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Traffic heat map of Clinton County, Illinois: 210 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 64 and 12th Street

Clinton County, Illinois Traffic Counts

Its busiest road, I 64, carries 24,794 vehicles a day, 5.8 times the average road. This page breaks down traffic in Clinton County, Illinois across 210 miles of monitored roads split into 2,453 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 Clinton County, Illinois

Traffic

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

vehicles per day4,280
Trucks

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

11.7%
Average travel time

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

31.1 min
Congestion ratio

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

10.8%
Drivers’ average age

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

48.3 yrs
Drivers’ average income

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

$86,545

A typical monitored road in Clinton County, Illinois sees 4,280 vehicles per day, while its 210 miles of monitored roads together handle 944,601 vehicle-miles traveled per day (≈345 million per year). Trucks are 11.7% of traffic, close to the 10.2% across Illinois.

Shorter trips than 90% of counties in Illinois

At 4,280 vehicles per day, the average monitored road in Clinton carries 50% less traffic than the state average of 8,480, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.4% of Illinois's statewide total. By volume, Clinton's 4,280 vehicles per day outpaces 73% of counties in Illinois.

The average trip takes 31.1 minutes, 9% lower than the state level. On travel time, Clinton runs shorter than 90% of counties in Illinois.

Congestion runs 48% lower than the state level, at a ratio of 10.8%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Clinton County, Illinois

Trafficvehicles per day7,502
Trucks16.6%
Average travel time44.3 min
Congestion ratio14.3%
Drivers’ average age47.6 yrs
Drivers’ average income$82,695

Travel in Clinton County, Illinois splits roughly evenly, with about half of it (49% of vehicle-miles) on highways. The average highway carries 7,502 vehicles per day, 91% more than the average non-highway road in the same area, which carries 3,938 vehicles per day.

With 27% of the road miles (56 miles in 236 segments), highways punch above their length, carrying 467,312 vehicle-miles traveled per day (≈171 million per year).

A typical mix of freight and passenger traffic

Highway truck concentration here (16.6%) closely tracks the state average for similar road classifications. The highway traffic mix is typical for Illinois: neither freight- nor commuter-dominated.

64% of counties in Illinois see a higher highway truck share than Clinton's 16.6%. By raw truck volume, Clinton carries fewer highway trucks than 63% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in Clinton County, Illinois

Trafficvehicles per day3,938
Trucks6.8%
Average travel time29.7 min
Congestion ratio10.4%
Drivers’ average age48.6 yrs
Drivers’ average income$88,507

Travel in Clinton County, Illinois splits roughly evenly, with about half of it (51% of vehicle-miles) on local roads. A typical local road sees 3,938 vehicles per day.

Spread over 154 miles and 2,217 segments, 73% of the road network, local roads carry a lighter load per mile: 477,289 vehicle-miles traveled per day (≈174 million per year). The truck share on non-highway roads is 6.8%.

Drivers from higher-income areas than 83% of counties in Illinois

Compared to highways, non-highway routes see 59% fewer trucks by share.

At 50% lower than the state level, the non-highway congestion ratio of 10.4% signals easier movement on local roads.

Trip origins here have higher average income than 83% of counties in Illinois. Clinton's median driver age is lower than 66% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Clinton County vs. Illinois Traffic Comparison

The average daily traffic per road sets Clinton County apart: 50% below the Illinois average.

MetricClinton CountyIllinois averageDifference
Traffic4,2808,480-49.5%
Truck % (Total Traffic)11.7%10.2%+14.6%
Truck % (Highway)16.6%17.3%-4.0%
Avg. Travel Time31.1 min34.1 min-8.9%

How Clinton County compares

Clinton County against nearby counties

Against the 4 nearest areas, Clinton County moves 40.3% of the total daily travel and runs 6.2 percentage points less truck traffic; 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.

Clinton 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
Clinton County4,28011.7%944,60131.1 min10.8%
Washington County, Illinois2,99418.7%1,213,45540.5 min6.9%
Bond County, Illinois2,27723.2%740,17129.1 min7.6%
Marion County, Illinois5,03818.5%866,13033.8 min12.8%
Madison County, Illinois6,92511.1%6,547,56132.1 min18.1%
Illinois average8,48010.2%N/A34.1 min20.6%

Clinton County ranked within Illinois

Clinton County sits in the bottom quarter of the Illinois field on average travel time, at #92 of 102.

Clinton County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureClinton CountyIllinois rank
Traffic volume (AADT)4,280#28 of 102
Highway vehicle-miles per day467,312#44 of 82
Truck share on highways16.6%#53 of 82
Highway trucks per day1,248#52 of 82
Average travel time31.1 min#92 of 102
Average driver income$86,545#18 of 102
Average driver age48.3 yrs#68 of 102

Clinton County ranks #18 of 102 on average driver income but #92 of 102 on average travel time - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Clinton County, Illinois

On their busiest stretches, the three busiest roads in Clinton County carry 14,933 vehicles a day on average, 3.5 times the typical road in the county (4,280).

I 64 leads with 24,794 vehicles a day, 5,764 of them trucks (23.2%). That is 2.3 times the next road, 12th Street (10,663). It tops the truck ranking too, with the most trucks.

I 64 carries longer journeys than most roads here, with a median trip of 51.6 minutes against 31.1 county-wide.

Trucks make up 23.2% of traffic on I 64, against 11.7% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 64Motorway · 24,794vehicles5,764trucks · 23.2%
Road class
Motorway
Congestion ratio
24.1%
Median trip time
51.6 min
Drivers’ median age
46.3 yrs
Drivers’ average income
$79,969

Delays build on I 64: its congestion ratio of 24% over free-flow time is well above the county's 11%.

212th StreetTrunk road · 10,663vehicles964trucks · 9.0%
Road class
Trunk road
Median trip time
33.7 min
Drivers’ median age
48.2 yrs
Drivers’ average income
$81,494

At 2.5 times the county average, 12th Street draws drivers from neighborhoods averaging $81,494 in household income.

3Old US 50Secondary road · 9,342vehicles718trucks · 7.7%
Road class
Secondary road
Median trip time
27.9 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$92,177

The busiest stretch of Old US 50 carries 2.2 times the county average; trucks are 7.7% of it, below the county-wide 11.7%.

4Old Route 50Secondary road · 8,974vehicles749trucks · 8.3%
Road class
Secondary road
Median trip time
29.4 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$85,317

On its busiest stretch, Old Route 50 carries 2.1 times the county average; trucks are 8.3% of it, below the county-wide 11.7%.

5Hanover StreetSecondary road · 8,942vehicles484trucks · 5.4%
Road class
Secondary road
Congestion ratio
21.2%
Median trip time
28.0 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$93,411

Travel on Hanover Street's busiest stretch runs 21% over free-flow time, against 11% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 64Motorway · #1 by traffic24,794vehicles5,764trucks · 23.2%
212th StreetTrunk road · #2 by traffic10,663vehicles964trucks · 9.0%
3Old Route 50Secondary road · #4 by traffic8,974vehicles749trucks · 8.3%
4US 50Trunk road · 7,524vehicles740trucks · 9.8%
Road class
Trunk road
Congestion ratio
17.0%
Median trip time
37.8 min
Drivers’ median age
48.4 yrs
Drivers’ average income
$88,809

US 50 carries 76% more than the county average at its busiest, 740 of them trucks (9.8%, below the county-wide 11.7%).

5Walnut StreetSecondary road · 8,495vehicles736trucks · 8.7%
Road class
Secondary road
Median trip time
29.4 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$84,180

Walnut Street peaks at 8,495 vehicles a day, 2.0 times the county average; trucks are 8.7% of it, below the county-wide 11.7%.

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

ClintonDepartment 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 Clinton County

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

Need segment-level traffic data?

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