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Traffic heat map of Duplin County, North Carolina: 472 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 40 and Southerland Street

Duplin County, North Carolina Traffic Counts

Traffic analytics for Duplin County, North Carolina, calculated from real-world mobile and sensor networks on 4,804 road segments (472 road miles, about 519 ft each). Its busiest road, I 40, carries 26,972 vehicles a day, 7.6 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 Duplin County, North Carolina

Traffic

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

vehicles per day3,529
Trucks

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

11.2%
Average travel time

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

38.6 min
Congestion ratio

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

11.9%
Drivers’ average age

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

47.4 yrs
Drivers’ average income

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

$60,200

Our data shows 3,529 vehicles per day on the average road in Duplin County, North Carolina, and 2,005,171 vehicle-miles traveled per day (≈732 million per year) across its 472 miles of monitored roads. At 11.2%, the truck share runs above the 8.7% across North Carolina: about 1 in 9 vehicles.

Longer trips than 95% of counties in North Carolina

At 3,529 vehicles per day, the average monitored road in Duplin carries 44% less traffic than the state average of 6,332, suggesting less demand on each road - less drive-by exposure for retail, but easier access for deliveries. In total volume terms, its road network carries about 0.7% of North Carolina's statewide total of vehicle-miles. Duplin carries less traffic than 70% of counties in North Carolina.

Journey times run 19% higher than the state level, at 38.6 minutes on average. On travel time, Duplin runs longer than 95% of counties in North Carolina.

Congestion runs 36% lower than the state level, at a ratio of 11.9%, which means smoother traffic flow - fewer delays make delivery windows more reliable.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Duplin County, North Carolina

Trafficvehicles per day6,185
Trucks14.2%
Average travel time58.5 min
Congestion ratio12.2%
Drivers’ average age44.6 yrs
Drivers’ average income$66,476

Highways carry more than half of all travel in Duplin County, North Carolina (57% of vehicle-miles). The average highway carries 6,185 vehicles per day, 91% more than the average non-highway road in the same area, which carries 3,244 vehicles per day.

With 29% of the road miles (138 miles in 466 segments), highways punch above their length, carrying 1,133,694 vehicle-miles traveled per day (≈414 million per year).

That is more highway travel volume than 59% of counties in North Carolina.

Higher highway truck share than 75% of counties in North Carolina

The concentration of trucks on highways (14.2%) is 18% higher than the state average for similar road classifications. Highways here lean toward freight, so highway access is a real asset for logistics operators.

75% of counties in North Carolina see a lower highway truck share than Duplin's 14.2%. 55% of counties in North Carolina see fewer highway trucks per day than Duplin's roughly 880.

non-highway traffic icon

Non-highway Traffic in Duplin County, North Carolina

Trafficvehicles per day3,244
Trucks7.2%
Average travel time36.4 min
Congestion ratio11.9%
Drivers’ average age49.8 yrs
Drivers’ average income$55,375

A significant share of driving in Duplin County, North Carolina, 43% of vehicle-miles, happens on local roads. On the average non-highway road, that comes to 3,244 vehicles per day.

Local roads make up 71% of the monitored road miles (334 miles in 4,338 segments) but carry less than their share of travel: 871,477 vehicle-miles traveled per day (≈318 million per year). The truck share on non-highway roads is 7.2%.

Younger drivers than 70% of counties in North Carolina

Non-highway roads carry a truck concentration that's 50% lower than the highway network.

At 33% lower than the state level, the non-highway congestion ratio of 11.9% signals easier movement on local roads.

67% of counties in North Carolina see higher average driver income among trip origins than Duplin. The driver population here skews younger than 70% of counties in North Carolina.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

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

Duplin County vs. North Carolina Traffic Comparison

The average daily traffic per road sets Duplin County apart: 44% below the North Carolina average. Its truck share, by contrast, is 28% above.

MetricDuplin CountyNorth Carolina averageDifference
Traffic3,5296,332-44.3%
Truck % (Total Traffic)11.2%8.7%+27.8%
Truck % (Highway)14.2%12.1%+17.8%
Avg. Travel Time38.6 min32.3 min+19.4%

How Duplin County compares

Duplin County has a higher truck share than any nearby county

Duplin County tracks the 4 areas around it closely - no measure in this table sets it far apart from the areas immediately next to it, though it has the fourth busiest roads of the five.

Duplin County and the 4 nearest county-level areas by centroid distance, with the North Carolina average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Duplin County3,52911.2%2,005,17138.6 min11.9%
Lenoir County, North Carolina5,9279.3%1,621,96737.1 min15.1%
Sampson County, North Carolina3,43810.0%2,164,92833.8 min11.2%
Jones County, North Carolina3,80010.1%859,52042.6 min10.3%
Wayne County, North Carolina5,1508.1%2,956,86931.9 min14.9%
North Carolina average6,3328.7%N/A32.3 min18.6%

Duplin County ranked within North Carolina

Duplin County sits in the top quarter of the North Carolina field on average travel time, at #6 of 100.

Duplin County ranked among 100 county-level areas in North Carolina (1 = highest); measures without data in every county rank a smaller field, down to 97.
MeasureDuplin CountyNorth Carolina rank
Traffic volume (AADT)3,529#70 of 100
Highway vehicle-miles per day1,133,694#40 of 97
Truck share on highways14.2%#25 of 97
Highway trucks per day880#44 of 97
Average travel time38.6 min#6 of 100
Average driver income$60,200#67 of 100
Average driver age47.4 yrs#70 of 100

Busiest roads in Duplin County, North Carolina

Traffic concentrates on a few corridors: the three busiest roads average 17,269 vehicles a day, against 3,529 on the average road in Duplin County.

I 40 is the busiest road, at 26,972 vehicles a day, 4,042 of them trucks (15.0%). No other road comes close: Southerland Street, in second place, carries 12,732. It also carries the most trucks on the list.

I 40 carries longer journeys than most roads here, with a median trip of 78.6 minutes against 38.6 county-wide.

Few trucks use Southerland Street: 4.0% of its traffic, under half the county's 11.2%.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 40Motorway · 26,972vehicles4,042trucks · 15.0%
Road class
Motorway
Congestion ratio
30.9%
Median trip time
78.6 min
Drivers’ median age
45.0 yrs
Drivers’ average income
$69,613

I 40 is one of the more congested roads here: trips take 31% longer than at free-flow speed, against 12% county-wide.

2Southerland StreetSecondary road · 12,732vehicles503trucks · 4.0%
Road class
Secondary road
Congestion ratio
36.5%
Median trip time
33.0 min
Drivers’ median age
49.7 yrs
Drivers’ average income
$56,812

Delays build on Southerland Street: its congestion ratio of 37% over free-flow time is well above the county's 12%.

3US 117Trunk road · 12,102vehicles1,432trucks · 11.8%
Road class
Trunk road
Congestion ratio
14.3%
Median trip time
47.9 min
Drivers’ median age
47.8 yrs
Drivers’ average income
$55,661

US 117 peaks at 12,102 vehicles a day, 3.4 times the county average; trucks are 11.8% of it, above the county-wide 11.2%.

4Main StreetTrunk road · 11,276vehicles1,238trucks · 11.0%
Road class
Trunk road
Congestion ratio
16.8%
Median trip time
40.6 min
Drivers’ median age
42.2 yrs
Drivers’ average income
$55,746

Main Street carries 3.2 times the county average at its busiest, 1,238 of them trucks (11.0%, in line with the county-wide 11.2%).

5Jackson StreetSecondary road · 9,993vehicles942trucks · 9.4%
Road class
Secondary road
Congestion ratio
30.6%
Median trip time
31.6 min
Drivers’ median age
48.1 yrs
Drivers’ average income
$58,239

Jackson Street carries 2.8 times the county average on its busiest stretch, where the median trip lasts 31.6 minutes.

Ranked by trucks per day

Only named roads are listed. Some unnamed segments, such as ramps or unlabeled carriageways, may carry as much traffic as the roads shown.

Cars and light vehiclesTrucks
1I 40Motorway · #1 by traffic26,972vehicles4,042trucks · 15.0%
2US 117Trunk road · #3 by traffic12,102vehicles1,432trucks · 11.8%
3Main StreetTrunk road · #4 by traffic11,276vehicles1,238trucks · 11.0%
4Kenansville BypassTrunk road · 8,244vehicles1,167trucks · 14.2%
Road class
Trunk road
Congestion ratio
10.3%
Median trip time
54.4 min
Drivers’ median age
47.0 yrs
Drivers’ average income
$58,499

Kenansville Bypass carries through traffic: the median trip using it lasts 54.4 minutes, against 38.6 for the county.

5US 117 CTRTrunk road · 9,134vehicles1,166trucks · 12.8%
Road class
Trunk road
Congestion ratio
10.0%
Median trip time
61.7 min
Drivers’ median age
49.8 yrs
Drivers’ average income
$52,925

Drivers on US 117 CTR are on long journeys, a median 61.7 minutes against 38.6 county-wide: a through route more than a local street.

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

DuplinDepartment 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 Duplin County

The same traffic breakdown for the areas closest to Duplin County, North Carolina.

Need segment-level traffic data?

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