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Traffic heat map of Edgefield County, South Carolina: 281 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Edgefield Road and I 20

Edgefield County, South Carolina Traffic Counts

Its busiest road, Edgefield Road, carries 11,579 vehicles a day, 4.5 times the average road. This page breaks down traffic in Edgefield County, South Carolina across 281 miles of monitored roads split into 2,603 segments, using multi-sourced mobile and sensor data. It goes beyond raw counts to truck flow, congestion and who is driving, so site selection and route planning rest on evidence.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
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Total Traffic Volume & Performance in Edgefield County, South Carolina

Traffic

The average number of vehicles that travel each day over any road in the road network.

vehicles per day2,572
Trucks

The percentage of the total traffic volume composed of heavy vehicles.

7.7%
Average travel time

The average time of travel averaged among all vehicles traveling on the road network.

32.9 min
Congestion ratio

The rate at which the actual travel time exceeds free-flow travel time, averaged among all roads in the network.

8.9%
Drivers’ average age

Average age of residents in the geographic areas where the vehicle trips originated.

47.9 yrs
Drivers’ average income

Average income of residents in the geographic areas where the vehicle trips originated.

$74,754

The average monitored road in Edgefield County, South Carolina carries 2,572 vehicles per day. Across its 281 miles of monitored roads, that adds up to 595,195 vehicle-miles traveled per day (≈217 million per year). Trucks are a smaller part of the mix than across South Carolina: 7.7% against 9.5%.

Traffic 63% below the South Carolina average

Edgefield sees 63% lower average daily traffic volume than the state average (2,572 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, Edgefield accounts for about 0.4% of South Carolina's statewide total of vehicle-miles. 78% of counties in South Carolina see more traffic than Edgefield's 2,572 vehicles per day.

The average trip takes 32.9 minutes, on par with the state level. On travel time, Edgefield runs shorter than 71% of counties in South Carolina.

At 51% lower than the state level, the 8.9% congestion ratio signals smoother traffic flow - free-flowing roads make scheduled deliveries highly predictable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Edgefield County, South Carolina

Trafficvehicles per day6,468
Trucks12.3%
Average travel time39.1 min
Drivers’ average age47.9 yrs
Drivers’ average income$91,664

Highways play a minor role in Edgefield County, South Carolina, carrying just 1% of all vehicle-miles. The average highway carries 6,468 vehicles per day, 152% more than the average non-highway road in the same area, which carries 2,567 vehicles per day.

Yet highways are only less than 1% of the road network, 1 miles in 3 segments, so each mile of them is 3.1 times as busy as the average road mile.

Fewer highway trucks than 81% of counties in South Carolina

Highway truck concentration here runs 10% lower than the state average, at 12.3%. The highway traffic mix is typical for South Carolina: neither freight- nor commuter-dominated.

By truck concentration, highways here trail 62% of counties in South Carolina. By raw truck volume, Edgefield carries fewer highway trucks than 81% of counties in South Carolina.

non-highway traffic icon

Non-highway Traffic in Edgefield County, South Carolina

Trafficvehicles per day2,567
Trucks7.7%
Average travel time32.9 min
Congestion ratio8.9%
Drivers’ average age47.9 yrs
Drivers’ average income$74,720

Nearly all driving in Edgefield County, South Carolina happens on local roads: 99% of every vehicle-mile. A typical local road sees 2,567 vehicles per day.

Local roads also make up about 100% of the monitored road miles: 280 miles in 2,600 segments, together carrying 591,241 vehicle-miles traveled per day (≈216 million per year). The truck share on non-highway roads is 7.7%.

Drivers from higher-income areas than 78% of counties in South Carolina

Compared to highways, non-highway routes see 38% fewer trucks by share.

The non-highway congestion ratio of 8.9% is 47% lower than the state level, suggesting more efficient local mobility than the state average.

Edgefield's average driver income is higher than 78% of counties in South Carolina. The driver population here skews younger than 51% of counties in South Carolina.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Edgefield County, South Carolina, the peak hour concentrates about 8% of the day's traffic.

Edgefield County vs. South Carolina Traffic Comparison

Edgefield County's biggest difference from the South Carolina average is its average daily traffic per road, 63% below it. Its truck share is also 19% below.

MetricEdgefield CountySouth Carolina averageDifference
Traffic2,5727,040-63.5%
Truck % (Total Traffic)7.7%9.5%-19.2%
Truck % (Highway)12.3%13.7%-10.3%
Avg. Travel Time32.9 min33.3 min-1.1%

How Edgefield County compares

Edgefield County against nearby counties

Compared with its 4 closest neighbours, Edgefield County moves 23.8% of the total daily travel and carries 47.3% less traffic on a typical road; it has the third busiest roads of the five. Less traffic and more room for it - the roads here run both quieter and freer than the areas around them.

Edgefield County and the 4 nearest county-level areas by centroid distance, with the South Carolina average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Edgefield County2,5727.7%595,19532.9 min8.9%
McCormick County, South Carolina2,2888.9%293,29545.7 min8.6%
Saluda County, South Carolina2,1648.9%559,11939.7 min8.0%
Aiken County, South Carolina6,11411.2%4,778,13531.1 min13.8%
Richmond County, Georgia8,9597.7%4,368,82329.7 min17.3%
South Carolina average7,0409.5%N/A33.3 min18.2%

Edgefield County ranked within South Carolina

No county-level area in South Carolina records a lower highway travel volume than Edgefield County.

Edgefield County ranked among 46 county-level areas in South Carolina (1 = highest); measures without data in every county rank a smaller field, down to 43.
MeasureEdgefield CountySouth Carolina rank
Traffic volume (AADT)2,572#36 of 46
Highway vehicle-miles per day3,954#43 of 43
Truck share on highways12.3%#27 of 43
Highway trucks per day794#35 of 43
Average travel time32.9 min#33 of 46
Average driver income$74,754#11 of 46
Average driver age47.9 yrs#24 of 46

Edgefield County ranks #11 of 46 on average driver income but #43 of 43 on highway travel volume - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Edgefield County, South Carolina

On their busiest stretches, the three busiest roads in Edgefield County carry 10,022 vehicles a day on average, 3.9 times the typical road in the county (2,572).

Edgefield Road is the busiest road, at 11,579 vehicles a day, 938 of them trucks (8.1%). I 20 carries the most trucks, 1,264 a day (12.3% of its traffic), although it ranks #2 for all traffic.

Trips using SC 121 are long: a median of 45.5 minutes against 32.9 county-wide, the mark of a through route.

Lee Street draws drivers from lower-income areas: their neighborhoods average $51,535 in household income, 31% below the county's $74,754.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Edgefield RoadPrimary road · 11,579vehicles938trucks · 8.1%
Road class
Primary road
Congestion ratio
18.7%
Median trip time
31.1 min
Drivers’ median age
47.1 yrs
Drivers’ average income
$78,163

Delays build on Edgefield Road: its congestion ratio of 19% over free-flow time is well above the county's 9%.

2I 20Motorway · 10,291vehicles1,264trucks · 12.3%
Road class
Motorway
Median trip time
39.1 min
Drivers’ median age
47.9 yrs
Drivers’ average income
$91,664

On its busiest stretch, I 20 carries 4.0 times the county average; trucks are 12.3% of it, above the county-wide 7.7%.

3Martintown RoadSecondary road · 8,197vehicles486trucks · 5.9%
Road class
Secondary road
Congestion ratio
19.5%
Median trip time
27.7 min
Drivers’ median age
51.1 yrs
Drivers’ average income
$93,288

Travel on Martintown Road's busiest stretch runs 20% over free-flow time, against 9% across the county, so expect slower peak hours.

4Augusta RoadPrimary road · 6,508vehicles580trucks · 8.9%
Road class
Primary road
Congestion ratio
16.8%
Median trip time
40.0 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$67,668

Augusta Road peaks at 6,508 vehicles a day, 2.5 times the county average; trucks are 8.9% of it, above the county-wide 7.7%.

5Lee StreetPrimary road · 6,202vehicles490trucks · 7.9%
Road class
Primary road
Congestion ratio
15.8%
Median trip time
44.2 min
Drivers’ median age
47.5 yrs
Drivers’ average income
$51,535

Drivers on Lee Street are on long journeys, a median 44.2 minutes against 32.9 county-wide: a through route more than a local street.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 20Motorway · #2 by traffic10,291vehicles1,264trucks · 12.3%
2Edgefield RoadPrimary road · #1 by traffic11,579vehicles938trucks · 8.1%
3Augusta RoadPrimary road · #4 by traffic6,508vehicles580trucks · 8.9%
4Pine House RoadPrimary road · 6,061vehicles520trucks · 8.6%
Road class
Primary road
Congestion ratio
15.9%
Median trip time
42.3 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$68,754

Pine House Road carries 2.4 times the county average at its busiest, 520 of them trucks (8.6%, above the county-wide 7.7%).

5SC 121Primary road · 5,383vehicles503trucks · 9.3%
Road class
Primary road
Congestion ratio
11.9%
Median trip time
45.5 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$63,157

SC 121 carries 2.1 times the county average on its busiest stretch, where the median trip lasts 45.5 minutes.

How to read these road counts
  • The first number is AADT, annual average daily traffic: the vehicles passing a point on an average day, both directions combined and trucks included. On a divided highway both carriageways are added together.
  • Traffic changes along a road, with more near interchanges and towns and less in open country. Every figure for a road describes its busiest stretch in the county, so the two rankings show the same numbers for the same road.
  • The second number is the trucks on that stretch, a part of its AADT. The bar splits the AADT into cars and light vehicles (blue) and trucks (amber).
  • See segment-level AADT for any road on TrafficZoom.

Data Sources & Methodology

The data presented on this page is derived from TrafficZoom's proprietary analytics platform, which aggregates and normalizes information from multiple sources, including:

Mobile device location data (anonymized and aggregated)

Road sensor networks and traffic counters

Historical traffic pattern databases

Public traffic count programs published by the

EdgefieldDepartment of Transportation

Demographic Baseline for O-D Modeling

U.S. Census Bureau
All metrics represent estimates based on statistical modeling and are intended for strategic planning purposes.
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Data current as of:
Q3 2026

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Counties near Edgefield County

The same traffic breakdown for the areas closest to Edgefield County, South Carolina.

Need segment-level traffic data?

Identify traffic patterns street by street and analyze the exact corridors that matter to your project.