Need segment-level traffic data?

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

Get insights →
Traffic heat map of Putnam County, Illinois: 84 miles of roads shaded from blue (light) to red (heavy traffic), busiest on IL 29 and IL 71

Putnam County, Illinois Traffic Counts

Our Putnam County, Illinois traffic data covers 586 road segments over 84 road miles, with an average segment of just 753 ft. The average road here carries 1,870 vehicles a day, 78% less than the Illinois average of 8,480. 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
Find my place
total traffic icon

Total Traffic Volume & Performance in Putnam County, Illinois

Traffic

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

vehicles per day1,870
Trucks

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

8.2%
Average travel time

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

30.6 min
Congestion ratio

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

6.6%
Drivers’ average age

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

53.2 yrs
Drivers’ average income

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

$77,135

The average monitored road in Putnam County, Illinois carries 1,870 vehicles per day. Across its 84 miles of monitored roads, that adds up to 169,376 vehicle-miles traveled per day (≈61.8 million per year). Trucks are a smaller part of the mix than across Illinois: 8.2% against 10.2%.

Shorter trips than 93% of counties in Illinois

Putnam's average daily traffic volume is 78% lower than the state average - 1,870 vehicles per day against 8,480 - suggesting less traffic load per road - quiet roads that suit freight movement more than drive-by retail. In total volume terms, its road network carries less than 0.1% of Illinois's statewide total of vehicle-miles. By volume, Putnam's 1,870 vehicles per day trails 88% of counties in Illinois.

The average trip takes 30.6 minutes, 10% lower than the state level. On travel time, Putnam runs shorter than 93% of counties in Illinois.

Congestion runs 68% lower than the state level, at a ratio of 6.6%, which means 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 Putnam County, Illinois

Trafficvehicles per day1,373
Trucks20.8%
Average travel time30.3 min
Congestion ratio4.3%
Drivers’ average age52.4 yrs
Drivers’ average income$73,035

With 3% of vehicle-miles, highways play a minor role in how Putnam County, Illinois travels. The average highway carries 1,373 vehicles per day, 27% less than the average non-highway road in the same area, which carries 1,879 vehicles per day.

Highways make up 5% of the monitored road miles (4 miles in 10 segments) but carry less than their share of travel: 4,964 vehicle-miles traveled per day (≈1.8 million per year).

The fewest highway trucks of any county in Illinois

At 20.8%, highway truck share is 20% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.

53% of counties in Illinois see a lower highway truck share than Putnam's 20.8%. By raw volume, Putnam carries the lowest number of highway trucks in Illinois - roughly 257 trucks per day.

non-highway traffic icon

Non-highway Traffic in Putnam County, Illinois

Trafficvehicles per day1,879
Trucks7.8%
Average travel time30.7 min
Congestion ratio6.6%
Drivers’ average age53.2 yrs
Drivers’ average income$77,265

Local roads carry nearly all of the traffic in Putnam County, Illinois, 97% of all vehicle-miles. On the average non-highway road, that comes to 1,879 vehicles per day.

Local roads also make up about 95% of the monitored road miles: 80 miles in 576 segments, together carrying 164,411 vehicle-miles traveled per day (≈60.0 million per year). The truck share on non-highway roads is 7.8%.

Older drivers than 94% of counties in Illinois

Non-highway roads carry a truck concentration that's 63% lower than the highway network.

Non-highway congestion (6.6%) runs 68% lower than the state average, pointing to smoother local traffic flow.

66% of counties in Illinois see lower average driver income among trip origins than Putnam. Putnam's median driver age is higher than 94% of counties in Illinois.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Putnam County vs. Illinois Traffic Comparison

Putnam County's biggest difference from the Illinois average is its average daily traffic per road, 78% below it. Its highway truck share, by contrast, is 20% above.

MetricPutnam CountyIllinois averageDifference
Traffic1,8708,480-77.9%
Truck % (Total Traffic)8.2%10.2%-19.8%
Truck % (Highway)20.8%17.3%+20.0%
Avg. Travel Time30.6 min34.1 min-10.2%

How Putnam County compares

Putnam County against nearby counties

Set against the average of the 4 areas nearest to it, Putnam County moves 12.5% of the total daily travel and runs 8.5 percentage points less truck traffic; it has the fourth busiest roads of the five.

Putnam 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
Putnam County1,8708.2%169,37630.6 min6.6%
Marshall County, Illinois1,93117.2%479,10838.7 min6.6%
Bureau County, Illinois2,27323.2%1,346,25230.5 min8.3%
LaSalle County, Illinois3,38817.1%3,463,08831.8 min11.0%
Stark County, Illinois1,2498.9%123,74736.7 min4.3%
Illinois average8,48010.2%N/A34.1 min20.6%

Putnam County ranked within Illinois

Putnam County records the lowest highway travel volume and highway truck volume in Illinois.

Putnam County ranked among 102 county-level areas in Illinois (1 = highest); measures without data in every county rank a smaller field, down to 82.
MeasurePutnam CountyIllinois rank
Traffic volume (AADT)1,870#90 of 102
Highway vehicle-miles per day4,964#82 of 82
Truck share on highways20.8%#39 of 82
Highway trucks per day286#82 of 82
Average travel time30.6 min#95 of 102
Average driver income$77,135#35 of 102
Average driver age53.2 yrs#7 of 102

The two ends of this table sit far apart: #7 of 102 on average driver age, against #82 of 82 on highway travel volume.

Busiest roads in Putnam County, Illinois

Traffic concentrates on a few corridors: the three busiest roads average 3,992 vehicles a day, against 1,870 on the average road in Putnam County.

IL 29 is the busiest road, at 4,283 vehicles a day, 437 of them trucks (10.2%). I 180 carries the most trucks on the list, 559 a day (21.0% of its traffic), although it is not among the 5 busiest roads overall.

Freight stands out on I 180: trucks are 21.0% of the traffic there, against 8.2% county-wide.

Trips using County Road 100 are long: a median of 54.6 minutes against 30.6 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1IL 29Primary road · 4,283vehicles437trucks · 10.2%
Road class
Primary road
Congestion ratio
9.8%
Median trip time
39.1 min
Drivers’ median age
54.8 yrs
Drivers’ average income
$70,257

IL 29 carries 2.3 times the county average on its busiest stretch, where the median trip lasts 39.1 minutes.

2IL 71Secondary road · 3,996vehicles281trucks · 7.0%
Road class
Secondary road
Congestion ratio
8.9%
Median trip time
28.4 min
Drivers’ median age
53.5 yrs
Drivers’ average income
$74,181

At 2.1 times the county average, IL 71 draws drivers from neighborhoods averaging $74,181 in household income.

3North StreetSecondary road · 3,698vehicles291trucks · 7.9%
Road class
Secondary road
Congestion ratio
8.2%
Median trip time
50.5 min
Drivers’ median age
52.2 yrs
Drivers’ average income
$81,939

Drivers on North Street are on long journeys, a median 50.5 minutes against 30.6 county-wide: a through route more than a local street.

4County Road 100Secondary road · 3,651vehicles303trucks · 8.3%
Road class
Secondary road
Congestion ratio
8.7%
Median trip time
54.6 min
Drivers’ median age
52.4 yrs
Drivers’ average income
$80,751

The busiest stretch of County Road 100 carries 2.0 times the county average; trucks are 8.3% of it, in line with the county-wide 8.2%.

5County Highway 16Secondary road · 3,404vehicles163trucks · 4.8%
Road class
Secondary road
Congestion ratio
7.5%
Median trip time
27.5 min
Drivers’ median age
53.0 yrs
Drivers’ average income
$70,751

County Highway 16 carries 82% more than the county average on its busiest stretch, where the median trip lasts 27.5 minutes.

Ranked by trucks per day

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1I 180Motorway · 2,667vehicles559trucks · 21.0%
Road class
Motorway
Congestion ratio
2.6%
Median trip time
33.4 min
Drivers’ median age
51.7 yrs
Drivers’ average income
$73,215

At 43% more than the county average, I 180 draws drivers from neighborhoods averaging $73,215 in household income.

2IL 29Primary road · #1 by traffic4,283vehicles437trucks · 10.2%
3County Road 100Secondary road · #4 by traffic3,651vehicles303trucks · 8.3%
4North StreetSecondary road · #3 by traffic3,698vehicles291trucks · 7.9%
5IL 71Secondary road · #2 by traffic3,996vehicles281trucks · 7.0%
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

PutnamDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Putnam County

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

Need segment-level traffic data?

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