Need segment-level traffic data?

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

Get insights →
Traffic heat map of Johnston County, North Carolina: 862 miles of roads shaded from blue (light) to red (heavy traffic), busiest on I 95 and I 40

Johnston County, North Carolina Traffic Counts

TrafficZoom tracks traffic on 862 road miles in Johnston County, North Carolina, divided into 16,573 segments averaging 275 ft. Its busiest road, I 95, carries 40,484 vehicles a day, 7.0 times the average road. Built from cross-verified mobile and road-sensor data, these counts help you size up a retail site, plan logistics routes or assess infrastructure needs.
Data sourced from TrafficZoom's proprietary analytics platform.
Data current as of:
Q3 2026
Updated:
September 29, 2026
Find my place
total traffic icon

Total Traffic Volume & Performance in Johnston County, North Carolina

Traffic

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

vehicles per day5,784
Trucks

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

11.6%
Average travel time

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

31.0 min
Congestion ratio

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

16.6%
Drivers’ average age

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

44.5 yrs
Drivers’ average income

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

$84,143

Our data shows 5,784 vehicles per day on the average road in Johnston County, North Carolina, and 6,802,026 vehicle-miles traveled per day (≈2.5 billion per year) across its 862 miles of monitored roads. At 11.6%, the truck share runs above the 8.7% across North Carolina: about 1 in 9 vehicles.

Shorter trips than 71% of counties in North Carolina

At 5,784 vehicles per day, the average road in Johnston carries somewhat less traffic than the state average of 6,332 (9% less). In total volume terms, its road network carries about 2.5% of North Carolina's statewide total of vehicle-miles. By volume, Johnston's 5,784 vehicles per day outpaces 68% of counties in North Carolina.

At 31.0 minutes, the average travel time matches the state level closely. 71% of counties in North Carolina have a longer average travel time than Johnston's 31.0 minutes.

Congestion is somewhat lower than the state level, at a ratio of 16.6% (11% lower) - relevant for traffic control and delivery planning.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Johnston County, North Carolina

Trafficvehicles per day15,390
Trucks17.9%
Average travel time45.2 min
Congestion ratio31.1%
Drivers’ average age44.6 yrs
Drivers’ average income$73,613

Travel in Johnston County, North Carolina splits roughly evenly, with about half of it (53% of vehicle-miles) on highways. The average highway carries 15,390 vehicles per day, 182% more than the average non-highway road in the same area, which carries 5,448 vehicles per day.

With 24% of the road miles (210 miles in 559 segments), highways punch above their length, carrying 3,582,516 vehicle-miles traveled per day (≈1.3 billion per year).

By highway travel volume, Johnston outranks 93% of counties in North Carolina.

Higher highway truck share than 91% of counties in North Carolina

Highway truck concentration here runs 48% higher than the state average, at 17.9%. Highways here lean toward freight, so highway access is a real asset for logistics operators.

91% of counties in North Carolina see a lower highway truck share than Johnston's 17.9%. By raw truck volume, Johnston carries more highway trucks than 91% of counties in North Carolina.

non-highway traffic icon

Non-highway Traffic in Johnston County, North Carolina

Trafficvehicles per day5,448
Trucks4.6%
Average travel time30.5 min
Congestion ratio16.1%
Drivers’ average age44.5 yrs
Drivers’ average income$88,463

Travel in Johnston County, North Carolina splits roughly evenly, with about half of it (47% of vehicle-miles) on local roads. On the average non-highway road, that comes to 5,448 vehicles per day.

Spread over 652 miles and 16,014 segments, 76% of the road network, local roads carry a lighter load per mile: 3,219,510 vehicle-miles traveled per day (≈1.2 billion per year). The truck share on non-highway roads is 4.6%.

Drivers from higher-income areas than 89% of counties in North Carolina

Non-highway roads carry a truck concentration that's 74% lower than the highway network.

Non-highway congestion (16.1%) runs slightly lower than the state level (9% lower).

89% of counties in North Carolina see lower average driver income among trip origins than Johnston. 88% of counties in North Carolina have an older driver population than Johnston.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–9:00 AM and PM peak 5:00 PM–6:00 PM, with volumes reaching approximately 82% higher than the daily average.
Weekend traffic:
Weekends are much quieter: volumes run about 23% below weekday levels, the signature of a commute-driven road network.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
March–May is the high season, with volumes +7% versus the annual average.
Lowest month:
November is the quietest month, with volumes -47% versus the annual average.

Data Finding: Hourly & Seasonal Patterns

In Johnston County, North Carolina, the peak hour concentrates about 8% of the day's traffic, and there is a noticeable seasonal swing of +7% in high season.

Johnston County vs. North Carolina Traffic Comparison

The highway truck share sets Johnston County apart: 48% above the North Carolina average. Its truck share is also 33% above.

MetricJohnston CountyNorth Carolina averageDifference
Traffic5,7846,332-8.7%
Truck % (Total Traffic)11.6%8.7%+32.9%
Truck % (Highway)17.9%12.1%+48.3%
Avg. Travel Time31.0 min32.3 min-4.0%

How Johnston County compares

Johnston County against nearby counties

Nothing in this table sets Johnston County sharply apart from the 4 areas nearest to it, though it has the third busiest roads of the five.

Johnston 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
Johnston County5,78411.6%6,802,02631.0 min16.6%
Wake County, North Carolina9,1716.2%26,545,02831.9 min24.8%
Wayne County, North Carolina5,1508.1%2,956,86931.9 min14.9%
Harnett County, North Carolina5,9209.4%3,292,61733.8 min14.7%
Wilson County, North Carolina4,31512.8%2,790,24033.7 min16.0%
North Carolina average6,3328.7%N/A32.3 min18.6%

Johnston County ranked within North Carolina

Highway travel volume places Johnston County #8 of 97 in North Carolina - the top quarter of the state.

Johnston 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.
MeasureJohnston CountyNorth Carolina rank
Traffic volume (AADT)5,784#33 of 100
Highway vehicle-miles per day3,582,516#8 of 97
Truck share on highways17.9%#10 of 97
Highway trucks per day2,756#10 of 97
Average travel time31.0 min#71 of 100
Average driver income$84,143#12 of 100
Average driver age44.5 yrs#88 of 100

The two ends of this table sit far apart: #8 of 97 on highway travel volume, against #88 of 100 on average driver age.

Busiest roads in Johnston County, North Carolina

On their busiest stretches, the three busiest roads in Johnston County carry 35,060 vehicles a day on average, 6.1 times the typical road in the county (5,784).

I 95 leads with 40,484 vehicles a day, 9,703 of them trucks (24.0%). It also carries the most trucks.

I 40 carries longer journeys than most roads here, with a median trip of 51.0 minutes against 31.0 county-wide.

Trucks make up 24.0% of traffic on I 95, against 11.6% across all roads in the county.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1I 95Motorway · 40,484vehicles9,703trucks · 24.0%
Road class
Motorway
Congestion ratio
44.2%
Median trip time
48.4 min
Drivers’ median age
46.3 yrs
Drivers’ average income
$66,827

I 95 is one of the more congested roads here: trips take 44% longer than at free-flow speed, against 17% county-wide.

2I 40Motorway · 34,134vehicles5,497trucks · 16.1%
Road class
Motorway
Congestion ratio
35.5%
Median trip time
51.0 min
Drivers’ median age
42.9 yrs
Drivers’ average income
$78,473

Delays build on I 40: its congestion ratio of 35% over free-flow time is well above the county's 17%.

3US 70Motorway · 30,561vehicles2,819trucks · 9.2%
Road class
Motorway
Congestion ratio
34.7%
Median trip time
42.0 min
Drivers’ median age
43.7 yrs
Drivers’ average income
$76,518

US 70 carries 5.3 times the county average at its busiest, 2,819 of them trucks (9.2%, below the county-wide 11.6%).

4US 264Motorway · 29,974vehicles3,989trucks · 13.3%
Road class
Motorway
Congestion ratio
35.3%
Median trip time
47.3 min
Drivers’ median age
44.2 yrs
Drivers’ average income
$79,885

Drivers on US 264 are on long journeys, a median 47.3 minutes against 31.0 county-wide: a through route more than a local street.

5Clayton Bypass Scenic BywayMotorway · 28,521vehicles3,182trucks · 11.2%
Road class
Motorway
Congestion ratio
27.4%
Median trip time
44.5 min
Drivers’ median age
43.6 yrs
Drivers’ average income
$83,062

Clayton Bypass Scenic Byway carries 4.9 times the county average at its busiest, 3,182 of them trucks (11.2%, in line with the county-wide 11.6%).

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 95Motorway · #1 by traffic40,484vehicles9,703trucks · 24.0%
2I 40Motorway · #2 by traffic34,134vehicles5,497trucks · 16.1%
3US 264Motorway · #4 by traffic29,974vehicles3,989trucks · 13.3%
4Clayton Bypass Scenic BywayMotorway · #5 by traffic28,521vehicles3,182trucks · 11.2%
5US 70Motorway · #3 by traffic30,561vehicles2,819trucks · 9.2%
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

JohnstonDepartment 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.
link arrow icon
Data current as of:
Q3 2026

Explore further

TrafficZoom platform

— street-level analytics and custom corridor reports.

Map AI

— demographics, housing and mobility data.

Counties near Johnston County

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

Need segment-level traffic data?

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