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Traffic heat map of Johnson County, Kentucky: 212 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Mayo Trail and US 23

Johnson County, Kentucky Traffic Counts

Its busiest road, Mayo Trail, carries 12,396 vehicles a day, 4.6 times the average road. This page breaks down traffic in Johnson County, Kentucky across 212 miles of monitored roads split into 1,724 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 Johnson County, Kentucky

Traffic

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

vehicles per day2,674
Trucks

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

7.6%
Average travel time

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

26.1 min
Congestion ratio

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

13.4%
Drivers’ average age

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

49.1 yrs
Drivers’ average income

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

$47,864

A typical monitored road in Johnson County, Kentucky sees 2,674 vehicles per day, while its 212 miles of monitored roads together handle 425,028 vehicle-miles traveled per day (≈155 million per year). About 1 in 13 vehicles is a truck, fewer than the 1 in 8 across Kentucky.

Shorter trips than 95% of counties in Kentucky

Johnson sees 43% lower average daily traffic volume than the state average (2,674 vehicles per day against 4,696), suggesting less demand on each road - lighter roads for freight, but less passing trade for roadside retail. Across the whole network, that travel is about 0.4% of Kentucky's statewide total. Johnson carries more traffic than 58% of counties in Kentucky.

The average trip takes 26.1 minutes, 18% lower than the state level. 95% of counties in Kentucky have a longer average travel time than Johnson's 26.1 minutes.

Congestion is somewhat lower than the state level, at a ratio of 13.4% (9% lower).

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Johnson County, Kentucky

Trafficvehicles per day3,754
Trucks9.8%
Average travel time32.7 min
Congestion ratio11.1%
Drivers’ average age49.2 yrs
Drivers’ average income$45,677

A significant share of driving in Johnson County, Kentucky, 44% of vehicle-miles, happens on highways. The average highway carries 3,754 vehicles per day, 50% more than the average non-highway road in the same area, which carries 2,505 vehicles per day.

With 25% of the road miles (53 miles in 233 segments), highways punch above their length, carrying 185,710 vehicle-miles traveled per day (≈67.8 million per year).

Fewer highway trucks than 94% of counties in Kentucky

At 9.8%, highway truck share is 38% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

Johnson's highway truck share (9.8%) is lower than 87% of counties in Kentucky. By raw truck volume, Johnson carries fewer highway trucks than 94% of counties in Kentucky.

non-highway traffic icon

Non-highway Traffic in Johnson County, Kentucky

Trafficvehicles per day2,505
Trucks5.9%
Average travel time25.1 min
Congestion ratio13.8%
Drivers’ average age49.0 yrs
Drivers’ average income$49,062

Local roads carry more than half of all travel in Johnson County, Kentucky (56% of vehicle-miles). On the average non-highway road, that comes to 2,505 vehicles per day.

Spread over 159 miles and 1,491 segments, 75% of the road network, local roads carry a lighter load per mile: 239,318 vehicle-miles traveled per day (≈87.4 million per year). About 1 in 17 vehicles on non-highway roads is a truck (5.9%).

Drivers from lower-income areas than 82% of counties in Kentucky

Compared to highways, non-highway routes see 40% fewer trucks by share.

The non-highway congestion ratio of 13.8% is in line with the state level.

82% of counties in Kentucky see higher average driver income among trip origins than Johnson. 68% of counties in Kentucky have a younger driver population than Johnson.

Time-of-Day & Seasonal Patterns

Data Finding: Hourly & Seasonal Patterns

In Johnson County, Kentucky, the peak hour concentrates about 7% of the day's traffic.

Johnson County vs. Kentucky Traffic Comparison

Of the four measures, average daily traffic per road differs most: Johnson County runs 43% below the Kentucky average. Its highway truck share is also 38% below.

MetricJohnson CountyKentucky averageDifference
Traffic2,6744,696-43.1%
Truck % (Total Traffic)7.6%12.1%-36.7%
Truck % (Highway)9.8%15.9%-37.9%
Avg. Travel Time26.1 min31.7 min-17.5%

How Johnson County compares

Johnson County is more congested than any nearby county

Against the 4 nearest areas, Johnson County is 112.4% more congested and carries 62.5% more traffic on a typical road; 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.

Johnson County and the 4 nearest county-level areas by centroid distance, with the Kentucky average for scale.
AreaAverage daily trafficTruck shareDaily vehicle-milesAverage travel timeCongestion ratio
Johnson County2,6747.6%425,02826.1 min13.4%
Lawrence County, Kentucky1,90211.5%348,24029.2 min8.1%
Martin County, Kentucky1,34911.6%148,27926.6 min5.6%
Magoffin County, Kentucky1,52511.4%256,63329.1 min5.4%
Morgan County, Kentucky1,80611.0%311,80036.9 min6.1%
Kentucky average4,69612.1%N/A31.7 min14.7%

Johnson County ranked within Kentucky

Johnson County sits in the bottom quarter of the Kentucky field on average travel time, at #114 of 120.

Johnson County ranked among 120 county-level areas in Kentucky (1 = highest); measures without data in every county rank a smaller field, down to 115.
MeasureJohnson CountyKentucky rank
Traffic volume (AADT)2,674#51 of 120
Highway vehicle-miles per day185,710#80 of 115
Truck share on highways9.8%#100 of 115
Highway trucks per day370#108 of 115
Average travel time26.1 min#114 of 120
Average driver income$47,864#98 of 120
Average driver age49.1 yrs#39 of 120

The two ends of this table sit far apart: #39 of 120 on average driver age, against #114 of 120 on average travel time.

Busiest roads in Johnson County, Kentucky

On their busiest stretches, the three busiest roads in Johnson County carry 9,772 vehicles a day on average, 3.7 times the typical road in the county (2,674).

Mayo Trail leads with 12,396 vehicles a day, 584 of them trucks (4.7%). Paintsville Road carries the most trucks, 832 a day (10.6% of its traffic), although it ranks #4 for all traffic.

Trips using Paintsville Road are long: a median of 36.7 minutes against 26.1 county-wide, the mark of a through route.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Mayo TrailPrimary road · 12,396vehicles584trucks · 4.7%
Road class
Primary road
Congestion ratio
29.6%
Median trip time
25.4 min
Drivers’ median age
48.9 yrs
Drivers’ average income
$47,020

Travel on Mayo Trail's busiest stretch runs 30% over free-flow time, against 13% across the county, so expect slower peak hours.

2US 23Trunk road · 8,749vehicles745trucks · 8.5%
Road class
Trunk road
Congestion ratio
8.1%
Median trip time
32.9 min
Drivers’ median age
49.6 yrs
Drivers’ average income
$46,403

The busiest stretch of US 23 carries 3.3 times the county average; trucks are 8.5% of it, above the county-wide 7.6%.

3KY 40Primary road · 8,170vehicles420trucks · 5.1%
Road class
Primary road
Congestion ratio
22.3%
Median trip time
23.9 min
Drivers’ median age
49.5 yrs
Drivers’ average income
$48,401

KY 40 is one of the more congested roads here: trips take 22% longer than at free-flow speed, against 13% county-wide.

4Paintsville RoadTrunk road · 7,870vehicles832trucks · 10.6%
Road class
Trunk road
Congestion ratio
10.3%
Median trip time
36.7 min
Drivers’ median age
49.0 yrs
Drivers’ average income
$47,101

On its busiest stretch, Paintsville Road carries 2.9 times the county average; trucks are 10.6% of it, above the county-wide 7.6%.

5US 460Trunk road · 7,668vehicles479trucks · 6.2%
Road class
Trunk road
Congestion ratio
10.6%
Median trip time
24.4 min
Drivers’ median age
49.4 yrs
Drivers’ average income
$43,407

US 460 peaks at 7,668 vehicles a day, 2.9 times the county average; trucks are 6.2% of it, below the county-wide 7.6%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1Paintsville RoadTrunk road · #4 by traffic7,870vehicles832trucks · 10.6%
2US 23Trunk road · #2 by traffic8,749vehicles745trucks · 8.5%
3Mayo TrailPrimary road · #1 by traffic12,396vehicles584trucks · 4.7%
4US 460Trunk road · #5 by traffic7,668vehicles479trucks · 6.2%
5KY 40Primary road · #3 by traffic8,170vehicles420trucks · 5.1%
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

JohnsonDepartment 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 Johnson County

The same traffic breakdown for the areas closest to Johnson County, Kentucky.

Need segment-level traffic data?

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