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Marlboro County, South Carolina Traffic Counts

This page delivers traffic analytics for Marlboro County, South Carolina. Our metrics are calculated with multi-sourced, cross-verified data from real-world mobile and sensor networks, and averaged for Marlboro County, South Carolina among 340 road miles divided in 2,380 segments. Our metrics go beyond simple volume counts to provide actionable insights on traffic intensity, congestion, commercial vehicle flow, and network performance with highest possible granularity (average segment length is 754 ft). Whether you are evaluating a new retail location, planning logistics routes, or assessing infrastructure needs, this data helps you move from assumptions to certainty.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
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total traffic icon

Total Traffic Volume & Performance

Traffic

2,772

Trucks

10.5%

Average travel time

59.0 min

Congestion ratio

8.9%

Drivers’ average age

49.1 yrs

Drivers’ average income

$41,453

Our data indicates an estimated average traffic volume of 2,772 vehicles per day in Marlboro County, South Carolina that results in 729,377 vehicle-miles traveled per day (≈266 million per year). The traffic stream is comprised of an average of 1 truck for every 10 vehicles. Typical time spent behind the wheel per trip is 59.0 minutes, which already accounts for delays at signals, intersections, and congestion.

Analytical insight

When compared to the South Carolina state averages: Marlboro sees 61% lower average daily traffic volume than the state average (2,772 vehicles per day against 7,040), suggesting less demand on each road - a critical factor for logistics and site planning. In total volume terms, its road network carries 729,377 vehicle-miles traveled per day (≈266 million per year), about 0.5% of South Carolina's statewide total. At 59.0 minutes, the average travel time is 77% higher than the state level. Congestion runs 51% lower than the state level, at a ratio of 8.9% - smoother traffic flow - crucial for traffic control improvement and logistics planning. Marlboro carries more traffic than 27% of counties in South Carolina. At 59.0 minutes, Marlboro also has the highest average travel time in South Carolina.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic

Traffic

5,255

Trucks

12.1%

Average travel time

45.2 min

Congestion ratio

12.1%

Drivers’ average age

48.3 yrs

Drivers’ average income

$41,295

A significant volume of traffic in Marlboro County, South Carolina utilizes the highway network. The average highway carries 5,255 vehicles per day, 136% more than the average non-highway road in the same area, which carries 2,229 vehicles per day. That average covers 60 highway road miles divided in 427 segments (average segment length 736 ft), together carrying 280,716 vehicle-miles traveled per day (≈102 million per year). Trucks constitute 12.1% of highway traffic.

Analytical insight

At 12.1%, highway truck share is 12% lower than the state average, marking Marlboro as a primarily local traffic hub - underscoring the importance of local access for logistics operators. By truck concentration, highways here outrank 36% of counties in South Carolina. 14% of counties in South Carolina see fewer highway trucks per day than Marlboro's roughly 635.
non-highway traffic icon

Non-highway traffic

Traffic

2,229

Trucks

9.5%

Average travel time

62.0 min

Congestion ratio

8.2%

Drivers’ average age

50.0 yrs

Drivers’ average income

$41,588

The non-highway road network in Marlboro County, South Carolina supports a substantial volume of traffic. The average non-highway road carries 2,229 vehicles per day, 58% less than the average highway in the same area, which carries 5,255 vehicles per day. That average covers 281 non-highway road miles divided in 1,953 segments (average segment length 758 ft), together carrying 448,661 vehicle-miles traveled per day (≈164 million per year). Trucks constitute 9.5% of non-highway traffic.

Analytical insight

The concentration of trucks on non-highway roads is 21% lower than on highways. The non-highway congestion ratio of 8.2% is 52% lower than the state level, suggesting more efficient local mobility than the state average. Marlboro also posts the highest overall average travel time in South Carolina - 59.0 minutes. Trips here originate from the lowest average driver income in South Carolina, at $41,453. Marlboro's median driver age is higher than 69% of counties in South Carolina.

Time-of-Day & Seasonal Patterns

Analytical insight

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

Traffic Flow Profile Comparison

Metric

Marlboro

South Carolina
Average

Difference

Traffic

2,772

7,040

-60.6%

Truck % (Total Traffic)

10.5%

9.5%

+10.6%

Truck % (Highway)

12.1%

13.7%

-11.7%

Avg. Travel Time

59.0 min

33.3 min

+77.3%

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

South CarolinaDepartment of Transportation

Historical traffic pattern databases

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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