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Traffic heat map of McDonough County, Illinois: 234 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Jackson Street

McDonough County, Illinois Traffic Counts

How busy are the roads of McDonough County, Illinois? We measure 234 road miles, divided into 1,518 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, Jackson Street, carries 12,139 vehicles a day, 4.0 times the average road. 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 Volume & Performance in McDonough County, Illinois

Traffic

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

vehicles per day3,005
Trucks

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

9.5%
Average travel time

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

38.6 min
Congestion ratio

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

7.9%
Drivers’ average age

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

45.5 yrs
Drivers’ average income

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

$55,497

Our data shows 3,005 vehicles per day on the average road in McDonough County, Illinois, and 456,205 vehicle-miles traveled per day (≈167 million per year) across its 234 miles of monitored roads. About 1 in 11 vehicles is a truck, in line with Illinois (10.2%).

Longer trips than 92% of counties in Illinois

McDonough's average daily traffic volume is 65% lower than the state average - 3,005 vehicles per day against 8,480 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, McDonough accounts for about 0.2% of Illinois's statewide total of vehicle-miles. McDonough carries more traffic than 51% of counties in Illinois.

The average trip takes 38.6 minutes, 13% higher than the state level. Its average travel time of 38.6 minutes is longer than 92% of counties in Illinois.

At 62% lower than the state level, the 7.9% congestion ratio signals 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 McDonough County, Illinois

Trafficvehicles per day3,199
Trucks13.7%
Average travel time47.4 min
Congestion ratio6.8%
Drivers’ average age45.6 yrs
Drivers’ average income$61,614

Highways carry a smaller share of travel in McDonough County, Illinois, 26% of vehicle-miles; most driving happens on local roads. The average highway carries 3,199 vehicles per day, 7% more than the average non-highway road in the same area, which carries 2,983 vehicles per day.

Highways make up 20% of the monitored road miles (47 miles, 155 segments), so they carry more than their share: 117,797 vehicle-miles traveled per day (≈43.0 million per year).

Fewer highway trucks than 98% of counties in Illinois

At 13.7%, highway truck share is 21% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

77% of counties in Illinois see a higher highway truck share than McDonough's 13.7%. By raw truck volume, McDonough carries fewer highway trucks than 98% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in McDonough County, Illinois

Trafficvehicles per day2,983
Trucks8.1%
Average travel time37.5 min
Congestion ratio8.0%
Drivers’ average age45.5 yrs
Drivers’ average income$54,499

Most travel in McDonough County, Illinois happens on local roads, 74% of all vehicle-miles. On the average non-highway road, that comes to 2,983 vehicles per day.

Their share of road miles is similar, 80% (187 miles in 1,363 segments), carrying 338,408 vehicle-miles traveled per day (≈124 million per year). The truck share on non-highway roads is 8.1%.

Drivers from lower-income areas than 97% of counties in Illinois

The concentration of trucks on non-highway roads is 41% lower than on highways.

At 61% lower than the state level, the non-highway congestion ratio of 8.0% signals easier movement on local roads.

McDonough's average driver income is lower than 97% of counties in Illinois. The driver population here skews younger than 92% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

McDonough County vs. Illinois Traffic Comparison

The average daily traffic per road sets McDonough County apart: 65% below the Illinois average. Its highway truck share is also 21% below.

MetricMcDonough CountyIllinois averageDifference
Traffic3,0058,480-64.6%
Truck % (Total Traffic)9.5%10.2%-6.6%
Truck % (Highway)13.7%17.3%-20.9%
Avg. Travel Time38.6 min34.1 min+13.0%

How McDonough County compares

McDonough County has the busiest roads among its nearby counties

Compared with its 4 closest neighbours, McDonough County carries 72.7% more traffic on a typical road; it has the busiest roads of the five.

McDonough 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
McDonough County3,0059.5%456,20538.6 min7.9%
Schuyler County, Illinois1,3759.4%184,77033.9 min5.9%
Hancock County, Illinois1,6929.6%402,26732.6 min5.6%
Fulton County, Illinois2,3137.8%596,75534.2 min7.7%
Henderson County, Illinois1,58010.2%252,44933.9 min5.1%
Illinois average8,48010.2%N/A34.1 min20.6%

McDonough County ranked within Illinois

McDonough County sits in the bottom quarter of the Illinois field on highway truck volume, at #80 of 82.

McDonough County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureMcDonough CountyIllinois rank
Traffic volume (AADT)3,005#50 of 102
Highway vehicle-miles per day117,797#73 of 82
Truck share on highways13.7%#63 of 82
Highway trucks per day439#80 of 82
Average travel time38.6 min#9 of 102
Average driver income$55,497#99 of 102
Average driver age45.5 yrs#94 of 102

McDonough County ranks #9 of 102 on average travel time but #80 of 82 on highway truck volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in McDonough County, Illinois

The three busiest roads in McDonough County average 8,537 vehicles a day, 2.8 times the county average of 3,005 across all its monitored roads.

Jackson Street leads with 12,139 vehicles a day, 776 of them trucks (6.4%). That is 74% more than the next road, Chicago-Kansas City Expressway (6,992). Chicago-Kansas City Expressway carries the most trucks, 814 a day (11.6% of its traffic), although it ranks #2 for all traffic.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Jackson StreetPrimary road · 12,139vehicles776trucks · 6.4%
Road class
Primary road
Congestion ratio
21.7%
Median trip time
43.8 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$47,470

Jackson Street is one of the more congested roads here: trips take 22% longer than at free-flow speed, against 8% county-wide.

2Chicago-Kansas City ExpresswayTrunk road · 6,992vehicles814trucks · 11.6%
Road class
Trunk road
Congestion ratio
10.5%
Median trip time
44.2 min
Drivers’ median age
45.8 yrs
Drivers’ average income
$61,598

Chicago-Kansas City Expressway peaks at 6,992 vehicles a day, 2.3 times the county average; trucks are 11.6% of it, above the county-wide 9.5%.

31200th StreetPrimary road · 6,481vehicles576trucks · 8.9%
Road class
Primary road
Congestion ratio
7.5%
Median trip time
37.2 min
Drivers’ median age
45.7 yrs
Drivers’ average income
$61,091

1200th Street carries 2.2 times the county average at its busiest, 576 of them trucks (8.9%, below the county-wide 9.5%).

4Lafayette StreetPrimary road · 6,259vehicles336trucks · 5.4%
Road class
Primary road
Congestion ratio
8.0%
Median trip time
35.9 min
Drivers’ median age
43.8 yrs
Drivers’ average income
$52,112

Lafayette Street carries 2.1 times the county average on its busiest stretch, where the median trip lasts 35.9 minutes.

5Monmouth StreetTrunk road · 5,612vehicles808trucks · 14.4%
Road class
Trunk road
Congestion ratio
8.3%
Median trip time
42.6 min
Drivers’ median age
45.2 yrs
Drivers’ average income
$62,921

Monmouth Street is busy by local standards, at 87% more than the county average on its busiest stretch; trucks are 14.4% of it, above the county-wide 9.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Chicago-Kansas City ExpresswayTrunk road · #2 by traffic6,992vehicles814trucks · 11.6%
2Monmouth StreetTrunk road · #5 by traffic5,612vehicles808trucks · 14.4%
3Jackson StreetPrimary road · #1 by traffic12,139vehicles776trucks · 6.4%
41200th StreetPrimary road · #3 by traffic6,481vehicles576trucks · 8.9%
51200th RoadPrimary road · 4,603vehicles437trucks · 9.5%
Road class
Primary road
Congestion ratio
10.3%
Median trip time
36.0 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$55,554

1200th Road peaks at 4,603 vehicles a day, 53% more than the county average; trucks are 9.5% of it, in line with the county-wide 9.5%.

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

McDonoughDepartment 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 McDonough County

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

Need segment-level traffic data?

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