
Total Traffic Volume & Performance in Phillips County, Montana
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day1,205 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 14.5% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 63.2 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. | 5.0% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 54.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $57,839 |
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Our data shows 1,205 vehicles per day on the average road in Phillips County, Montana, and 93,820 vehicle-miles traveled per day (≈34.2 million per year) across its 109 miles of monitored roads. At 14.5%, the truck share runs above the 11.7% across Montana: about 1 in 7 vehicles.
Longer trips than 96% of counties in Montana
Phillips sees 71% lower average daily traffic volume than the state average (1,205 vehicles per day against 4,202), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 0.3% of Montana's statewide total. Phillips carries less traffic than 69% of counties in Montana.
The average trip takes 63.2 minutes, 75% higher than the state level. Its average travel time of 63.2 minutes is longer than 96% of counties in Montana.
The congestion ratio of 5.0% is 59% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Phillips County, Montana
| Traffic | vehicles per day1,380 |
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| Trucks | 14.3% |
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| Average travel time | 52.7 min |
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| Congestion ratio | 3.4% |
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| Drivers’ average age | 54.0 yrs |
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| Drivers’ average income | $57,123 |
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The vast majority of driving in Phillips County, Montana happens on highways: 84% of all vehicle-miles. The average highway carries 1,380 vehicles per day, 41% more than the average non-highway road in the same area, which carries 976 vehicles per day.
With 56% of the road miles (60 miles in 260 segments), highways punch above their length, carrying 78,563 vehicle-miles traveled per day (≈28.7 million per year).
Fewer highway trucks than 93% of counties in Montana
The concentration of trucks on highways (14.3%) is in line with the state average for similar road classifications. The highway traffic mix is typical for Montana: neither freight- nor commuter-dominated.
Phillips's highway truck share (14.3%) is lower than 52% of counties in Montana. By raw truck volume, Phillips carries fewer highway trucks than 93% of counties in Montana.

Non-highway Traffic in Phillips County, Montana
| Traffic | vehicles per day976 |
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| Trucks | 15.4% |
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| Average travel time | 77.0 min |
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| Congestion ratio | 7.2% |
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| Drivers’ average age | 54.4 yrs |
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| Drivers’ average income | $59,190 |
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Local roads carry a smaller share of travel in Phillips County, Montana, 16% of vehicle-miles; most driving happens on highways. A typical local road sees 976 vehicles per day.
Spread over 48 miles and 198 segments, 44% of the road network, local roads carry a lighter load per mile: 15,257 vehicle-miles traveled per day (≈5.6 million per year). Trucks make up 15.4% of non-highway traffic, about 1 in 6 vehicles.
Drivers from lower-income areas than 84% of counties in Montana
Non-highway roads carry a truck concentration that's 8% higher than the highway network.
Non-highway congestion (7.2%) runs 41% lower than the state average, pointing to smoother local traffic flow.
Trip origins here have lower average income than 84% of counties in Montana. Phillips's median driver age is higher than 75% of counties in Montana.