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Traffic heat map of Warren County, Illinois: 291 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Main Street

Warren County, Illinois Traffic Counts

Traffic analytics for Warren County, Illinois, calculated from real-world mobile and sensor networks on 1,675 road segments (291 road miles, about 916 ft each). Its busiest road, Main Street, carries 10,160 vehicles a day, 5.7 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Warren County, Illinois

Traffic

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

vehicles per day1,793
Trucks

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

11.6%
Average travel time

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

32.4 min
Congestion ratio

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

6.7%
Drivers’ average age

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

49.3 yrs
Drivers’ average income

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

$67,697

A typical monitored road in Warren County, Illinois sees 1,793 vehicles per day, while its 291 miles of monitored roads together handle 500,342 vehicle-miles traveled per day (≈183 million per year). Trucks are 11.6% of traffic, close to the 10.2% across Illinois.

Traffic 79% below the Illinois average

Warren sees 79% lower average daily traffic volume than the state average (1,793 vehicles per day against 8,480), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Across the whole network, that travel is about 0.2% of Illinois's statewide total. By volume, Warren's 1,793 vehicles per day trails 89% of counties in Illinois.

The average trip takes 32.4 minutes, 5% lower than the state level. Its average travel time of 32.4 minutes is shorter than 71% of counties in Illinois.

Congestion runs 67% lower than the state level, at a ratio of 6.7%, which means smoother traffic flow - delays are rare enough to plan travel times almost to the minute.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Warren County, Illinois

Trafficvehicles per day3,379
Trucks14.2%
Average travel time43.4 min
Congestion ratio8.3%
Drivers’ average age49.0 yrs
Drivers’ average income$65,293

Highways carry more than half of all travel in Warren County, Illinois (56% of vehicle-miles). The average highway carries 3,379 vehicles per day, 117% more than the average non-highway road in the same area, which carries 1,558 vehicles per day.

With 26% of the road miles (77 miles in 216 segments), highways punch above their length, carrying 280,911 vehicle-miles traveled per day (≈103 million per year).

Fewer highway trucks than 89% of counties in Illinois

Highway truck concentration here runs 18% lower than the state average, at 14.2%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Warren's highway truck share (14.2%) is lower than 72% of counties in Illinois. By raw truck volume, Warren carries fewer highway trucks than 89% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in Warren County, Illinois

Trafficvehicles per day1,558
Trucks8.1%
Average travel time30.8 min
Congestion ratio6.5%
Drivers’ average age49.6 yrs
Drivers’ average income$70,229

A significant share of driving in Warren County, Illinois, 44% of vehicle-miles, happens on local roads. A typical local road sees 1,558 vehicles per day.

Spread over 214 miles and 1,459 segments, 74% of the road network, local roads carry a lighter load per mile: 219,431 vehicle-miles traveled per day (≈80.1 million per year). About 1 in 12 vehicles on non-highway roads is a truck (8.1%).

Local congestion 69% below the Illinois average

The concentration of trucks on non-highway roads is 43% lower than on highways.

The non-highway congestion ratio of 6.5% is 69% lower than the state level, suggesting more efficient local mobility than the state average.

Trip origins here have lower average income than 62% of counties in Illinois. The driver population here skews younger than 55% of counties in Illinois.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 72% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 22% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
May–July is the high season, with volumes +6% versus the annual average.
Lowest month:
January is the quietest month, with volumes -14% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Warren County, Illinois, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +6% in high season.

Warren County vs. Illinois Traffic Comparison

The average daily traffic per road sets Warren County apart: 79% below the Illinois average. Its highway truck share is also 18% below.

MetricWarren CountyIllinois averageDifference
Traffic1,7938,480-78.9%
Truck % (Total Traffic)11.6%10.2%+13.6%
Truck % (Highway)14.2%17.3%-17.8%
Avg. Travel Time32.4 min34.1 min-5.1%

How Warren County compares

Warren County against nearby counties

Warren County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the fourth busiest roads of the five.

Warren 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
Warren County1,79311.6%500,34232.4 min6.7%
Henderson County, Illinois1,58010.2%252,44933.9 min5.1%
Knox County, Illinois2,90613.1%1,353,67233.8 min9.7%
Mercer County, Illinois2,1969.0%299,99429.6 min8.4%
McDonough County, Illinois3,0059.5%456,20538.6 min7.9%
Illinois average8,48010.2%N/A34.1 min20.6%

Warren County ranked within Illinois

Warren County sits in the bottom quarter of the Illinois field on average daily traffic volume, at #91 of 102.

Warren County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureWarren CountyIllinois rank
Traffic volume (AADT)1,793#91 of 102
Highway vehicle-miles per day280,911#60 of 82
Truck share on highways14.2%#59 of 82
Highway trucks per day481#73 of 82
Average travel time32.4 min#73 of 102
Average driver income$67,697#64 of 102
Average driver age49.3 yrs#57 of 102

Busiest roads in Warren County, Illinois

Traffic concentrates on a few corridors: the three busiest roads average 8,232 vehicles a day, against 1,793 on the average road in Warren County.

Main Street leads with 10,160 vehicles a day, 387 of them trucks (3.8%). Chicago-Kansas City Expressway carries the most trucks, 1,530 a day (16.2% of its traffic), although it ranks #2 for all traffic.

Few trucks use Main Street: 3.8% of its traffic, under half the county's 11.6%.

Trips using US 67 are long: a median of 43.9 minutes against 32.4 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Main StreetSecondary road · 10,160vehicles387trucks · 3.8%
Road class
Secondary road
Congestion ratio
21.6%
Median trip time
29.9 min
Drivers’ median age
49.3 yrs
Drivers’ average income
$65,661

Delays build on Main Street: its congestion ratio of 22% over free-flow time is well above the county's 7%.

2Chicago-Kansas City ExpresswayMotorway · 9,461vehicles1,530trucks · 16.2%
Road class
Motorway
Congestion ratio
9.7%
Median trip time
42.4 min
Drivers’ median age
48.5 yrs
Drivers’ average income
$63,061

Chicago-Kansas City Expressway carries through traffic: the median trip using it lasts 42.4 minutes, against 32.4 for the county.

3West BroadwaySecondary road · 5,075vehicles194trucks · 3.8%
Road class
Secondary road
Congestion ratio
11.6%
Median trip time
27.1 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$69,207

The busiest stretch of West Broadway carries 2.8 times the county average; trucks are 3.8% of it, below the county-wide 11.6%.

4US 34Trunk road · 4,927vehicles542trucks · 11.0%
Road class
Trunk road
Congestion ratio
12.0%
Median trip time
39.6 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$68,497

On its busiest stretch, US 34 carries 2.7 times the county average; trucks are 11.0% of it, in line with the county-wide 11.6%.

5Route 67Primary road · 3,792vehicles294trucks · 7.8%
Road class
Primary road
Congestion ratio
10.2%
Median trip time
33.8 min
Drivers’ median age
50.8 yrs
Drivers’ average income
$70,934

Route 67 peaks at 3,792 vehicles a day, 2.1 times the county average; trucks are 7.8% of it, below the county-wide 11.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Chicago-Kansas City ExpresswayMotorway · #2 by traffic9,461vehicles1,530trucks · 16.2%
2US 34Trunk road · #4 by traffic4,927vehicles542trucks · 11.0%
3Main StreetSecondary road · #1 by traffic10,160vehicles387trucks · 3.8%
4US 67Primary road · 2,682vehicles331trucks · 12.3%
Road class
Primary road
Congestion ratio
6.1%
Median trip time
43.9 min
Drivers’ median age
51.4 yrs
Drivers’ average income
$73,279

US 67 peaks at 2,682 vehicles a day, 50% more than the county average; trucks are 12.3% of it, above the county-wide 11.6%.

5Route 67Primary road · #5 by traffic3,792vehicles294trucks · 7.8%
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

WarrenDepartment 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 Warren County

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

Need segment-level traffic data?

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