
Total Traffic Volume & Performance in Greenville County, South Carolina
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day10,909 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 6.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 34.2 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. | 21.7% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 45.2 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $82,955 |
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Our data shows 10,909 vehicles per day on the average road in Greenville County, South Carolina, and 11,852,078 vehicle-miles traveled per day (≈4.3 billion per year) across its 1,090 miles of monitored roads. About 1 in 16 vehicles is a truck, fewer than the 1 in 11 across South Carolina.
Busier roads than 96% of counties in South Carolina
Greenville sees 55% higher average daily traffic volume than the state average (10,909 vehicles per day against 7,040), 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 8.1% of South Carolina's statewide total of vehicle-miles. Greenville carries more traffic than 96% of counties in South Carolina.
Journey times here (34.2 minutes on average) closely track the state level. Its average travel time of 34.2 minutes is longer than 58% of counties in South Carolina.
Congestion runs 19% higher than the state level, at a ratio of 21.7%, which means more pronounced congestion - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Greenville County, South Carolina
| Traffic | vehicles per day23,201 |
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| Trucks | 9.7% |
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| Average travel time | 39.5 min |
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| Congestion ratio | 32.3% |
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| Drivers’ average age | 45.4 yrs |
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| Drivers’ average income | $78,141 |
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A significant share of driving in Greenville County, South Carolina, 40% of vehicle-miles, happens on highways. The average highway carries 23,201 vehicles per day, 134% more than the average non-highway road in the same area, which carries 9,897 vehicles per day.
With 19% of the road miles (208 miles in 2,846 segments), highways punch above their length, carrying 4,776,204 vehicle-miles traveled per day (≈1.7 billion per year).
No more than 4 other counties in South Carolina move more traffic on their highways.
Lower highway truck share than 81% of counties in South Carolina
The concentration of trucks on highways (9.7%) is 29% 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.
81% of counties in South Carolina see a higher highway truck share than Greenville's 9.7%. Greenville's highway truck count is higher than 55% of counties in South Carolina, at roughly 2,244 trucks per day.

Non-highway Traffic in Greenville County, South Carolina
| Traffic | vehicles per day9,897 |
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| Trucks | 4.2% |
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| Average travel time | 33.8 min |
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| Congestion ratio | 20.8% |
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| Drivers’ average age | 45.2 yrs |
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| Drivers’ average income | $85,589 |
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A little more than half of the driving in Greenville County, South Carolina happens on local roads: 60% of all vehicle-miles. The average non-highway road carries 9,897 vehicles per day.
Spread over 882 miles and 34,558 segments, 81% of the road network, local roads carry a lighter load per mile: 7,075,874 vehicle-miles traveled per day (≈2.6 billion per year). About 1 in 24 vehicles on non-highway roads is a truck (4.2%).
Drivers from higher-income areas than 91% of counties in South Carolina
The concentration of trucks on non-highway roads is 57% lower than on highways.
Non-highway congestion (20.8%) runs 23% higher than the state average, pointing to slower local traffic flow.
Trip origins here have higher average income than 91% of counties in South Carolina. 84% of counties in South Carolina have an older driver population than Greenville.