
Total Traffic Volume & Performance in St. Louis County, Minnesota
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day3,134 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.8% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 31.7 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. | 9.8% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.5 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $73,385 |
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A typical monitored road in St. Louis County, Minnesota sees 3,134 vehicles per day, while its 1,962 miles of monitored roads together handle 4,889,894 vehicle-miles traveled per day (≈1.8 billion per year). About 1 in 15 vehicles is a truck, fewer than the 1 in 12 across Minnesota.
Busier roads than 86% of counties in Minnesota
St. Louis's average daily traffic volume is 8% lower than the state average - 3,134 vehicles per day against 3,404. Network-wide, St. Louis accounts for about 3.5% of Minnesota's statewide total of vehicle-miles. By volume, St. Louis's 3,134 vehicles per day outpaces 86% of counties in Minnesota.
At 31.7 minutes, the average travel time matches the state level closely. On travel time, St. Louis runs shorter than 73% of counties in Minnesota.
Congestion is somewhat lower than the state level, at a ratio of 9.8% (7% lower).
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in St. Louis County, Minnesota
| Traffic | vehicles per day7,203 |
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| Trucks | 8.3% |
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| Average travel time | 33.6 min |
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| Congestion ratio | 17.7% |
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| Drivers’ average age | 46.1 yrs |
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| Drivers’ average income | $71,772 |
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Travel in St. Louis County, Minnesota splits roughly evenly, with about half of it (48% of vehicle-miles) on highways. The average highway carries 7,203 vehicles per day, 177% more than the average non-highway road in the same area, which carries 2,600 vehicles per day.
Highways make up 23% of the monitored road miles (450 miles, 1,989 segments), so they carry more than their share: 2,338,636 vehicle-miles traveled per day (≈854 million per year).
By highway travel volume, St. Louis outranks 92% of counties in Minnesota.
Lower highway truck share than 90% of counties in Minnesota
The concentration of trucks on highways (8.3%) is 19% lower than the state average for similar road classifications. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 90% of counties in Minnesota. St. Louis's highway truck count is lower than 71% of counties in Minnesota, at roughly 598 trucks per day.

Non-highway Traffic in St. Louis County, Minnesota
| Traffic | vehicles per day2,600 |
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| Trucks | 5.5% |
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| Average travel time | 31.4 min |
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| Congestion ratio | 8.8% |
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| Drivers’ average age | 44.6 yrs |
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| Drivers’ average income | $74,600 |
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Travel in St. Louis County, Minnesota splits roughly evenly, with about half of it (52% of vehicle-miles) on local roads. On the average non-highway road, that comes to 2,600 vehicles per day.
Local roads make up 77% of the monitored road miles (1,512 miles in 15,160 segments) but carry less than their share of travel: 2,551,258 vehicle-miles traveled per day (≈931 million per year). About 1 in 18 vehicles on non-highway roads is a truck (5.5%).
Younger drivers than 77% of counties in Minnesota
Compared to highways, non-highway routes see 34% fewer trucks by share.
Non-highway congestion (8.8%) runs slightly lower than the state level (10% lower).
St. Louis's average driver income is lower than 59% of counties in Minnesota. The driver population here skews younger than 77% of counties in Minnesota.