
Total Traffic Volume & Performance in Richland County, South Carolina
Traffic The average number of vehicles that travel each day over any road in the road network. | vehicles per day9,686 |
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Trucks The percentage of the total traffic volume composed of heavy vehicles. | 8.4% |
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Average travel time The average time of travel averaged among all vehicles traveling on the road network. | 32.7 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. | 20.6% |
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Drivers’ average age Average age of residents in the geographic areas where the vehicle trips originated. | 42.1 yrs |
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Drivers’ average income Average income of residents in the geographic areas where the vehicle trips originated. | $79,896 |
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Our data shows 9,686 vehicles per day on the average road in Richland County, South Carolina, and 10,314,230 vehicle-miles traveled per day (≈3.8 billion per year) across its 895 miles of monitored roads. Trucks are 8.4% of traffic, close to the 9.5% across South Carolina.
Busier roads than 91% of counties in South Carolina
At 9,686 vehicles per day, the average monitored road in Richland carries 38% more traffic than the state average of 7,040, suggesting more demand on each road - a busier backdrop for retail sites, at the cost of slower access. Network-wide, Richland accounts for about 7.0% of South Carolina's statewide total of vehicle-miles. Richland carries more traffic than 91% of counties in South Carolina.
At 32.7 minutes, the average travel time matches the state level closely. On travel time, Richland runs shorter than 78% of counties in South Carolina.
The congestion ratio of 20.6% runs slightly higher than the state level (13% higher) - crucial for traffic control improvement and logistics planning.
Highway vs. Non-Highway Traffic Analysis

Highway Traffic in Richland County, South Carolina
| Traffic | vehicles per day24,745 |
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| Trucks | 11.9% |
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| Average travel time | 40.0 min |
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| Congestion ratio | 43.2% |
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| Drivers’ average age | 43.3 yrs |
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| Drivers’ average income | $77,220 |
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Travel in Richland County, South Carolina splits roughly evenly, with about half of it (54% of vehicle-miles) on highways. The average highway carries 24,745 vehicles per day, 174% more than the average non-highway road in the same area, which carries 9,027 vehicles per day.
With 21% of the road miles (192 miles in 929 segments), highways punch above their length, carrying 5,545,837 vehicle-miles traveled per day (≈2.0 billion per year).
By highway travel volume, that ranks Richland in the top 3 counties in South Carolina.
More highway trucks than 79% of counties in South Carolina
At 11.9%, highway truck share is 13% lower than the state average. The highway traffic mix is typical for South Carolina: neither freight- nor commuter-dominated.
69% of counties in South Carolina see a higher highway truck share than Richland's 11.9%. Richland's highway truck count is higher than 79% of counties in South Carolina, at roughly 2,955 trucks per day.

Non-highway Traffic in Richland County, South Carolina
| Traffic | vehicles per day9,027 |
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| Trucks | 4.2% |
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| Average travel time | 32.3 min |
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| Congestion ratio | 19.6% |
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| Drivers’ average age | 41.5 yrs |
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| Drivers’ average income | $82,058 |
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Travel in Richland County, South Carolina splits roughly evenly, with about half of it (46% of vehicle-miles) on local roads. A typical local road sees 9,027 vehicles per day.
Local roads make up 79% of the monitored road miles (703 miles in 21,233 segments) but carry less than their share of travel: 4,768,393 vehicle-miles traveled per day (≈1.7 billion per year). About 1 in 24 vehicles on non-highway roads is a truck (4.2%).
The youngest drivers of any county in South Carolina
Compared to highways, non-highway routes see 64% fewer trucks by share.
At 16% higher than the state level, the non-highway congestion ratio of 19.6% signals more friction on local roads.
87% of counties in South Carolina see lower average driver income among trip origins than Richland. Richland has the lowest median driver age in South Carolina - 42 years.