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Traffic heat map of Hardin County, Illinois: 46 miles of roads shaded from blue (light) to red (heavy traffic), busiest on IL 34 and Main Street

Hardin County, Illinois Traffic Counts

Our Hardin County, Illinois traffic data covers 1,568 road segments over 46 road miles, with an average segment of just 153 ft. Its drivers are the oldest of any county in Illinois, a median 58 years. Whether you are evaluating a new retail location, planning routes or assessing infrastructure, these numbers replace guesswork.
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 Hardin County, Illinois

Traffic

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

vehicles per day903
Trucks

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

9.8%
Average travel time

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

32.9 min
Drivers’ average age

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

58.5 yrs
Drivers’ average income

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

$53,204

Our data shows 903 vehicles per day on the average road in Hardin County, Illinois, and 37,848 vehicle-miles traveled per day (≈13.8 million per year) across its 46 miles of monitored roads. About 1 in 10 vehicles is a truck, in line with Illinois (10.2%).

Quieter roads than 99% of counties in Illinois

At 903 vehicles per day, the average monitored road in Hardin carries 89% 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. In total volume terms, its road network carries less than 0.1% of Illinois's statewide total of vehicle-miles. 99% of counties in Illinois see more traffic than Hardin's 903 vehicles per day.

At 32.9 minutes, the average travel time matches the state level closely. 65% of counties in Illinois have a longer average travel time than Hardin's 32.9 minutes.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Hardin County, Illinois, the peak hour concentrates about 8% of the day's traffic.

Hardin County vs. Illinois Traffic Comparison

The average daily traffic per road sets Hardin County apart: 89% below the Illinois average. The other measures stay close to the average.

MetricHardin CountyIllinois averageDifference
Traffic9038,480-89.4%
Truck % (Total Traffic)9.8%10.2%-3.5%
Avg. Travel Time32.9 min34.1 min-3.5%

How Hardin County compares

Hardin County moves the least traffic of its nearby counties

Against the 4 nearest areas, Hardin County moves 16.0% of the total daily travel and carries 45.1% less traffic on a typical road; it has the quietest roads of the five. Smaller and quieter on both counts: a shorter network than the areas around it, carrying lighter traffic across it.

Hardin 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
Hardin County9039.8%37,84832.9 minN/A
Crittenden County, Kentucky1,36510.0%158,61631.0 min4.7%
Gallatin County, Illinois1,58911.4%151,65839.1 min5.1%
Union County, Kentucky1,65510.8%293,28333.1 min5.2%
Livingston County, Kentucky1,96616.0%340,79736.1 min6.1%
Illinois average8,48010.2%N/A34.1 min20.6%

Hardin County ranked within Illinois

Hardin County posts the highest average driver age of any county-level area in Illinois.

Hardin County ranked among 102 county-level areas in Illinois (1 = highest).
MeasureHardin CountyIllinois rank
Traffic volume (AADT)903#101 of 102
Average travel time32.9 min#67 of 102
Average driver income$53,204#100 of 102
Average driver age58.5 yrs#1 of 102

Hardin County ranks #1 of 102 on average driver age but #100 of 102 on average driver income. The driver population here skews older and lower-income than most of Illinois.

Busiest roads in Hardin County, Illinois

Traffic concentrates on a few corridors: the three busiest roads average 1,687 vehicles a day, against 903 on the average road in Hardin County.

IL 34 leads with 1,849 vehicles a day, 114 of them trucks (6.2%). Dunn Street carries the most trucks, 158 a day (10.9% of its traffic), although it ranks #4 for all traffic.

Few trucks use Main Street: 4.7% of its traffic, under half the county's 9.8%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1IL 34Secondary road · 1,849vehicles114trucks · 6.2%
Road class
Secondary road
Median trip time
32.6 min
Drivers’ median age
59.2 yrs
Drivers’ average income
$51,023

IL 34 peaks at 1,849 vehicles a day, 2.0 times the county average; trucks are 6.2% of it, below the county-wide 9.8%.

2Main StreetTertiary road · 1,738vehicles81trucks · 4.7%
Road class
Tertiary road
Median trip time
41.0 min
Drivers’ median age
59.2 yrs
Drivers’ average income
$52,959

Main Street is busy by local standards, at 92% more than the county average on its busiest stretch; trucks are 4.7% of it, below the county-wide 9.8%.

31st StreetPrimary road · 1,474vehicles138trucks · 9.3%
Road class
Primary road
Median trip time
27.7 min
Drivers’ median age
58.3 yrs
Drivers’ average income
$47,939

1st Street peaks at 1,474 vehicles a day, 63% more than the county average; trucks are 9.3% of it, in line with the county-wide 9.8%.

4Dunn StreetPrimary road · 1,445vehicles158trucks · 10.9%
Road class
Primary road
Median trip time
25.7 min
Drivers’ median age
58.5 yrs
Drivers’ average income
$47,513

Dunn Street carries 60% more than the county average at its busiest, 158 of them trucks (10.9%, above the county-wide 9.8%).

5Il 146Primary road · 1,050vehicles111trucks · 10.6%
Road class
Primary road
Median trip time
31.4 min
Drivers’ median age
57.9 yrs
Drivers’ average income
$51,140

Il 146 carries 16% more than the county average on its busiest stretch, where the median trip lasts 31.4 minutes.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Dunn StreetPrimary road · #4 by traffic1,445vehicles158trucks · 10.9%
21st StreetPrimary road · #3 by traffic1,474vehicles138trucks · 9.3%
3IL 34Secondary road · #1 by traffic1,849vehicles114trucks · 6.2%
4Il 146Primary road · #5 by traffic1,050vehicles111trucks · 10.6%
534 NorthPrimary road · 859vehicles94trucks · 10.9%
Road class
Primary road
Median trip time
36.8 min
Drivers’ median age
58.7 yrs
Drivers’ average income
$55,101

Even at its busiest, 34 North carries about the same as the county average; trucks are 10.9% of it, above the county-wide 9.8%.

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

HardinDepartment 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 Hardin County

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

Need segment-level traffic data?

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