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Traffic heat map of LaGrange County, Indiana: 347 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Indiana Toll Road and US 20

LaGrange County, Indiana Traffic Counts

Our LaGrange County, Indiana traffic data covers 6,055 road segments over 347 road miles, with an average segment of just 303 ft. Its highways carry the highest truck share of any county in Indiana, 42.1%. 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
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Total Traffic Volume & Performance in LaGrange County, Indiana

Traffic

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

vehicles per day2,871
Trucks

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

25.8%
Average travel time

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

42.4 min
Congestion ratio

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

9.9%
Drivers’ average age

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

44.8 yrs
Drivers’ average income

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

$83,550

A typical monitored road in LaGrange County, Indiana sees 2,871 vehicles per day, while its 347 miles of monitored roads together handle 1,461,502 vehicle-miles traveled per day (≈533 million per year). Freight weighs heavily here: trucks are 25.8% of traffic, against 12.1% across Indiana.

Longer trips than 99% of counties in Indiana

At 2,871 vehicles per day, the average monitored road in LaGrange carries 50% less traffic than the state average of 5,704, suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Network-wide, LaGrange accounts for about 0.9% of Indiana's statewide total of vehicle-miles. LaGrange carries less traffic than 71% of counties in Indiana.

Journey times run 26% higher than the state level, at 42.4 minutes on average. 99% of counties in Indiana have a shorter average travel time than LaGrange's 42.4 minutes.

Congestion runs 37% lower than the state level, at a ratio of 9.9%, which means smoother traffic flow - travel times are easy to plan around for scheduled deliveries.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in LaGrange County, Indiana

Trafficvehicles per day12,503
Trucks42.1%
Average travel time80.5 min
Congestion ratio27.8%
Drivers’ average age48.6 yrs
Drivers’ average income$84,174

Highways carry about half of all travel in LaGrange County, Indiana, 47% of vehicle-miles. The average highway carries 12,503 vehicles per day, 347% more than the average non-highway road in the same area, which carries 2,797 vehicles per day.

That comes from just 15% of the monitored road miles: 52 miles in 46 segments, carrying 683,176 vehicle-miles traveled per day (≈249 million per year).

By highway travel volume, LaGrange outranks 55% of counties in Indiana.

The highest highway truck share of any county in Indiana

At 42.1%, highway truck share is 115% higher than the state average. That marks LaGrange as a major freight corridor, where highway access is what logistics operators compete on.

At 42.1%, LaGrange's highway truck concentration is the highest in Indiana. By raw truck volume, LaGrange carries more highway trucks than 94% of counties in Indiana.

non-highway traffic icon

Non-highway Traffic in LaGrange County, Indiana

Trafficvehicles per day2,797
Trucks11.5%
Average travel time42.1 min
Congestion ratio9.7%
Drivers’ average age44.6 yrs
Drivers’ average income$83,445

Local roads carry about half of all travel in LaGrange County, Indiana, 53% of vehicle-miles. On the average non-highway road, that comes to 2,797 vehicles per day.

Local roads make up 85% of the monitored road miles (295 miles in 6,009 segments) but carry less than their share of travel: 778,326 vehicle-miles traveled per day (≈284 million per year). About 1 in 9 vehicles on non-highway roads is a truck (11.5%).

Younger drivers than 90% of counties in Indiana

Compared to highways, non-highway routes see 73% fewer trucks by share.

Non-highway congestion (9.7%) runs 36% lower than the state average, pointing to smoother local traffic flow.

86% of counties in Indiana see lower average driver income among trip origins than LaGrange. 90% of counties in Indiana have an older driver population than LaGrange.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In LaGrange County, Indiana, traffic is spread evenly through the day, with the busiest hour carrying only about 6%.

LaGrange County vs. Indiana Traffic Comparison

LaGrange County's biggest difference from the Indiana average is its highway truck share, 115% above it. Its truck share is also 113% above.

MetricLaGrange CountyIndiana averageDifference
Traffic2,8715,704-49.7%
Truck % (Total Traffic)25.8%12.1%+113.3%
Truck % (Highway)42.1%19.6%+115.3%
Avg. Travel Time42.4 min33.5 min+26.5%

How LaGrange County compares

LaGrange County has a higher truck share than any nearby county

Compared with its 4 closest neighbours, LaGrange County runs 13.1 percentage points more truck traffic; it has the fourth busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.

LaGrange County and the 4 nearest county-level areas by centroid distance, with the Indiana average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
LaGrange County2,87125.8%1,461,50242.4 min9.9%
Noble County, Indiana2,6098.3%997,29337.6 min11.2%
St. Joseph County, Michigan3,4797.5%1,323,92436.2 min10.8%
Steuben County, Indiana3,60020.7%1,616,61134.9 min12.0%
Elkhart County, Indiana5,75614.3%5,039,78933.0 min14.7%
Indiana average5,70412.1%N/A33.5 min15.6%

LaGrange County ranked within Indiana

No other county-level area in Indiana records a higher truck share on highways than LaGrange County.

LaGrange County ranked among 92 county-level areas in Indiana (1 = highest); measures without data in every county rank a smaller field, down to 79.
MeasureLaGrange CountyIndiana rank
Traffic volume (AADT)2,871#66 of 92
Highway vehicle-miles per day683,176#36 of 79
Truck share on highways42.1%#1 of 79
Highway trucks per day5,270#6 of 79
Average travel time42.4 min#2 of 92
Average driver income$83,550#14 of 92
Average driver age44.8 yrs#83 of 92

The two ends of this table sit far apart: #1 of 79 on truck share on highways, against #83 of 92 on average driver age.

Busiest roads in LaGrange County, Indiana

On their busiest stretches, the three busiest roads in LaGrange County carry 14,907 vehicles a day on average, 5.2 times the typical road in the county (2,871).

Indiana Toll Road leads with 26,179 vehicles a day, 11,034 of them trucks (42.1%). No other road comes close: US 20, in second place, carries 9,382. It also carries the most trucks.

Indiana Toll Road carries longer journeys than most roads here, with a median trip of 80.5 minutes against 42.4 county-wide.

Trucks make up 42.1% of traffic on Indiana Toll Road, against 25.8% across all roads in the county.

SR 9 is busy with cars rather than freight: only 11.7% of its traffic is trucks, against 25.8% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Indiana Toll RoadMotorway · 26,179vehicles11,034trucks · 42.1%
Road class
Motorway
Congestion ratio
27.8%
Median trip time
80.5 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$84,174

Indiana Toll Road is one of the more congested roads here: trips take 28% longer than at free-flow speed, against 10% county-wide.

2US 20Primary road · 9,382vehicles1,343trucks · 14.3%
Road class
Primary road
Congestion ratio
22.3%
Median trip time
47.5 min
Drivers’ median age
44.6 yrs
Drivers’ average income
$81,205

Delays build on US 20: its congestion ratio of 22% over free-flow time is well above the county's 10%.

3SR 9Primary road · 9,158vehicles1,072trucks · 11.7%
Road class
Primary road
Congestion ratio
20.5%
Median trip time
35.0 min
Drivers’ median age
44.7 yrs
Drivers’ average income
$78,346

The busiest stretch of SR 9 carries 3.2 times the county average; trucks are 11.7% of it, below the county-wide 25.8%.

4Detroit StreetPrimary road · 8,025vehicles911trucks · 11.4%
Road class
Primary road
Congestion ratio
17.5%
Median trip time
33.2 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$78,580

On its busiest stretch, Detroit Street carries 2.8 times the county average; trucks are 11.4% of it, below the county-wide 25.8%.

5SR 5Secondary road · 6,772vehicles761trucks · 11.2%
Road class
Secondary road
Congestion ratio
16.0%
Median trip time
50.6 min
Drivers’ median age
42.1 yrs
Drivers’ average income
$86,866

SR 5 peaks at 6,772 vehicles a day, 2.4 times the county average; trucks are 11.2% of it, below the county-wide 25.8%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Indiana Toll RoadMotorway · #1 by traffic26,179vehicles11,034trucks · 42.1%
2US 20Primary road · #2 by traffic9,382vehicles1,343trucks · 14.3%
3SR 9Primary road · #3 by traffic9,158vehicles1,072trucks · 11.7%
4Detroit StreetPrimary road · #4 by traffic8,025vehicles911trucks · 11.4%
5State Road 120Primary road · 5,440vehicles842trucks · 15.5%
Road class
Primary road
Congestion ratio
14.2%
Median trip time
44.5 min
Drivers’ median age
45.6 yrs
Drivers’ average income
$84,861

State Road 120 is busy by local standards, at 89% more than the county average on its busiest stretch; trucks are 15.5% of it, below the county-wide 25.8%.

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

LaGrangeDepartment 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 LaGrange County

The same traffic breakdown for the areas closest to LaGrange County, Indiana.

Need segment-level traffic data?

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