7% congestion ratio signals smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Scott County, Illinois

Trafficvehicles per day3,678
Trucks22.0%
Average travel time56.0 min
Congestion ratio8.4%
Drivers’ average age49.2 yrs
Drivers’ average income$65,943

Most travel in Scott County, Illinois happens on highways, 71% of all vehicle-miles. The average highway carries 3,678 vehicles per day, 181% more than the average non-highway road in the same area, which carries 1,310 vehicles per day.

With 42% of the road miles (46 miles in 66 segments), highways punch above their length, carrying 193,064 vehicle-miles traveled per day (≈70.5 million per year).

Fewer highway trucks than 73% of counties in Illinois

The concentration of trucks on highways (22.0%) is 27% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

Scott's highway truck share (22.0%) is higher than 58% of counties in Illinois. By raw truck volume, Scott carries fewer highway trucks than 73% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in Scott County, Illinois

Trafficvehicles per day1,310
Trucks9.6%
Average travel time32.1 min
Congestion ratio4.2%
Drivers’ average age49.9 yrs
Drivers’ average income$68,514

At 29% of vehicle-miles, local roads carry a smaller share of the traffic in Scott County, Illinois than highways. The average non-highway road carries 1,310 vehicles per day.

Spread over 63 miles and 497 segments, 58% of the road network, local roads carry a lighter load per mile: 77,761 vehicle-miles traveled per day (≈28.4 million per year). Trucks make up 9.6% of non-highway traffic, about 1 in 10 vehicles.

Local congestion 80% below the Illinois average

The concentration of trucks on non-highway roads is 56% lower than on highways.

At 80% lower than the state level, the non-highway congestion ratio of 4.2% signals easier movement on local roads.

Scott's average driver income is lower than 63% of counties in Illinois. The driver population here skews younger than 51% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Scott County, Illinois, the peak hour concentrates about 7% of the day's traffic.

Scott County vs. Illinois Traffic Comparison

The average daily traffic per road sets Scott County apart: 81% below the Illinois average. Its truck share, by contrast, is 81% above.

MetricScott CountyIllinois averageDifference
Traffic1,5888,480-81.3%
Truck % (Total Traffic)18.4%10.2%+81.1%
Truck % (Highway)22.0%17.3%+26.9%
Avg. Travel Time34.9 min34.1 min+2.2%

How Scott County compares

Scott County is the least congested of its nearby counties

Compared with its 4 closest neighbours, Scott County is 42.5% less congested and carries 37.0% less traffic on a typical road; it has the quietest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

Scott County and the 4 nearest county-level areas by centroid distance, with the Illinois average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Scott County1,58818.4%270,82534.9 min4.7%
Morgan County, Illinois3,91211.8%864,71833.4 min10.7%
Greene County, Illinois2,31811.4%229,16835.1 min7.4%
Pike County, Illinois1,88213.7%733,21034.6 min6.9%
Brown County, Illinois1,9769.0%125,03133.6 min7.4%
Illinois average8,48010.2%N/A34.1 min20.6%

Scott County ranked within Illinois

Scott County sits in the bottom quarter of the Illinois field on average daily traffic volume, at #95 of 102.

Scott County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureScott CountyIllinois rank
Traffic volume (AADT)1,588#95 of 102
Highway vehicle-miles per day193,064#68 of 82
Truck share on highways22.0%#35 of 82
Highway trucks per day809#60 of 82
Average travel time34.9 min#32 of 102
Average driver income$67,431#65 of 102
Average driver age49.5 yrs#53 of 102

Scott County ranks #32 of 102 on average travel time but #95 of 102 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Scott County, Illinois

On their busiest stretches, the three busiest roads in Scott County carry 5,553 vehicles a day on average, 3.5 times the typical road in the county (1,588).

I 72 is the busiest road, at 9,529 vehicles a day, 2,174 of them trucks (22.8%). No other road comes close: United States Route 67, in second place, carries 3,741. It also carries the most trucks.

Trips using I 72 are long: a median of 58.5 minutes against 34.9 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 72Motorway · 9,529vehicles2,174trucks · 22.8%
Road class
Motorway
Congestion ratio
10.2%
Median trip time
58.5 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$65,848

A main artery: I 72's busiest stretch carries 6.0 times the county average; trucks are 22.8% of it, above the county-wide 18.4%.

2United States Route 67Trunk road · 3,741vehicles491trucks · 13.1%
Road class
Trunk road
Congestion ratio
4.5%
Median trip time
37.5 min
Drivers’ median age
50.3 yrs
Drivers’ average income
$66,487

United States Route 67 carries 2.4 times the county average on its busiest stretch, where the median trip lasts 37.5 minutes.

3Main StreetTrunk road · 3,388vehicles470trucks · 13.9%
Road class
Trunk road
Congestion ratio
6.0%
Median trip time
35.5 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$65,750

At 2.1 times the county average, Main Street draws drivers from neighborhoods averaging $65,750 in household income.

41440 ETrunk road · 3,372vehicles487trucks · 14.4%
Road class
Trunk road
Congestion ratio
8.0%
Median trip time
35.4 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$65,736

The busiest stretch of 1440 E carries 2.1 times the county average; trucks are 14.4% of it, below the county-wide 18.4%.

5Old US Route 36Primary road · 3,370vehicles336trucks · 10.0%
Road class
Primary road
Congestion ratio
7.9%
Median trip time
31.6 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$65,023

On its busiest stretch, Old US Route 36 carries 2.1 times the county average; trucks are 10.0% of it, below the county-wide 18.4%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 72Motorway · #1 by traffic9,529vehicles2,174trucks · 22.8%
2United States Route 67Trunk road · #2 by traffic3,741vehicles491trucks · 13.1%
31440 ETrunk road · #4 by traffic3,372vehicles487trucks · 14.4%
4Main StreetTrunk road · #3 by traffic3,388vehicles470trucks · 13.9%
5US 67Trunk road · 3,256vehicles446trucks · 13.7%
Road class
Trunk road
Congestion ratio
4.1%
Median trip time
36.5 min
Drivers’ median age
49.9 yrs
Drivers’ average income
$65,816

US 67 peaks at 3,256 vehicles a day, 2.1 times the county average; trucks are 13.7% of it, below the county-wide 18.4%.

How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

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)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

ScottDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Scott County

The same traffic breakdown for the areas closest to Scott County, Illinois.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.