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 Jefferson County, Kentucky: 835 miles of roads shaded from blue (light) to red (heavy traffic), busiest on Henry Watterson Expressway

Jefferson County, Kentucky Traffic Counts

TrafficZoom tracks traffic on 835 road miles in Jefferson County, Kentucky, divided into 25,041 segments averaging 176 ft. It has the busiest roads of any county in Kentucky, averaging 14,083 vehicles a day. 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 Jefferson County, Kentucky

Traffic

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

vehicles per day14,083
Trucks

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

7.7%
Average travel time

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

32.5 min
Congestion ratio

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

30.1%
Drivers’ average age

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

46.0 yrs
Drivers’ average income

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

$88,544

A typical monitored road in Jefferson County, Kentucky sees 14,083 vehicles per day, while its 835 miles of monitored roads together handle 14,775,115 vehicle-miles traveled per day (≈5.4 billion per year). Trucks are a smaller part of the mix than across Kentucky: 7.7% against 12.1%.

The busiest roads of any county in Kentucky

At 14,083 vehicles per day, the average monitored road in Jefferson carries 200% more traffic than the state average of 4,696, suggesting more demand on each road - heavy exposure for roadside retail, and tight road space for deliveries. Network-wide, Jefferson accounts for about 12% of Kentucky's statewide total of vehicle-miles. Jefferson stands out as having the highest traffic volume in Kentucky - 14,083 vehicles per day.

The average trip takes 32.5 minutes, on par with the state level. 66% of counties in Kentucky have a shorter average travel time than Jefferson's 32.5 minutes.

Congestion runs 105% higher than the state level, at a ratio of 30.1%, which means more pronounced congestion - peak-hour routing and delivery windows need real slack here.

Highway vs. Non-Highway Traffic Analysis

highway traffic icon

Highway Traffic in Jefferson County, Kentucky

Trafficvehicles per day27,361
Trucks10.5%
Average travel time35.0 min
Congestion ratio46.6%
Drivers’ average age46.2 yrs
Drivers’ average income$90,141

A little more than half of the driving in Jefferson County, Kentucky happens on highways: 58% of all vehicle-miles. The average highway carries 27,361 vehicles per day, 113% more than the average non-highway road in the same area, which carries 12,872 vehicles per day.

Highways make up 33% of the monitored road miles (274 miles, 2,094 segments), so they carry more than their share: 8,512,783 vehicle-miles traveled per day (≈3.1 billion per year).

No county in Kentucky moves more traffic on its highways.

More highway trucks than 86% of counties in Kentucky

At 10.5%, highway truck share is 34% lower than the state average. Highways here mostly serve passenger trips, so local access matters more than long-haul routing for logistics operators.

By truck concentration, highways here trail 80% of counties in Kentucky. Jefferson's highway truck count is higher than 86% of counties in Kentucky, at roughly 2,867 trucks per day.

non-highway traffic icon

Non-highway Traffic in Jefferson County, Kentucky

Trafficvehicles per day12,872
Trucks3.9%
Average travel time32.3 min
Congestion ratio28.6%
Drivers’ average age45.9 yrs
Drivers’ average income$86,689

A significant share of driving in Jefferson County, Kentucky, 42% of vehicle-miles, happens on local roads. The average non-highway road carries 12,872 vehicles per day.

Spread over 561 miles and 22,947 segments, 67% of the road network, local roads carry a lighter load per mile: 6,262,332 vehicle-miles traveled per day (≈2.3 billion per year). The truck share on non-highway roads is 3.9%.

Local congestion 106% above the Kentucky average

The concentration of trucks on non-highway roads is 62% lower than on highways.

The non-highway congestion ratio of 28.6% is 106% higher than the state level, suggesting slower local mobility than the state average.

94% of counties in Kentucky see lower average driver income among trip origins than Jefferson. Jefferson's median driver age is lower than 84% of counties in Kentucky.

Time-of-Day & Seasonal Patterns

peak hours icon
Peak Traffic Windows
Weekday peaks:
AM peak 7:00 AM–8:00 AM and a long afternoon plateau from 12:00 PM to 7:00 PM, with volumes reaching approximately 63% higher than the daily average.
Weekend traffic:
Weekends are somewhat quieter: volumes run about 20% below weekday levels, the usual weekend dip.
seasonal traffic icon
Seasonal Fluctuation
Busy season:
Traffic is nearly flat through the year: even August–October, the busiest stretch, runs only +3% versus the annual average.
Lowest month:
January is the quietest month, with volumes -6% versus the annual average - the usual winter low.

Data Finding: Hourly & Seasonal Patterns

In Jefferson County, Kentucky, the peak hour concentrates about 7% of the day's traffic, and traffic stays steady through the year (+3% in high season).

Jefferson County vs. Kentucky Traffic Comparison

The average daily traffic per road sets Jefferson County apart: 200% above the Kentucky average. Its truck share, by contrast, is 36% below.

MetricJefferson CountyKentucky averageDifference
Traffic14,0834,696+199.9%
Truck % (Total Traffic)7.7%12.1%-36.0%
Truck % (Highway)10.5%15.9%-34.0%
Avg. Travel Time32.5 min31.7 min+2.7%

How Jefferson County compares

Jefferson County moves more traffic than any nearby county

Compared with its 4 closest neighbours, Jefferson County moves 7.2 times the total daily travel and carries 124.0% 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.

Jefferson 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
Jefferson County14,0837.7%14,775,11532.5 min30.1%
Floyd County, Indiana8,2167.9%1,537,60929.6 min23.5%
Oldham County, Kentucky5,32612.4%1,534,78025.5 min13.9%
Bullitt County, Kentucky5,30012.5%2,479,98027.8 min13.9%
Clark County, Indiana6,30911.6%2,682,14732.0 min17.7%
Kentucky average4,69612.1%N/A31.7 min14.7%

Jefferson County ranked within Kentucky

Average daily traffic volume and highway travel volume: on all 2, Jefferson County sits first in Kentucky.

Jefferson County ranked among 120 county-level areas in Kentucky (1 = highest); measures without data in every county rank a smaller field, down to 115.
MeasureJefferson CountyKentucky rank
Traffic volume (AADT)14,083#1 of 120
Highway vehicle-miles per day8,512,783#1 of 115
Truck share on highways10.5%#92 of 115
Highway trucks per day2,867#17 of 115
Average travel time32.5 min#42 of 120
Average driver income$88,544#8 of 120
Average driver age46.0 yrs#101 of 120

Jefferson County ranks #1 of 120 on average daily traffic volume but #101 of 120 on average driver age - the two describe the same roads and are worth reading together rather than either on its own.

Busiest roads in Jefferson County, Kentucky

On their busiest stretches, the three busiest roads in Jefferson County carry 80,836 vehicles a day on average, 5.7 times the typical road in the county (14,083).

Henry Watterson Expressway is the busiest road, at 94,575 vehicles a day, 7,704 of them trucks (8.2%). I 65 carries the most trucks, 10,550 a day (14.2% of its traffic), although it ranks #2 for all traffic.

Freight stands out on I 65 and I 71: trucks are 14.2% and 13.2% of the traffic there, against 7.7% county-wide.

Ranked by daily traffic (AADT)

Cars and light vehiclesTrucks
1Henry Watterson ExpresswayMotorway · 94,575vehicles7,704trucks · 8.2%
Road class
Motorway
Congestion ratio
63.8%
Median trip time
36.6 min
Drivers’ median age
46.4 yrs
Drivers’ average income
$86,079

Henry Watterson Expressway is one of the more congested roads here: trips take 64% longer than at free-flow speed, against 30% county-wide.

2I 65Motorway · 74,166vehicles10,550trucks · 14.2%
Road class
Motorway
Congestion ratio
59.2%
Median trip time
37.2 min
Drivers’ median age
45.5 yrs
Drivers’ average income
$74,095

I 65 carries 5.3 times the county average on its busiest stretch, where the median trip lasts 37.2 minutes.

3Kentucky TurnpikeMotorway · 73,766vehicles8,696trucks · 11.8%
Road class
Motorway
Congestion ratio
69.0%
Median trip time
37.7 min
Drivers’ median age
46.1 yrs
Drivers’ average income
$77,499

Delays build on Kentucky Turnpike: its congestion ratio of 69% over free-flow time is well above the county's 30%.

4I 64Motorway · 72,400vehicles7,556trucks · 10.4%
Road class
Motorway
Congestion ratio
58.4%
Median trip time
35.1 min
Drivers’ median age
46.6 yrs
Drivers’ average income
$97,991

At 5.1 times the county average, I 64 draws drivers from neighborhoods averaging $97,991 in household income.

5I 71Motorway · 59,613vehicles7,898trucks · 13.2%
Road class
Motorway
Congestion ratio
63.7%
Median trip time
35.4 min
Drivers’ median age
46.8 yrs
Drivers’ average income
$110,332

On its busiest stretch, I 71 carries 4.2 times the county average; trucks are 13.2% of it, above the county-wide 7.7%.

Ranked by trucks per day

Cars and light vehiclesTrucks
1I 65Motorway · #2 by traffic74,166vehicles10,550trucks · 14.2%
2Kentucky TurnpikeMotorway · #3 by traffic73,766vehicles8,696trucks · 11.8%
3I 71Motorway · #5 by traffic59,613vehicles7,898trucks · 13.2%
4Henry Watterson ExpresswayMotorway · #1 by traffic94,575vehicles7,704trucks · 8.2%
5I 64Motorway · #4 by traffic72,400vehicles7,556trucks · 10.4%
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

JeffersonDepartment 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 Jefferson County

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

Need segment-level traffic data?

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