
Total Traffic Volume & Performance in Flathead County, Montana
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,432 |
|---|
Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.3% |
|---|
Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 35.8 min |
|---|
Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 16.4% |
|---|
Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 48.5 yrs |
|---|
Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $74,029 |
|---|
Our data shows 6,432 vehicles per day on the average road in Flathead County, Montana, and 2,417,955 vehicle-miles traveled per day (≈883 million per year) across its 545 miles of monitored roads. Traffic here is mostly passenger cars: only 6.3% trucks, against 11.7% across Montana.
Busier roads than 96% of counties in Montana
Flathead sees 53% higher average daily traffic volume than the state average (6,432 vehicles per day against 4,202), suggesting more demand on each road - heavy exposure for roadside retail, and tight road space for deliveries. In total volume terms, its road network carries about 8.5% of Montana's statewide total of vehicle-miles. By volume, Flathead's 6,432 vehicles per day outpaces 96% of counties in Montana.
The average trip takes 35.8 minutes, on par with the state level. Its average travel time of 35.8 minutes is shorter than 75% of counties in Montana.
The congestion ratio of 16.4% is 34% higher, pointing to more pronounced congestion than the state level - a factor for delivery windows and signal timing.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Flathead County, Montana
| Traffic | vehicles per day9,697 |
|---|
| Trucks | 7.4% |
|---|
| Average travel time | 30.4 min |
|---|
| Congestion ratio | 23.6% |
|---|
| Drivers’ average age | 48.9 yrs |
|---|
| Drivers’ average income | $74,992 |
|---|
A significant share of driving in Flathead County, Montana, 42% of vehicle-miles, happens on highways. The average highway carries 9,697 vehicles per day, 72% more than the average non-highway road in the same area, which carries 5,624 vehicles per day.
Highways make up 26% of the monitored road miles (139 miles, 1,424 segments), so they carry more than their share: 1,015,937 vehicle-miles traveled per day (≈371 million per year).
That puts Flathead among the top 5 counties in Montana for highway travel volume.
The lowest highway truck share of any county in Montana
At 7.4%, highway truck share is 50% lower than the state average. Highways here carry mainly commuter and local trips, with little through freight.
Flathead also posts the lowest highway truck share in Montana - 7.4%. By raw truck volume, Flathead carries more highway trucks than 67% of counties in Montana.

Non-highway Traffic in Flathead County, Montana
| Traffic | vehicles per day5,624 |
|---|
| Trucks | 5.4% |
|---|
| Average travel time | 37.1 min |
|---|
| Congestion ratio | 14.6% |
|---|
| Drivers’ average age | 48.3 yrs |
|---|
| Drivers’ average income | $73,510 |
|---|
Local roads carry more than half of all travel in Flathead County, Montana (58% of vehicle-miles). The average non-highway road carries 5,624 vehicles per day.
Spread over 406 miles and 5,753 segments, 74% of the road network, local roads carry a lighter load per mile: 1,402,018 vehicle-miles traveled per day (≈512 million per year). The truck share on non-highway roads is 5.4%.
Drivers from higher-income areas than 82% of counties in Montana
Compared to highways, non-highway routes see 27% fewer trucks by share.
Non-highway congestion (14.6%) runs 20% higher than the state average, pointing to slower local traffic flow.
82% of counties in Montana see lower average driver income among trip origins than Flathead. 69% of counties in Montana have an older driver population than Flathead.