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TrafficThe average number of vehicles that travel each day over any road in the road network. | vehicles per day2,971 |
|---|---|
TrucksThe percentage of the total traffic volume composed of heavy vehicles. | 15.7% |
Average travel timeThe average time of travel averaged among all vehicles traveling on the road network. | 35.6 min |
Congestion ratioThe rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network. | 7.4% |
Drivers’ average ageAverage age of residents in the geographic areas where the vehicle trips originated. | 46.2 yrs |
Drivers’ average incomeAverage income of residents in the geographic areas where the vehicle trips originated. | $64,437 |
A typical monitored road in Chester County, South Carolina sees 2,971 vehicles per day, while its 413 miles of monitored roads together handle 1,901,344 vehicle-miles traveled per day (≈694 million per year). About 1 in 6 vehicles is a truck, well above the 9.5% across South Carolina - a freight-heavy mix.
Chester sees 58% lower average daily traffic volume than the state average (2,971 vehicles per day against 7,040), suggesting less demand on each road - very light roads: easy truck access, but little passing trade for roadside retail. Network-wide, Chester accounts for about 1.3% of South Carolina's statewide total of vehicle-miles. By volume, Chester's 2,971 vehicles per day trails 62% of counties in South Carolina.
Journey times run 7% higher than the state level, at 35.6 minutes on average. Its average travel time of 35.6 minutes is longer than 69% of counties in South Carolina.
The congestion ratio of 7.4% is 59% lower, pointing to smoother traffic flow than the state level - delays are rare enough to plan travel times almost to the minute.
| Traffic | vehicles per day7,222 |
|---|---|
| Trucks | 18.1% |
| Average travel time | 46.8 min |
| Congestion ratio | 12.9% |
| Drivers’ average age | 45.8 yrs |
| Drivers’ average income | $68,431 |
Highways carry most of the traffic in Chester County, South Carolina: 77% of all vehicle-miles. The average highway carries 7,222 vehicles per day, 282% more than the average non-highway road in the same area, which carries 1,893 vehicles per day.
Highways make up 28% of the monitored road miles (117 miles, 849 segments), so they carry more than their share: 1,465,131 vehicle-miles traveled per day (≈535 million per year).
60% of counties in South Carolina move less traffic on their highways.
At 18.1%, highway truck share is 32% higher than the state average. Highways here lean toward freight, so highway access is a real asset for logistics operators.
Chester's highway truck share (18.1%) is higher than 74% of counties in South Carolina. Chester's highway truck count is higher than 57% of counties in South Carolina, at roughly 1,309 trucks per day.
| Traffic | vehicles per day1,893 |
|---|---|
| Trucks | 7.5% |
| Average travel time | 32.7 min |
| Congestion ratio | 6.0% |
| Drivers’ average age | 48.6 yrs |
| Drivers’ average income | $57,929 |
Local roads carry a smaller share of travel in Chester County, South Carolina, 23% of vehicle-miles; most driving happens on highways. A typical local road sees 1,893 vehicles per day.
Local roads make up 72% of the monitored road miles (296 miles in 3,348 segments) but carry less than their share of travel: 436,213 vehicle-miles traveled per day (≈159 million per year). About 1 in 13 vehicles on non-highway roads is a truck (7.5%).
The concentration of trucks on non-highway roads is 59% lower than on highways.
Non-highway congestion (6.0%) runs 65% lower than the state average, pointing to smoother local traffic flow.
51% of counties in South Carolina see lower average driver income among trip origins than Chester. 76% of counties in South Carolina have an older driver population than Chester.
Of the four measures, truck share differs most: Chester County runs 65% above the South Carolina average. Its average daily traffic per road, by contrast, is 58% below.
| Metric | Chester County | South Carolina average | Difference |
|---|---|---|---|
| Traffic | 2,971 | 7,040 | -57.8% |
| Truck % (Total Traffic) | 15.7% | 9.5% | +65.3% |
| Truck % (Highway) | 18.1% | 13.7% | +32.4% |
| Avg. Travel Time | 35.6 min | 33.3 min | +6.9% |
Compared with its 4 closest neighbours, Chester County is 30.5% less congested and carries 31.5% less traffic on a typical road; it has the third busiest roads of the five. Freight passes through here that never reaches the areas around it: the truck share is high precisely because the local car traffic is not.
| Area | Average daily traffic | Truck share | Daily vehicle-miles | Average travel time | Congestion ratio |
|---|---|---|---|---|---|
| Chester County | 2,971 | 15.7% | 1,901,344 | 35.6 min | 7.4% |
| York County, South Carolina | 8,536 | 7.7% | 6,161,724 | 33.4 min | 18.1% |
| Fairfield County, South Carolina | 2,227 | 16.4% | 1,599,900 | 35.0 min | 6.6% |
| Lancaster County, South Carolina | 4,356 | 6.7% | 1,879,327 | 34.2 min | 10.9% |
| Union County, South Carolina | 2,235 | 9.6% | 558,719 | 32.3 min | 6.9% |
| South Carolina average | 7,040 | 9.5% | N/A | 33.3 min | 18.2% |
Average driver age places Chester County #35 of 46 in South Carolina - the bottom quarter of the state.
| Measure | Chester County | South Carolina rank |
|---|---|---|
| Traffic volume (AADT) | 2,971 | #29 of 46 |
| Highway vehicle-miles per day | 1,465,131 | #18 of 43 |
| Truck share on highways | 18.1% | #12 of 43 |
| Highway trucks per day | 1,309 | #19 of 43 |
| Average travel time | 35.6 min | #15 of 46 |
| Average driver income | $64,437 | #23 of 46 |
| Average driver age | 46.2 yrs | #35 of 46 |
Traffic concentrates on a few corridors: the three busiest roads average 22,143 vehicles a day, against 2,971 on the average road in Chester County.
I 77 leads with 44,163 vehicles a day, 9,348 of them trucks (21.2%). No other road comes close: Lancaster Highway, in second place, carries 11,406. It tops the truck ranking too, with the most trucks.
I 77 carries longer journeys than most roads here, with a median trip of 59.9 minutes against 35.6 county-wide.
Delays build on I 77: its congestion ratio of 53% over free-flow time is well above the county's 7%.
At 3.8 times the county average, Lancaster Highway draws drivers from neighborhoods averaging $58,953 in household income.
Travel on SC 9's busiest stretch runs 17% over free-flow time, against 7% across the county, so expect slower peak hours.
The busiest stretch of J A Cochran Bypass carries 3.5 times the county average; trucks are 7.8% of it, below the county-wide 15.7%.
On its busiest stretch, J A Cochran (Bypass) carries 2.9 times the county average; trucks are 5.3% of it, below the county-wide 15.7%.
Catawba River Road peaks at 7,523 vehicles a day, 2.5 times the county average; trucks are 10.5% of it, below the county-wide 15.7%.
The average monitored road in Chester carries 2,971 vehicles per day, 58% less than the South Carolina average of 7,040.
Chester's highway truck share of 18.1% is higher than 74% of counties in South Carolina.
Weekday traffic has two busy windows: AM peak 7:00 AM–8:00 AM and PM peak 4:00 PM–6:00 PM - about 78% above the daily average.
The average trip in Chester takes 35.6 minutes, 7% longer than the South Carolina average of 33.3 minutes, delays at signals and congestion included.
Drivers on Chester roads have a median age of 46 years, and the median household income of the neighborhoods trips originate from averages $64,437, 13% below the South Carolina average.
Approximately 26% of highway traffic and 10% of non-highway traffic consists of vehicles whose trip originates outside Chester County, South Carolina. Even highway traffic is mostly local, so these roads mainly serve residents and commuters.
Trucks make up about 15.7% of all traffic in Chester County, South Carolina, rising to 18.1% on highways, where long-haul freight concentrates.
I 77 carries the most, 44,163 vehicles per day on its busiest stretch, followed by Lancaster Highway (11,406), SC 9 (10,859), J A Cochran Bypass (10,372), J A Cochran (Bypass) (8,507). Figures are AADT, both directions combined.
I 77, with about 9,348 trucks per day on its busiest stretch, 21.2% of its 44,163 vehicles.
About 44,163 vehicles per day in both directions on its busiest stretch, including 9,348 trucks (21.2%). Traffic is lower on its quieter stretches; TrafficZoom shows the count for every segment.

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