
Total Traffic Volume & Performance in Jefferson County, Missouri
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day6,329 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 7.0% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 30.6 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. | 17.3% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 47.9 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $84,471 |
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A typical monitored road in Jefferson County, Missouri sees 6,329 vehicles per day, while its 749 miles of monitored roads together handle 6,507,227 vehicle-miles traveled per day (≈2.4 billion per year). Trucks are a smaller part of the mix than across Missouri: 7.0% against 9.8%.
Busier roads than 91% of counties in Missouri
Jefferson's average daily traffic volume is 12% higher than the state average - 6,329 vehicles per day against 5,631 - a factor worth weighing in site selection and logistics planning. Network-wide, Jefferson accounts for about 3.8% of Missouri's statewide total of vehicle-miles. By volume, Jefferson's 6,329 vehicles per day outpaces 91% of counties in Missouri.
The average trip takes 30.6 minutes, on par with the state level. On travel time, Jefferson runs shorter than 72% of counties in Missouri.
The congestion ratio of 17.3% runs slightly lower than the state level (11% lower) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Jefferson County, Missouri
| Traffic | vehicles per day15,296 |
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| Trucks | 8.9% |
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| Average travel time | 35.2 min |
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| Congestion ratio | 38.7% |
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| Drivers’ average age | 48.2 yrs |
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| Drivers’ average income | $83,799 |
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A little more than half of the driving in Jefferson County, Missouri happens on highways: 57% of all vehicle-miles. The average highway carries 15,296 vehicles per day, 164% more than the average non-highway road in the same area, which carries 5,789 vehicles per day.
Highways make up 26% of the monitored road miles (193 miles, 959 segments), so they carry more than their share: 3,726,131 vehicle-miles traveled per day (≈1.4 billion per year).
By highway travel volume, that ranks Jefferson in the top 5 counties in Missouri.
Lower highway truck share than 98% of counties in Missouri
Highway truck concentration here runs 34% lower than the state average, at 8.9%. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.
By truck concentration, highways here trail 98% of counties in Missouri. Jefferson's highway truck count is higher than 61% of counties in Missouri, at roughly 1,364 trucks per day.

Non-highway Traffic in Jefferson County, Missouri
| Traffic | vehicles per day5,789 |
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| Trucks | 4.4% |
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| Average travel time | 30.4 min |
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| Congestion ratio | 16.0% |
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| Drivers’ average age | 47.7 yrs |
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| Drivers’ average income | $85,325 |
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A significant share of driving in Jefferson County, Missouri, 43% of vehicle-miles, happens on local roads. A typical local road sees 5,789 vehicles per day.
Spread over 556 miles and 15,918 segments, 74% of the road network, local roads carry a lighter load per mile: 2,781,096 vehicle-miles traveled per day (≈1.0 billion per year). About 1 in 23 vehicles on non-highway roads is a truck (4.4%).
Drivers from higher-income areas than 94% of counties in Missouri
Non-highway roads carry a truck concentration that's 51% lower than the highway network.
Non-highway congestion (16.0%) runs slightly lower than the state level (14% lower).
Trip origins here have higher average income than 94% of counties in Missouri. The driver population here skews younger than 69% of counties in Missouri.