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Traffic heat map of Greenwood County, South Carolina: 314 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Bypass 72 Northeast

Greenwood County, South Carolina Traffic Counts

Traffic analytics for Greenwood County, South Carolina, calculated from real-world mobile and sensor networks on 3,830 road segments (314 road miles, about 433 ft each). Its busiest road, Bypass 72 Northeast, carries 25,303 vehicles a day, 3.5 times the average road. Use the figures below to move from assumptions to certainty on retail locations, logistics and road planning.
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 Greenwood County, South Carolina

Traffic

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

vehicles per day7,133
Trucks

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

6.3%
Average travel time

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

33.4 min
Congestion ratio

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

17.2%
Drivers’ average age

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

48.6 yrs
Drivers’ average income

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

$61,733

A typical monitored road in Greenwood County, South Carolina sees 7,133 vehicles per day, while its 314 miles of monitored roads together handle 1,343,459 vehicle-miles traveled per day (≈490 million per year). Trucks are a smaller part of the mix than across South Carolina: 6.3% against 9.5%.

Busier roads than 76% of counties in South Carolina

The average road in Greenwood carries 7,133 vehicles per day, essentially matching the state average of 7,040. In total volume terms, its road network carries about 0.9% of South Carolina's statewide total of vehicle-miles. 76% of counties in South Carolina see less traffic than Greenwood's 7,133 vehicles per day.

At 33.4 minutes, the average travel time matches the state level closely. 56% of counties in South Carolina have a longer average travel time than Greenwood's 33.4 minutes.

The congestion ratio of 17.2% runs slightly lower than the state level (5% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Greenwood County, South Carolina

Trafficvehicles per day16,711
Trucks7.2%
Average travel time32.9 min
Congestion ratio25.8%
Drivers’ average age49.0 yrs
Drivers’ average income$62,509

A significant share of driving in Greenwood County, South Carolina, 30% of vehicle-miles, happens on highways. The average highway carries 16,711 vehicles per day, 206% more than the average non-highway road in the same area, which carries 5,466 vehicles per day.

Highways make up 11% of the monitored road miles (36 miles, 568 segments), so they carry more than their share: 409,246 vehicle-miles traveled per day (≈149 million per year).

Lower highway truck share than 93% of counties in South Carolina

At 7.2%, highway truck share is 47% lower than the state average. Highways here carry mainly commuter and local trips, with little through freight.

By truck concentration, highways here trail 93% of counties in South Carolina. By raw truck volume, Greenwood carries fewer highway trucks than 76% of counties in South Carolina.

non-highway traffic icon

Non-highway Traffic in Greenwood County, South Carolina

Trafficvehicles per day5,466
Trucks5.9%
Average travel time33.4 min
Congestion ratio15.7%
Drivers’ average age48.3 yrs
Drivers’ average income$61,364

Local roads carry more than half of all travel in Greenwood County, South Carolina (70% of vehicle-miles). The average non-highway road carries 5,466 vehicles per day.

Spread over 278 miles and 3,262 segments, 89% of the road network, local roads carry a lighter load per mile: 934,213 vehicle-miles traveled per day (≈341 million per year). Trucks make up 5.9% of non-highway traffic, about 1 in 17 vehicles.

Older drivers than 67% of counties in South Carolina

Non-highway roads carry a truck concentration that's 18% lower than the highway network.

Non-highway congestion (15.7%) runs slightly lower than the state level (7% lower).

Trip origins here have lower average income than 60% of counties in South Carolina. Greenwood's median driver age is higher than 67% of counties in South Carolina.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Greenwood County, South Carolina, the peak hour concentrates about 7% of the day's traffic.

Greenwood County vs. South Carolina Traffic Comparison

The highway truck share sets Greenwood County apart: 47% below the South Carolina average. Its truck share is also 33% below.

MetricGreenwood CountySouth Carolina averageDifference
Traffic7,1337,040+1.3%
Truck % (Total Traffic)6.3%9.5%-33.5%
Truck % (Highway)7.2%13.7%-47.4%
Avg. Travel Time33.4 min33.3 min+0.2%

How Greenwood County compares

Greenwood County has the busiest roads among its nearby counties

Set against the average of the 4 areas nearest to it, Greenwood County carries 182.8% more traffic on a typical road and is 114.5% more congested; it has the busiest roads of the five. It is where traffic concentrates in this corner of the map - the local bottleneck, with more vehicles per road AND less room to absorb them.

Greenwood 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
Greenwood County7,1336.3%1,343,45933.4 min17.2%
Abbeville County, South Carolina2,1427.5%511,31434.1 min6.6%
Saluda County, South Carolina2,1648.9%559,11939.7 min8.0%
Laurens County, South Carolina3,49512.3%2,644,96236.8 min8.9%
McCormick County, South Carolina2,2888.9%293,29545.7 min8.6%
South Carolina average7,0409.5%N/A33.3 min18.2%

Greenwood County ranked within South Carolina

Truck share on highways places Greenwood County #40 of 43 in South Carolina - the bottom quarter of the state.

Greenwood 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.
MeasureGreenwood CountySouth Carolina rank
Traffic volume (AADT)7,133#12 of 46
Highway vehicle-miles per day409,246#35 of 43
Truck share on highways7.2%#40 of 43
Highway trucks per day1,203#33 of 43
Average travel time33.4 min#26 of 46
Average driver income$61,733#28 of 46
Average driver age48.6 yrs#16 of 46

Greenwood County ranks #12 of 46 on average daily traffic volume but #40 of 43 on truck share on highways - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Greenwood County, South Carolina

On their busiest stretches, the three busiest roads in Greenwood County carry 24,126 vehicles a day on average, 3.4 times the typical road in the county (7,133).

Bypass 72 Northeast leads with 25,303 vehicles a day, 1,112 of them trucks (4.4%). Nation Road carries the most trucks, 1,328 a day (10.6% of its traffic), although it is not among the 5 busiest roads overall.

Traffic and freight follow different roads here: only 0 of the five busiest roads also make the top 5 for trucks.

Trips using Nation Road are long: a median of 45.7 minutes against 33.4 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Bypass 72 NortheastTrunk road · 25,303vehicles1,112trucks · 4.4%
Road class
Trunk road
Congestion ratio
38.5%
Median trip time
31.7 min
Drivers’ median age
49.2 yrs
Drivers’ average income
$59,992

Bypass 72 Northeast peaks at 25,303 vehicles a day, 3.5 times the county average; trucks are 4.4% of it, below the county-wide 6.3%.

2Bypass 72 NorthwestTrunk road · 23,798vehicles948trucks · 4.0%
Road class
Trunk road
Congestion ratio
34.6%
Median trip time
32.1 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$62,639

Bypass 72 Northwest carries 3.3 times the county average at its busiest, 948 of them trucks (4.0%, below the county-wide 6.3%).

3Main StreetPrimary road · 23,279vehicles779trucks · 3.4%
Road class
Primary road
Median trip time
39.9 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$56,506

Main Street carries 3.3 times the county average on its busiest stretch, where the median trip lasts 39.9 minutes.

4Montague AvenuePrimary road · 17,336vehicles578trucks · 3.3%
Road class
Primary road
Congestion ratio
53.9%
Median trip time
31.6 min
Drivers’ median age
48.6 yrs
Drivers’ average income
$57,050

Montague Avenue is one of the more congested roads here: trips take 54% longer than at free-flow speed, against 17% county-wide.

5Calhoun AvenuePrimary road · 15,870vehicles612trucks · 3.9%
Road class
Primary road
Congestion ratio
48.7%
Median trip time
33.8 min
Drivers’ median age
48.0 yrs
Drivers’ average income
$55,765

Delays build on Calhoun Avenue: its congestion ratio of 49% over free-flow time is well above the county's 17%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Nation RoadTrunk road · 12,582vehicles1,328trucks · 10.6%
Road class
Trunk road
Median trip time
45.7 min
Drivers’ median age
47.2 yrs
Drivers’ average income
$57,736

Nation Road carries 76% more than the county average at its busiest, 1,328 of them trucks (10.6%, above the county-wide 6.3%).

2Sulpher Springs RoadTrunk road · 14,439vehicles1,314trucks · 9.1%
Road class
Trunk road
Median trip time
43.7 min
Drivers’ median age
46.9 yrs
Drivers’ average income
$58,236

At 2.0 times the county average, Sulpher Springs Road draws drivers from neighborhoods averaging $58,236 in household income.

3US 25Trunk road · 13,233vehicles1,297trucks · 9.8%
Road class
Trunk road
Congestion ratio
15.0%
Median trip time
43.7 min
Drivers’ median age
47.3 yrs
Drivers’ average income
$57,917

Drivers on US 25 are on long journeys, a median 43.7 minutes against 33.4 county-wide: a through route more than a local street.

4Green Acres DriveTrunk road · 13,489vehicles1,156trucks · 8.6%
Road class
Trunk road
Median trip time
44.3 min
Drivers’ median age
47.4 yrs
Drivers’ average income
$57,435

Green Acres Drive carries through traffic: the median trip using it lasts 44.3 minutes, against 33.4 for the county.

5US 221Trunk road · 12,989vehicles1,136trucks · 8.8%
Road class
Trunk road
Congestion ratio
14.2%
Median trip time
34.9 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$65,582

US 221 carries 82% more than the county average on its busiest stretch, where the median trip lasts 34.9 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

GreenwoodDepartment 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 Greenwood County

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

Need segment-level traffic data?

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