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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day1,887 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 16.4% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 33.1 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 7.1% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 44.8 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $66,384 |
Our data shows 1,887 vehicles per day on the average road in Calhoun County, South Carolina, and 1,706,516 vehicle-miles traveled per day (≈623 million per year) across its 312 miles of monitored roads. About 1 in 6 vehicles is a truck, well above the 9.5% across South Carolina - a freight-heavy mix.
Calhoun's average daily traffic volume is 73% lower than the state average - 1,887 vehicles per day against 7,040 - suggesting less traffic load per road - very light roads: easy truck access, but little passing trade for roadside retail. Across the whole network, that travel is about 1.2% of South Carolina's statewide total. Calhoun carries less traffic than 96% of counties in South Carolina.
The average trip takes 33.1 minutes, on par with the state level. Its average travel time of 33.1 minutes is shorter than 64% of counties in South Carolina.
At 61% lower than the state level, the 7.1% congestion ratio signals smoother traffic flow - delays are rare enough to plan travel times almost to the minute.
| Traffic | vehicles per day26,180 |
|---|---|
| Trucks | 18.8% |
| Average travel time | 63.1 min |
| Congestion ratio | 53.8% |
| Drivers’ average age | 43.6 yrs |
| Drivers’ average income | $69,725 |
Highways carry most of the traffic in Calhoun County, South Carolina: 78% of all vehicle-miles. The average highway carries 26,180 vehicles per day, 1482% more than the average non-highway road in the same area, which carries 1,654 vehicles per day.
That comes from just 16% of the monitored road miles: 50 miles in 27 segments, carrying 1,323,797 vehicle-miles traveled per day (≈483 million per year).
By highway travel volume, Calhoun outranks 57% of counties in South Carolina.
At 18.8%, highway truck share is 38% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
Calhoun's highway truck share (18.8%) is higher than 79% of counties in South Carolina. 95% of counties in South Carolina see fewer highway trucks per day than Calhoun's roughly 4,932.
| Traffic | vehicles per day1,654 |
|---|---|
| Trucks | 8.0% |
| Average travel time | 32.9 min |
| Congestion ratio | 6.7% |
| Drivers’ average age | 51.8 yrs |
| Drivers’ average income | $59,134 |
At 22% of vehicle-miles, local roads carry a smaller share of the traffic in Calhoun County, South Carolina than highways. A typical local road sees 1,654 vehicles per day.
Spread over 262 miles and 2,818 segments, 84% of the road network, local roads carry a lighter load per mile: 382,719 vehicle-miles traveled per day (≈140 million per year). The truck share on non-highway roads is 8.0%.
Non-highway roads carry a truck concentration that's 57% lower than the highway network.
At 60% lower than the state level, the non-highway congestion ratio of 6.7% signals easier movement on local roads.
Trip origins here have higher average income than 60% of counties in South Carolina. The driver population here skews younger than 89% of counties in South Carolina.
The average daily traffic per road sets Calhoun County apart: 73% below the South Carolina average. Its truck share, by contrast, is 73% above.
| Metric | Calhoun County | South Carolina average | Difference |
|---|---|---|---|
| Traffic | 1,887 | 7,040 | -73.2% |
| Truck % (Total Traffic) | 16.4% | 9.5% | +72.7% |
| Truck % (Highway) | 18.8% | 13.7% | +37.6% |
| Avg. Travel Time | 33.1 min | 33.3 min | -0.4% |
Set against the average of the 4 areas nearest to it, Calhoun County carries 65.8% less traffic on a typical road and is 47.6% less congested; it has the quietest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Calhoun County | 1,887 | 16.4% | 1,706,516 | 33.1 min | 7.1% |
| Orangeburg County, South Carolina | 3,826 | 15.0% | 3,730,403 | 36.1 min | 9.0% |
| Richland County, South Carolina | 9,686 | 8.4% | 10,314,230 | 32.7 min | 20.6% |
| Sumter County, South Carolina | 5,432 | 10.0% | 2,622,822 | 33.8 min | 15.6% |
| Clarendon County, South Carolina | 3,155 | 18.3% | 1,778,904 | 32.5 min | 9.2% |
| South Carolina average | 7,040 | 9.5% | N/A | 33.3 min | 18.2% |
Calhoun County sits in South Carolina's top three on highway truck volume.
| Measure | Calhoun County | South Carolina rank |
|---|---|---|
| Traffic volume (AADT) | 1,887 | #44 of 46 |
| Highway vehicle-miles per day | 1,323,797 | #19 of 43 |
| Truck share on highways | 18.8% | #10 of 43 |
| Highway trucks per day | 4,932 | #3 of 43 |
| Average travel time | 33.1 min | #30 of 46 |
| Average driver income | $66,384 | #19 of 46 |
| Average driver age | 44.8 yrs | #41 of 46 |
Calhoun County ranks #3 of 43 on highway truck volume but #44 of 46 on average daily traffic volume - the two describe the same roads and are worth reading together rather than either on its own.
The three busiest roads in Calhoun County average 22,730 vehicles a day, 12.0 times the county average of 1,887 across all its monitored roads.
I 26 leads with 56,235 vehicles a day, 11,671 of them trucks (20.8%). That is 8.2 times the next road, Saint Matthews Road (6,880). It tops the truck ranking too, with the most trucks.
Trips using I 26 are long: a median of 61.2 minutes against 33.1 county-wide, the mark of a through route.
Harry C Raysor Drive skews older: its drivers' median age is 52.3, compared with 44.8 county-wide.
Few trucks use Saint Matthews Road: 7.5% of its traffic, under half the county's 16.4%.
I 26 is one of the more congested roads here: trips take 59% longer than at free-flow speed, against 7% county-wide.
Saint Matthews Road peaks at 6,880 vehicles a day, 3.6 times the county average; trucks are 7.5% of it, below the county-wide 16.4%.
Columbia Road Northeast carries 2.7 times the county average at its busiest, 470 of them trucks (9.3%, below the county-wide 16.4%).
Harry C Raysor Drive carries 2.7 times the county average on its busiest stretch, where the median trip lasts 32.4 minutes.
At 2.2 times the county average, US 21 draws drivers from neighborhoods averaging $62,839 in household income.
The average monitored road in Calhoun carries 1,887 vehicles per day, 73% less than the South Carolina average of 7,040.
Calhoun carries less traffic than 96% of counties in South Carolina, averaging 1,887 vehicles per day.
Drivers on Calhoun roads have a median age of 45 years, and the median household income of the neighborhoods trips originate from averages $66,384, 10% below the South Carolina average.
Trucks make up about 16.4% of all traffic in Calhoun County, South Carolina, rising to 18.8% on highways, where long-haul freight concentrates.
Approximately 87% of highway traffic and 19% of non-highway traffic consists of vehicles whose trip originates outside Calhoun County, South Carolina. Most highway traffic here starts elsewhere, so the highways serve the wider region more than the local community.
I 26 carries the most, 56,235 vehicles per day on its busiest stretch, followed by Saint Matthews Road (6,880), Columbia Road Northeast (5,074), Harry C Raysor Drive (5,063), US 21 (4,106). Figures are AADT, both directions combined.
I 26, with about 11,671 trucks per day on its busiest stretch, 20.8% of its 56,235 vehicles.
About 56,235 vehicles per day in both directions on its busiest stretch, including 11,671 trucks (20.8%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases
The same traffic breakdown for the areas closest to Calhoun County, South Carolina.
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