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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day3,500 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 14.6% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 34.1 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 10.7% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 48.0 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $71,616 |
Our data shows 3,500 vehicles per day on the average road in Marshall County, Indiana, and 1,407,085 vehicle-miles traveled per day (≈514 million per year) across its 351 miles of monitored roads. Trucks are 14.6% of traffic, more than the 12.1% across Indiana.
At 3,500 vehicles per day, the average monitored road in Marshall carries 39% 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, Marshall accounts for about 0.9% of Indiana's statewide total of vehicle-miles. By volume, Marshall's 3,500 vehicles per day trails 54% of counties in Indiana.
At 34.1 minutes, the average travel time matches the state level closely. On travel time, Marshall runs shorter than 51% of counties in Indiana.
The congestion ratio of 10.7% is 31% lower, pointing to smoother traffic flow than the state level - fewer delays make delivery windows more reliable.
| Traffic | vehicles per day8,375 |
|---|---|
| Trucks | 20.2% |
| Average travel time | 59.0 min |
| Congestion ratio | 18.5% |
| Drivers’ average age | 47.2 yrs |
| Drivers’ average income | $73,230 |
A little more than half of the driving in Marshall County, Indiana happens on highways: 56% of all vehicle-miles. The average highway carries 8,375 vehicles per day, 156% more than the average non-highway road in the same area, which carries 3,271 vehicles per day.
With 26% of the road miles (92 miles in 226 segments), highways punch above their length, carrying 781,741 vehicle-miles traveled per day (≈285 million per year).
62% of counties in Indiana move less traffic on their highways.
At 20.2%, the highway truck share matches the state average for similar road classifications. The highway traffic mix is typical for Indiana: neither freight- nor commuter-dominated.
Marshall's highway truck share (20.2%) is higher than 51% of counties in Indiana. By raw truck volume, Marshall carries fewer highway trucks than 65% of counties in Indiana.
| Traffic | vehicles per day3,271 |
|---|---|
| Trucks | 7.6% |
| Average travel time | 32.9 min |
| Congestion ratio | 10.3% |
| Drivers’ average age | 48.4 yrs |
| Drivers’ average income | $70,725 |
A significant share of driving in Marshall County, Indiana, 44% of vehicle-miles, happens on local roads. The average non-highway road carries 3,271 vehicles per day.
Spread over 259 miles and 4,812 segments, 74% of the road network, local roads carry a lighter load per mile: 625,344 vehicle-miles traveled per day (≈228 million per year). The truck share on non-highway roads is 7.6%.
Compared to highways, non-highway routes see 63% fewer trucks by share.
At 32% lower than the state level, the non-highway congestion ratio of 10.3% signals easier movement on local roads.
58% of counties in Indiana see higher average driver income among trip origins than Marshall. Marshall's median driver age is higher than 52% of counties in Indiana.
The average daily traffic per road sets Marshall County apart: 39% below the Indiana average. Its truck share, by contrast, is 21% above.
| Metric | Marshall County | Indiana average | Difference |
|---|---|---|---|
| Traffic | 3,500 | 5,704 | -38.6% |
| Truck % (Total Traffic) | 14.6% | 12.1% | +20.8% |
| Truck % (Highway) | 20.2% | 19.6% | +3.4% |
| Avg. Travel Time | 34.1 min | 33.5 min | +1.7% |
Marshall County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the second busiest roads of the five.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Marshall County | 3,500 | 14.6% | 1,407,085 | 34.1 min | 10.7% |
| Starke County, Indiana | 3,356 | 14.3% | 458,950 | 33.8 min | 7.9% |
| Fulton County, Indiana | 2,844 | 12.6% | 492,197 | 32.2 min | 8.5% |
| St. Joseph County, Indiana | 6,991 | 12.8% | 5,428,162 | 34.9 min | 16.1% |
| Kosciusko County, Indiana | 3,422 | 10.0% | 1,694,853 | 36.8 min | 9.8% |
| Indiana average | 5,704 | 12.1% | N/A | 33.5 min | 15.6% |
On all 7 measures below, Marshall County lands in the middle of the Indiana field rather than at either end.
| Measure | Marshall County | Indiana rank |
|---|---|---|
| Traffic volume (AADT) | 3,500 | #50 of 92 |
| Highway vehicle-miles per day | 781,741 | #31 of 79 |
| Truck share on highways | 20.2% | #39 of 79 |
| Highway trucks per day | 1,696 | #52 of 79 |
| Average travel time | 34.1 min | #47 of 92 |
| Average driver income | $71,616 | #54 of 92 |
| Average driver age | 48.0 yrs | #45 of 92 |
Traffic concentrates on a few corridors: the three busiest roads average 15,725 vehicles a day, against 3,500 on the average road in Marshall County.
US 31 is the busiest road, at 19,099 vehicles a day, 4,040 of them trucks (21.1%). It tops the truck ranking too, with the most trucks.
US 30 carries longer journeys than most roads here, with a median trip of 59.6 minutes against 34.1 county-wide.
Michigan Street is busy with cars rather than freight: only 3.6% of its traffic is trucks, against 14.6% county-wide.
Delays build on US 31: its congestion ratio of 22% over free-flow time is well above the county's 11%.
The busiest stretch of US 30 carries 4.3 times the county average; trucks are 20.7% of it, above the county-wide 14.6%.
On its busiest stretch, Michigan Street carries 3.7 times the county average; trucks are 3.6% of it, below the county-wide 14.6%.
Travel on Oak Road's busiest stretch runs 22% over free-flow time, against 11% across the county, so expect slower peak hours.
Jefferson Street peaks at 8,657 vehicles a day, 2.5 times the county average; trucks are 3.6% of it, below the county-wide 14.6%.
Grand Army of the Republic Highway is busy by local standards, at 88% more than the county average on its busiest stretch; trucks are 11.8% of it, below the county-wide 14.6%.
Plymouth Street carries 2.3 times the county average at its busiest, 540 of them trucks (6.8%, below the county-wide 14.6%).
The average monitored road in Marshall carries 3,500 vehicles per day, 39% less than the Indiana average of 5,704.
Marshall carries fewer highway trucks by raw volume than 65% of counties in Indiana, at roughly 1,696 per day.
Drivers on Marshall roads have a median age of 48 years, older than the Indiana average of 46, and the median household income of the neighborhoods trips originate from averages $71,616, 12% below the Indiana average.
Weekday traffic has two busy windows: AM peak 7:00 AM–9:00 AM and PM peak 4:00 PM–6:00 PM - about 73% above the daily average.
Approximately 34% of highway traffic and 9% of non-highway traffic consists of vehicles whose trip originates outside Marshall County, Indiana. A sizeable share of highway traffic comes from outside, mixed with local trips on the same roads.
US 31 carries the most, 19,099 vehicles per day on its busiest stretch, followed by US 30 (15,026), Michigan Street (13,050), Oak Road (9,152), Jefferson Street (8,657). Figures are AADT, both directions combined.
US 31, with about 4,040 trucks per day on its busiest stretch, 21.1% of its 19,099 vehicles.
About 19,099 vehicles per day in both directions on its busiest stretch, including 4,040 trucks (21.1%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases
The same traffic breakdown for the areas closest to Marshall County, Indiana.
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