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Traffic heat map of Greene County, Illinois: 147 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street and 5th Street

Greene County, Illinois Traffic Counts

How busy are the roads of Greene County, Illinois? We measure 147 road miles, divided into 1,307 segments, with multi-sourced, cross-verified mobile and sensor data. The average road here carries 2,318 vehicles a day, 73% less than the Illinois average of 8,480. The breakdown below covers volume, trucks, congestion and driver profiles for retailers, logistics planners and engineers.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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total traffic icon

Total Traffic Volume & Performance in Greene County, Illinois

Traffic

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

vehicles per day2,318
Trucks

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

11.4%
Average travel time

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

35.1 min
Congestion ratio

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

7.4%
Drivers’ average age

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

50.1 yrs
Drivers’ average income

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

$67,303

A typical monitored road in Greene County, Illinois sees 2,318 vehicles per day, while its 147 miles of monitored roads together handle 229,168 vehicle-miles traveled per day (≈83.6 million per year). Trucks are 11.4% of traffic, close to the 10.2% across Illinois.

Traffic 73% below the Illinois average

At 2,318 vehicles per day, the average monitored road in Greene carries 73% less traffic than the state average of 8,480, suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Greene accounts for less than 0.1% of Illinois's statewide total of vehicle-miles. By volume, Greene's 2,318 vehicles per day trails 70% of counties in Illinois.

At 35.1 minutes, the average travel time matches the state level closely. 73% of counties in Illinois have a shorter average travel time than Greene's 35.1 minutes.

The congestion ratio of 7.4% is 64% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Greene County, Illinois

Trafficvehicles per day4,929
Trucks13.2%
Average travel time32.0 min
Congestion ratio11.7%
Drivers’ average age50.2 yrs
Drivers’ average income$65,020

Travel in Greene County, Illinois splits roughly evenly, with about half of it (49% of vehicle-miles) on highways. The average highway carries 4,929 vehicles per day, 288% more than the average non-highway road in the same area, which carries 1,272 vehicles per day.

With 17% of the road miles (25 miles in 374 segments), highways punch above their length, carrying 112,077 vehicle-miles traveled per day (≈40.9 million per year).

Fewer highway trucks than 86% of counties in Illinois

At 13.2%, highway truck share is 24% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Greene's highway truck share (13.2%) is lower than 79% of counties in Illinois. Greene's highway truck count is lower than 86% of counties in Illinois, at roughly 648 trucks per day.

non-highway traffic icon

Non-highway Traffic in Greene County, Illinois

Trafficvehicles per day1,272
Trucks9.7%
Average travel time36.4 min
Congestion ratio5.7%
Drivers’ average age49.3 yrs
Drivers’ average income$70,235

Travel in Greene County, Illinois splits roughly evenly, with about half of it (51% of vehicle-miles) on local roads. The average non-highway road carries 1,272 vehicles per day.

Spread over 122 miles and 933 segments, 83% of the road network, local roads carry a lighter load per mile: 117,092 vehicle-miles traveled per day (≈42.7 million per year). About 1 in 10 vehicles on non-highway roads is a truck (9.7%).

Local congestion 72% below the Illinois average

Compared to highways, non-highway routes see 26% fewer trucks by share.

At 72% lower than the state level, the non-highway congestion ratio of 5.7% signals easier movement on local roads.

Trip origins here have lower average income than 64% of counties in Illinois. 66% of counties in Illinois have a younger driver population than Greene.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Greene County vs. Illinois Traffic Comparison

The average daily traffic per road sets Greene County apart: 73% below the Illinois average. Its highway truck share is also 24% below.

MetricGreene CountyIllinois averageDifference
Traffic2,3188,480-72.7%
Truck % (Total Traffic)11.4%10.2%+11.8%
Truck % (Highway)13.2%17.3%-24.1%
Avg. Travel Time35.1 min34.1 min+3.0%

How Greene County compares

Greene County against nearby counties

Nothing in this table sets Greene County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five. The same kind of road, just less of it: traffic per road matches the areas around it while the network itself is smaller.

Greene 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
Greene County2,31811.4%229,16835.1 min7.4%
Jersey County, Illinois3,7789.3%403,93831.4 min10.7%
Calhoun County, Illinois7787.9%72,34830.4 min4.5%
Scott County, Illinois1,58818.4%270,82534.9 min4.7%
Macoupin County, Illinois2,80112.5%988,57732.1 min8.1%
Illinois average8,48010.2%N/A34.1 min20.6%

Greene County ranked within Illinois

Greene County sits in the bottom quarter of the Illinois field on highway travel volume, at #75 of 82.

Greene County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureGreene CountyIllinois rank
Traffic volume (AADT)2,318#72 of 102
Highway vehicle-miles per day112,077#75 of 82
Truck share on highways13.2%#65 of 82
Highway trucks per day648#71 of 82
Average travel time35.1 min#28 of 102
Average driver income$67,303#66 of 102
Average driver age50.1 yrs#35 of 102

The two ends of this table sit far apart: #28 of 102 on average travel time, against #75 of 82 on highway travel volume.

Busiest roads in Greene County, Illinois

The three busiest roads in Greene County average 5,952 vehicles a day, 2.6 times the county average of 2,318 across all its monitored roads.

Main Street is the busiest road, at 6,801 vehicles a day, 1,008 of them trucks (14.8%). It also carries the most trucks.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetTrunk road · 6,801vehicles1,008trucks · 14.8%
Road class
Trunk road
Congestion ratio
16.1%
Median trip time
30.2 min
Drivers’ median age
50.5 yrs
Drivers’ average income
$62,882

Delays build on Main Street: its congestion ratio of 16% over free-flow time is well above the county's 7%.

25th StreetTrunk road · 5,824vehicles589trucks · 10.1%
Road class
Trunk road
Congestion ratio
13.9%
Median trip time
33.7 min
Drivers’ median age
50.2 yrs
Drivers’ average income
$65,679

On its busiest stretch, 5th Street carries 2.5 times the county average; trucks are 10.1% of it, below the county-wide 11.4%.

3State StreetTrunk road · 5,230vehicles640trucks · 12.2%
Road class
Trunk road
Congestion ratio
12.4%
Median trip time
30.0 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$62,461

State Street peaks at 5,230 vehicles a day, 2.3 times the county average; trucks are 12.2% of it, above the county-wide 11.4%.

4State AvenueTrunk road · 5,176vehicles774trucks · 15.0%
Road class
Trunk road
Congestion ratio
12.2%
Median trip time
28.2 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$62,758

State Avenue carries 2.2 times the county average at its busiest, 774 of them trucks (15.0%, above the county-wide 11.4%).

5US 67Trunk road · 4,686vehicles541trucks · 11.5%
Road class
Trunk road
Congestion ratio
10.8%
Median trip time
33.1 min
Drivers’ median age
50.7 yrs
Drivers’ average income
$68,209

US 67 carries 2.0 times the county average on its busiest stretch, where the median trip lasts 33.1 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Main StreetTrunk road · #1 by traffic6,801vehicles1,008trucks · 14.8%
2State AvenueTrunk road · #4 by traffic5,176vehicles774trucks · 15.0%
3State StreetTrunk road · #3 by traffic5,230vehicles640trucks · 12.2%
45th StreetTrunk road · #2 by traffic5,824vehicles589trucks · 10.1%
5US 67Trunk road · #5 by traffic4,686vehicles541trucks · 11.5%
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

GreeneDepartment 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 Greene County

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

Need segment-level traffic data?

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