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Randolph County, Illinois Traffic Counts

This page delivers traffic analytics for Randolph County, Illinois. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Randolph County, Illinois among 214 road miles divided in 2,302 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 491 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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Total Traffic Volume & Performance

Traffic

Traffic

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

3,585

Trucks

Trucks

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

7.7%

Average travel time

Average travel time

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

33.8 min

Congestion ratio

Congestion ratio

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

11.0%

Drivers’ average age

Drivers’ average age

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

50.1 yrs

Drivers’ average income

Drivers’ average income

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

$73,714

Our data indicates an estimated average traffic volume of 3,585 vehicles per day in Randolph County, Illinois that results in 530,328 vehicle-miles traveled per day (≈194 million per year). The traffic stream is comprised of an average of 1 truck for every 13 vehicles. Typical time spent behind the wheel per trip is 33.8 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the Illinois state averages: Randolph's average daily traffic volume is 58% lower than the state average - 3,585 vehicles per day against 8,480 - suggesting less traffic load per road, a critical factor for logistics and site planning. In total volume terms, its road network carries 530,328 vehicle-miles traveled per day (≈194 million per year), about 0.2% of Illinois's statewide total. The average trip takes 33.8 minutes, on par with the state level. The congestion ratio of 11.0% is 47% lower, pointing to smoother traffic flow than the state level - crucial for traffic control improvement and logistics planning. By volume, Randolph's 3,585 vehicles per day outpaces 67% of counties in Illinois. Its average travel time of 33.8 minutes is longer than 53% of counties in Illinois.

Highway vs. Non-Highway Traffic Analysis

Analytical insight

N/A
non-highway traffic icon

Non-highway traffic

Traffic

Traffic

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

3,585

Trucks

Trucks

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

7.7%

Average travel time

Average travel time

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

33.8 min

Congestion ratio

Congestion ratio

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

11.0%

Drivers’ average age

Drivers’ average age

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

50.1 yrs

Drivers’ average income

Drivers’ average income

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

$73,714

The non-highway road network in Randolph County, Illinois supports a substantial volume of traffic. The average non-highway road carries 3,585 vehicles per day. That average covers 214 non-highway road miles divided in 2,302 segments (average segment length 491 ft), together carrying 530,328 vehicle-miles traveled per day (≈194 million per year). Trucks constitute 7.7% of non-highway traffic.

Analytical insight

The non-highway congestion ratio of 11.0% is 47% lower than the state level, suggesting more efficient local mobility than the state average. 53% of counties in Illinois see shorter overall travel times than Randolph. Randolph's average driver income exceeds 53% of counties in Illinois. Randolph's median driver age is higher than 65% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Analytical insight

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

Traffic Flow Profile Comparison

Metric

Randolph

Illinois
Average

Difference

Traffic

3,585

8,480

-57.7%

Truck % (Total Traffic)

7.7%

10.2%

-24.3%

Truck % (Highway)

17.3%

Avg. Travel Time

33.8 min

34.1 min

-0.9%

How Randolph County compares

Randolph County against nearby areas

Randolph 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 busiest roads of the five.

Randolph 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
Randolph County3,5857.7%530,32833.8 min11.0%
Perry County, Missouri3,13013.8%747,96029.7 minN/A
Ste. Genevieve County, Missouri2,75515.8%889,40334.6 min11.5%
Perry County, Illinois3,0548.5%377,76536.1 min8.9%
Jackson County, Illinois3,2956.4%904,75534.3 min8.8%
Illinois average8,48010.2%N/A34.1 min20.6%

Randolph County ranked within Illinois

Randolph County sits close to the Illinois median on every measure below - no single figure sets it apart from the state as a whole.

Where Randolph County sits among Illinois's county-level areas on each measure. Rank 1 is the highest value in the state, whether or not that is the outcome you want; the field size differs by measure because not every county carries highway data.
MeasureRandolph CountyIllinois rank
Traffic volume (AADT)3,585#34 of 102
Average travel time33.8 min#48 of 102
Average driver income$73,714#48 of 102
Average driver age50.1 yrs#36 of 102

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

IllinoisDepartment of Transportation

Historical traffic pattern databases

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

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Counties near Randolph County

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

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