
Total Traffic Volume & Performance in Gallatin County, Montana
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day5,024 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 9.0% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 29.2 min |
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Congestion ratio The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 16.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 38.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $90,275 |
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Our data shows 5,024 vehicles per day on the average road in Gallatin County, Montana, and 2,700,371 vehicle-miles traveled per day (≈986 million per year) across its 629 miles of monitored roads. About 1 in 11 vehicles is a truck, fewer than the 1 in 9 across Montana.
Shorter trips than 98% of counties in Montana
At 5,024 vehicles per day, the average monitored road in Gallatin carries 20% more traffic than the state average of 4,202, suggesting more demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries about 9.5% of Montana's statewide total of vehicle-miles. By volume, Gallatin's 5,024 vehicles per day outpaces 95% of counties in Montana.
Journey times run 19% lower than the state level, at 29.2 minutes on average. Its average travel time of 29.2 minutes is shorter than 98% of counties in Montana.
At 36% higher than the state level, the 16.6% congestion ratio signals more pronounced congestion - expect slower peak-hour deliveries and less predictable arrival times.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Gallatin County, Montana
| Traffic | vehicles per day10,160 |
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| Trucks | 12.4% |
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| Average travel time | 32.4 min |
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| Congestion ratio | 24.9% |
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| Drivers’ average age | 39.1 yrs |
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| Drivers’ average income | $86,814 |
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Travel in Gallatin County, Montana splits roughly evenly, with about half of it (53% of vehicle-miles) on highways. The average highway carries 10,160 vehicles per day, 150% more than the average non-highway road in the same area, which carries 4,060 vehicles per day.
Highways make up 30% of the monitored road miles (189 miles, 1,147 segments), so they carry more than their share: 1,433,180 vehicle-miles traveled per day (≈523 million per year).
That puts Gallatin among the top 3 counties in Montana for highway travel volume.
More highway trucks than 89% of counties in Montana
At 12.4%, highway truck share is 17% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 76% of counties in Montana. By raw truck volume, Gallatin carries more highway trucks than 89% of counties in Montana.

Non-highway Traffic in Gallatin County, Montana
| Traffic | vehicles per day4,060 |
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| Trucks | 5.2% |
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| Average travel time | 28.6 min |
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| Congestion ratio | 15.1% |
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| Drivers’ average age | 38.1 yrs |
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| Drivers’ average income | $92,904 |
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Travel in Gallatin County, Montana splits roughly evenly, with about half of it (47% of vehicle-miles) on local roads. A typical local road sees 4,060 vehicles per day.
Spread over 440 miles and 6,116 segments, 70% of the road network, local roads carry a lighter load per mile: 1,267,192 vehicle-miles traveled per day (≈463 million per year). The truck share on non-highway roads is 5.2%.
The highest driver income of any county in Montana
Non-highway roads carry a truck concentration that's 58% lower than the highway network.
Non-highway congestion (15.1%) runs 25% higher than the state average, pointing to slower local traffic flow.
At $90,275, the average driver income for trips originating here is the highest in Montana. Drivers here also skew toward the lowest median age in Montana, at 38 years.