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Traffic heat map of Macon County, Illinois: 473 miles of roads shaded from blue (light) to red (heavy traffic), busiest on US 51 Business and US 36

Macon County, Illinois Traffic Counts

How busy are the roads of Macon County, Illinois? We measure 473 road miles, divided into 7,627 segments, with multi-sourced, cross-verified mobile and sensor data. Its busiest road, US 51 Business, carries 25,489 vehicles a day, 4.8 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 icon

Total Traffic Volume & Performance in Macon County, Illinois

Traffic

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

vehicles per day5,352
Trucks

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

8.0%
Average travel time

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

35.2 min
Congestion ratio

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

15.9%
Drivers’ average age

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

49.6 yrs
Drivers’ average income

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

$75,679

Our data shows 5,352 vehicles per day on the average road in Macon County, Illinois, and 2,119,631 vehicle-miles traveled per day (≈774 million per year) across its 473 miles of monitored roads. About 1 in 12 vehicles is a truck, fewer than the 1 in 10 across Illinois.

Busier roads than 85% of counties in Illinois

At 5,352 vehicles per day, the average monitored road in Macon carries 37% 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 0.9% of Illinois's statewide total. Macon carries more traffic than 85% of counties in Illinois.

The average trip takes 35.2 minutes, on par with the state level. 74% of counties in Illinois have a shorter average travel time than Macon's 35.2 minutes.

Congestion runs 23% lower than the state level, at a ratio of 15.9%, which means smoother traffic flow - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Macon County, Illinois

Trafficvehicles per day5,532
Trucks12.9%
Average travel time38.5 min
Congestion ratio13.6%
Drivers’ average age49.9 yrs
Drivers’ average income$85,581

A significant share of driving in Macon County, Illinois, 32% of vehicle-miles, happens on highways. The average highway carries 5,532 vehicles per day, about the same as the average non-highway road in the same area (5,346 vehicles per day).

With 25% of the road miles (119 miles in 240 segments), highways punch above their length, carrying 673,179 vehicle-miles traveled per day (≈246 million per year).

58% of counties in Illinois move less traffic on their highways.

Fewer highway trucks than 81% of counties in Illinois

Highway truck concentration here runs 26% lower than the state average, at 12.9%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Macon's highway truck share (12.9%) is lower than 80% of counties in Illinois. By raw truck volume, Macon carries fewer highway trucks than 81% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in Macon County, Illinois

Trafficvehicles per day5,346
Trucks5.8%
Average travel time35.1 min
Congestion ratio15.9%
Drivers’ average age49.6 yrs
Drivers’ average income$73,389

A little more than half of the driving in Macon County, Illinois happens on local roads: 68% of all vehicle-miles. A typical local road sees 5,346 vehicles per day.

Local roads also make up about 75% of the monitored road miles: 354 miles in 7,387 segments, together carrying 1,446,453 vehicle-miles traveled per day (≈528 million per year). The truck share on non-highway roads is 5.8%.

Local roads carry 55% fewer trucks by share than highways

Compared to highways, non-highway routes see 55% fewer trucks by share.

Non-highway congestion (15.9%) runs 23% lower than the state average, pointing to smoother local traffic flow.

Macon's average driver income is higher than 59% of counties in Illinois. Macon's median driver age is higher than 54% of counties in Illinois.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and a long afternoon plateau from 3:00 PM to 7:00 PM, with volumes reaching approximately 68% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 24% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
June–August is the high season, with volumes +5% versus the annual average.
Lowest month:
January is the quietest month, with volumes -12% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Macon County, Illinois, the peak hour concentrates about 7% of the day's traffic, and there is a noticeable seasonal swing of +5% in high season.

Macon County vs. Illinois Traffic Comparison

Of the four measures, average daily traffic per road differs most: Macon County runs 37% below the Illinois average. Its highway truck share is also 26% below.

MetricMacon CountyIllinois averageDifference
Traffic5,3528,480-36.9%
Truck % (Total Traffic)8.0%10.2%-21.1%
Truck % (Highway)12.9%17.3%-25.6%
Avg. Travel Time35.2 min34.1 min+3.2%

How Macon County compares

Macon County moves more traffic than any nearby county

Set against the average of the 4 areas nearest to it, Macon County is 88.3% more congested and moves 3.9 times the total daily travel; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Macon 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
Macon County5,3528.0%2,119,63135.2 min15.9%
Piatt County, Illinois2,65314.8%702,83430.7 min7.7%
De Witt County, Illinois2,31612.5%489,12034.2 min7.4%
Moultrie County, Illinois3,3897.9%310,92836.4 min8.9%
Christian County, Illinois3,0928.6%655,09634.2 min9.7%
Illinois average8,48010.2%N/A34.1 min20.6%

Macon County ranked within Illinois

Macon County sits in the top quarter of the Illinois field on average daily traffic volume, at #16 of 102.

Macon County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureMacon CountyIllinois rank
Traffic volume (AADT)5,352#16 of 102
Highway vehicle-miles per day673,179#35 of 82
Truck share on highways12.9%#66 of 82
Highway trucks per day713#67 of 82
Average travel time35.2 min#27 of 102
Average driver income$75,679#42 of 102
Average driver age49.6 yrs#47 of 102

The two ends of this table sit far apart: #16 of 102 on average daily traffic volume, against #67 of 82 on highway truck volume.

Busiest roads in Macon County, Illinois

The three busiest roads in Macon County average 20,623 vehicles a day, 3.9 times the county average of 5,352 across all its monitored roads.

US 51 Business leads with 25,489 vehicles a day, 908 of them trucks (3.6%). I 72 carries the most trucks, 2,110 a day (13.8% of its traffic), although it is not among the 5 busiest roads overall.

Freight stands out on I 72: trucks are 13.8% of the traffic there, against 8.0% county-wide.

The truck ranking looks different from the traffic one, sharing just 2 of its 5 roads.

I 72 carries longer journeys than most roads here, with a median trip of 47.2 minutes against 35.2 county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1US 51 BusinessPrimary road · 25,489vehicles908trucks · 3.6%
Road class
Primary road
Congestion ratio
62.8%
Median trip time
31.9 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$77,289

Delays build on US 51 Business: its congestion ratio of 63% over free-flow time is well above the county's 16%.

2US 36Primary road · 19,443vehicles947trucks · 4.9%
Road class
Primary road
Congestion ratio
23.2%
Median trip time
37.5 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$77,462

On its busiest stretch, US 36 carries 3.6 times the county average; trucks are 4.9% of it, below the county-wide 8.0%.

3Oakland AvenuePrimary road · 16,937vehicles662trucks · 3.9%
Road class
Primary road
Congestion ratio
20.2%
Median trip time
32.4 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$64,463

Oakland Avenue peaks at 16,937 vehicles a day, 3.2 times the county average; trucks are 3.9% of it, below the county-wide 8.0%.

4Eldorado StreetPrimary road · 16,145vehicles752trucks · 4.7%
Road class
Primary road
Congestion ratio
24.6%
Median trip time
38.3 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$63,319

Eldorado Street carries 3.0 times the county average at its busiest, 752 of them trucks (4.7%, below the county-wide 8.0%).

5Mount Zion RoadPrimary road · 15,252vehicles728trucks · 4.8%
Road class
Primary road
Congestion ratio
35.8%
Median trip time
35.7 min
Drivers’ median age
50.0 yrs
Drivers’ average income
$88,928

Travel on Mount Zion Road's busiest stretch runs 36% over free-flow time, against 16% across the county, so expect slower peak hours.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 72Motorway · 15,247vehicles2,110trucks · 13.8%
Road class
Motorway
Congestion ratio
17.5%
Median trip time
47.2 min
Drivers’ median age
49.9 yrs
Drivers’ average income
$85,775

I 72 carries 2.8 times the county average on its busiest stretch, where the median trip lasts 47.2 minutes.

222nd StreetPrimary road · 14,594vehicles1,153trucks · 7.9%
Road class
Primary road
Congestion ratio
31.7%
Median trip time
34.6 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$68,036

At 2.7 times the county average, 22nd Street draws drivers from neighborhoods averaging $68,036 in household income.

3US 51Trunk road · 13,166vehicles1,105trucks · 8.4%
Road class
Trunk road
Congestion ratio
18.7%
Median trip time
34.5 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$85,470

The busiest stretch of US 51 carries 2.5 times the county average; trucks are 8.4% of it, in line with the county-wide 8.0%.

4US 36Primary road · #2 by traffic19,443vehicles947trucks · 4.9%
5US 51 BusinessPrimary road · #1 by traffic25,489vehicles908trucks · 3.6%
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

MaconDepartment 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 Macon County

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

Need segment-level traffic data?

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