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Traffic heat map of Macoupin County, Illinois: 314 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 55 and 1st South Street

Macoupin County, Illinois Traffic Counts

Traffic analytics for Macoupin County, Illinois, calculated from real-world mobile and sensor networks on 4,345 road segments (314 road miles, about 382 ft each). Its busiest road, I 55, carries 28,062 vehicles a day, 10.0 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Macoupin County, Illinois

Traffic

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

vehicles per day2,801
Trucks

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

12.5%
Average travel time

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

32.1 min
Congestion ratio

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

8.1%
Drivers’ average age

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

50.1 yrs
Drivers’ average income

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

$77,361

Our data shows 2,801 vehicles per day on the average road in Macoupin County, Illinois, and 988,577 vehicle-miles traveled per day (≈361 million per year) across its 314 miles of monitored roads. At 12.5%, the truck share runs above the 10.2% across Illinois: about 1 in 8 vehicles.

Traffic 67% below the Illinois average

Macoupin sees 67% lower average daily traffic volume than the state average (2,801 vehicles per day against 8,480), suggesting less demand on each road - quiet roads that suit freight movement more than drive-by retail. Network-wide, Macoupin accounts for about 0.4% of Illinois's statewide total of vehicle-miles. By volume, Macoupin's 2,801 vehicles per day trails 54% of counties in Illinois.

Journey times run 6% lower than the state level, at 32.1 minutes on average. 75% of counties in Illinois have a longer average travel time than Macoupin's 32.1 minutes.

The congestion ratio of 8.1% is 61% lower, pointing to smoother traffic flow than the state level - free-flowing roads make scheduled deliveries highly predictable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Macoupin County, Illinois

Trafficvehicles per day13,618
Trucks21.0%
Average travel time58.6 min
Congestion ratio31.2%
Drivers’ average age47.8 yrs
Drivers’ average income$82,813

A significant share of driving in Macoupin County, Illinois, 37% of vehicle-miles, happens on highways. The average highway carries 13,618 vehicles per day, 396% more than the average non-highway road in the same area, which carries 2,746 vehicles per day.

That comes from just 8% of the monitored road miles: 26 miles in 22 segments, carrying 367,793 vehicle-miles traveled per day (≈134 million per year).

More highway trucks than 72% of counties in Illinois

Highway truck concentration here runs 21% higher than the state average, at 21.0%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

56% of counties in Illinois see a lower highway truck share than Macoupin's 21.0%. By raw truck volume, Macoupin carries more highway trucks than 72% of counties in Illinois.

non-highway traffic icon

Non-highway Traffic in Macoupin County, Illinois

Trafficvehicles per day2,746
Trucks7.5%
Average travel time32.0 min
Congestion ratio7.9%
Drivers’ average age50.6 yrs
Drivers’ average income$76,247

A little more than half of the driving in Macoupin County, Illinois happens on local roads: 63% of all vehicle-miles. The average non-highway road carries 2,746 vehicles per day.

Local roads make up 92% of the monitored road miles (288 miles in 4,323 segments) but carry less than their share of travel: 620,784 vehicle-miles traveled per day (≈227 million per year). About 1 in 13 vehicles on non-highway roads is a truck (7.5%).

Local congestion 62% below the Illinois average

Non-highway roads carry a truck concentration that's 64% lower than the highway network.

At 62% lower than the state level, the non-highway congestion ratio of 7.9% signals easier movement on local roads.

Trip origins here have higher average income than 68% of counties in Illinois. 63% of counties in Illinois have a younger driver population than Macoupin.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Macoupin County vs. Illinois Traffic Comparison

Macoupin County's biggest difference from the Illinois average is its average daily traffic per road, 67% below it. Its truck share, by contrast, is 23% above.

MetricMacoupin CountyIllinois averageDifference
Traffic2,8018,480-67.0%
Truck % (Total Traffic)12.5%10.2%+22.6%
Truck % (Highway)21.0%17.3%+21.1%
Avg. Travel Time32.1 min34.1 min-5.9%

How Macoupin County compares

Macoupin County against nearby counties

Against the 4 nearest areas, Macoupin County is 29.5% less congested and moves 47.6% of the total daily travel; it has the fourth busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Macoupin 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
Macoupin County2,80112.5%988,57732.1 min8.1%
Madison County, Illinois6,92511.1%6,547,56132.1 min18.1%
Jersey County, Illinois3,7789.3%403,93831.4 min10.7%
Greene County, Illinois2,31811.4%229,16835.1 min7.4%
Montgomery County, Illinois2,80215.6%1,134,00933.1 min9.5%
Illinois average8,48010.2%N/A34.1 min20.6%

Macoupin County ranked within Illinois

Macoupin County sits in the bottom quarter of the Illinois field on average travel time, at #77 of 102.

Macoupin County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasureMacoupin CountyIllinois rank
Traffic volume (AADT)2,801#56 of 102
Highway vehicle-miles per day367,793#52 of 82
Truck share on highways21.0%#37 of 82
Highway trucks per day2,857#24 of 82
Average travel time32.1 min#77 of 102
Average driver income$77,361#33 of 102
Average driver age50.1 yrs#38 of 102

Busiest roads in Macoupin County, Illinois

The three busiest roads in Macoupin County average 16,886 vehicles a day, 6.0 times the county average of 2,801 across all its monitored roads.

I 55 is the busiest road, at 28,062 vehicles a day, 5,886 of them trucks (21.0%). That is 2.0 times the next road, 1st South Street (13,864). It tops the truck ranking too, with the most trucks.

I 55 carries longer journeys than most roads here, with a median trip of 58.6 minutes against 32.1 county-wide.

Trucks make up 21.0% of traffic on I 55, against 12.5% across all roads in the county.

Broad Street is busy with cars rather than freight: only 4.1% of its traffic is trucks, against 12.5% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 55Motorway · 28,062vehicles5,886trucks · 21.0%
Road class
Motorway
Congestion ratio
31.2%
Median trip time
58.6 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$82,813

Delays build on I 55: its congestion ratio of 31% over free-flow time is well above the county's 8%.

21st South StreetPrimary road · 13,864vehicles741trucks · 5.3%
Road class
Primary road
Congestion ratio
31.6%
Median trip time
30.9 min
Drivers’ median age
50.1 yrs
Drivers’ average income
$78,281

Travel on 1st South Street's busiest stretch runs 32% over free-flow time, against 8% across the county, so expect slower peak hours.

3Broad StreetPrimary road · 8,733vehicles361trucks · 4.1%
Road class
Primary road
Congestion ratio
21.0%
Median trip time
36.6 min
Drivers’ median age
51.1 yrs
Drivers’ average income
$78,804

Broad Street carries 3.1 times the county average on its busiest stretch, where the median trip lasts 36.6 minutes.

4Main StreetSecondary road · 8,321vehicles365trucks · 4.4%
Road class
Secondary road
Congestion ratio
20.5%
Median trip time
28.7 min
Drivers’ median age
51.4 yrs
Drivers’ average income
$69,441

At 3.0 times the county average, Main Street draws drivers from neighborhoods averaging $69,441 in household income.

5Springfield StreetPrimary road · 8,117vehicles498trucks · 6.1%
Road class
Primary road
Congestion ratio
19.2%
Median trip time
33.9 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$80,525

The busiest stretch of Springfield Street carries 2.9 times the county average; trucks are 6.1% of it, below the county-wide 12.5%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 55Motorway · #1 by traffic28,062vehicles5,886trucks · 21.0%
21st South StreetPrimary road · #2 by traffic13,864vehicles741trucks · 5.3%
3IL 4Primary road · 7,186vehicles531trucks · 7.4%
Road class
Primary road
Congestion ratio
18.9%
Median trip time
30.3 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$85,298

On its busiest stretch, IL 4 carries 2.6 times the county average; trucks are 7.4% of it, below the county-wide 12.5%.

43rd StreetPrimary road · 6,579vehicles509trucks · 7.7%
Road class
Primary road
Congestion ratio
15.5%
Median trip time
31.7 min
Drivers’ median age
48.7 yrs
Drivers’ average income
$71,388

3rd Street peaks at 6,579 vehicles a day, 2.3 times the county average; trucks are 7.7% of it, below the county-wide 12.5%.

5Springfield StreetPrimary road · #5 by traffic8,117vehicles498trucks · 6.1%
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

MacoupinDepartment 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 Macoupin County

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

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